WiFi Module - Revision history

PoroCYon: Xtensa JTAG stuff (yeah)

2023-09-01T19:49:28Z

Xtensa JTAG stuff (yeah)

@@ Line 24: / Line 24: @@
 === DWM-W015 ===
-http://www.flickr.com/photos/micahdowty/3846960965/sizes/o/in/photostream/
+[http://www.flickr.com/photos/micahdowty/3846960965/sizes/o/in/photostream/ Image source]
 === DWM-W015A ===
@@ Line 35: / Line 37: @@
 [[Image:Dwm-w024.jpg|800px]]
 == Documents and external links ==

PoroCYon: /* Models */ fix link

2023-08-17T18:34:22Z

Models: fix link

← Older revision		Revision as of 22:34, 17 August 2023
Line 13:		Line 13:
	== Models ==		== Models ==

	The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros AR6002G BGA which share the antenna through an RF switch. It also features 1Mbit of SPI EEPROM ([[~~ST M45PE10\|~~Media:STM45PE10.pdf]]) for NVRAM. It has enough space to store a full copy of the old DS firmware.		The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros AR6002G BGA which share the antenna through an RF switch. It also features 1Mbit of SPI EEPROM ([[Media:STM45PE10.pdf\|ST M45PE10]]) for NVRAM. It has enough space to store a full copy of the old DS firmware.

	The updated DWM-W015A module uses a tiny "5A32" chip as NVRAM (UDFN/XSON, as opposed to the SOIC-sized chip in the older revision). Only the first and last few memory blocks are actually backed by a nonvolatile memory, other addresses return garbage.		The updated DWM-W015A module uses a tiny "5A32" chip as NVRAM (UDFN/XSON, as opposed to the SOIC-sized chip in the older revision). Only the first and last few memory blocks are actually backed by a nonvolatile memory, other addresses return garbage.

PoroCYon: /* DWM-W024 */ fix image preview to have a reasonable size

2023-08-17T18:25:19Z

DWM-W024: fix image preview to have a reasonable size

← Older revision		Revision as of 22:25, 17 August 2023
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	=== DWM-W024 ===		=== DWM-W024 ===

	[[Image:Dwm-w024.jpg]]		[[Image:Dwm-w024.jpg\|800px]]

	== Documents and external links ==		== Documents and external links ==

PoroCYon: fix mention/introduction of NVRAM

2023-08-17T18:21:45Z

fix mention/introduction of NVRAM

← Older revision		Revision as of 22:21, 17 August 2023
Line 3:		Line 3:
	There appear to be 3 WiFi modules at use in the DSi. These implement both the "old" WiFi chip (MM3315/MM3218) for DS-mode backwards compatibility, as well as a new Atheros 6k-based WiFi chip. The DS WiFi is configured through profiles 1-3 and is limited to 802.11b 1-2Mbps and WEP encryption while the Atheros supports 802.11g rates and WPA encryption, configured through profiles 4-6.		There appear to be 3 WiFi modules at use in the DSi. These implement both the "old" WiFi chip (MM3315/MM3218) for DS-mode backwards compatibility, as well as a new Atheros 6k-based WiFi chip. The DS WiFi is configured through profiles 1-3 and is limited to 802.11b 1-2Mbps and WEP encryption while the Atheros supports 802.11g rates and WPA encryption, configured through profiles 4-6.

	The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Newer revisions of this board have a SPI EEPROM that has no backing memory for most of the 1Mbit address space (presumably as cost savings?). Thus, older modules can be used for installing the "dslink" WiFi loader (to be launched in DSi mode via save-game hacks in DSi hybrid games), while newer modules require a hardmod (chip replacement) to achieve this (as demonstrated by khmann, using an ST M34PE20 chip as replacement). All revisions of the module have footprints for both large and small NVRAM chip, and the change to the limited chip occurred prior to the release of the dslink exploit.		Next to the WiFi chips, these modules also carry the [[NVRAM]] chip. The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Newer revisions of this board have a SPI EEPROM that has no backing memory for most of the 1Mbit address space (presumably as cost savings?). Thus, older modules can be used for installing the "dslink" WiFi loader (to be launched in DSi mode via save-game hacks in DSi hybrid games), while newer modules require a hardmod (chip replacement) to achieve this (as demonstrated by khmann, using an ST M34PE20 chip as replacement). All revisions of the module have footprints for both large and small NVRAM chip, and the change to the limited chip occurred prior to the release of the dslink exploit.

	The Mitsumi WiFi is controlled through data in the NVRAM (eg: [https://problemkaputt.de/gbatek-ds-firmware-wifi-calibration-data.htm calibration data, allowed channels]), while the Atheros configuration is stored in the other tiny IC on the board, an I2C EEPROM.		The Mitsumi WiFi is controlled through data in the NVRAM (eg: [https://problemkaputt.de/gbatek-ds-firmware-wifi-calibration-data.htm calibration data, allowed channels]), while the Atheros configuration is stored in the other tiny IC on the board, an I2C EEPROM.
Line 13:		Line 13:
	== Models ==		== Models ==

	The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros AR6002G BGA which share the antenna through an RF switch. It also features 1Mbit of SPI EEPROM ([[ST M45PE10\|Media:STM45PE10.pdf]]) for [[NVRAM]]. It has enough space to store a full copy of the old DS firmware.		The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros AR6002G BGA which share the antenna through an RF switch. It also features 1Mbit of SPI EEPROM ([[ST M45PE10\|Media:STM45PE10.pdf]]) for NVRAM. It has enough space to store a full copy of the old DS firmware.

	The updated DWM-W015A module uses a tiny "5A32" chip as NVRAM (UDFN/XSON, as opposed to the SOIC-sized chip in the older revision). Only the first and last few memory blocks are actually backed by a nonvolatile memory, other addresses return garbage.		The updated DWM-W015A module uses a tiny "5A32" chip as NVRAM (UDFN/XSON, as opposed to the SOIC-sized chip in the older revision). Only the first and last few memory blocks are actually backed by a nonvolatile memory, other addresses return garbage.

PoroCYon: clean up the article (wow it was a mess)

2023-08-17T18:19:48Z

clean up the article (wow it was a mess)

← Older revision		Revision as of 22:19, 17 August 2023
Line 1:		Line 1:
	~~There appear to be 3 WiFi modules at use in the DSi.~~		== Introduction ==

	~~The original~~ DSi ~~DWM-W015 module features two wireless chips; a Mitsumi~~ MM3218 for DS compatibility ~~and~~ a ~~more modern~~ Atheros ~~[https://problemkaputt.de/gbatek-dsi-atheros-wifi-internal~~-~~hardware.htm AR6002G] BGA which share the antenna through an RF switch~~. The DS WiFi is configured through profiles 1-3 and is limited to 802.11b 1-2Mbps and WEP encryption while the Atheros supports 802.11g rates and WPA encryption, configured through profiles 4-6.		There appear to be 3 WiFi modules at use in the DSi. These implement both the "old" WiFi chip (MM3315/MM3218) for DS-mode backwards compatibility, as well as a new Atheros 6k-based WiFi chip. The DS WiFi is configured through profiles 1-3 and is limited to 802.11b 1-2Mbps and WEP encryption while the Atheros supports 802.11g rates and WPA encryption, configured through profiles 4-6.

	~~http~~://~~www~~.~~flickr~~.~~com/photos/micahdowty/3846960965/sizes/o~~/in/~~photostream/~~		The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Newer revisions of this board have a SPI EEPROM that has no backing memory for most of the 1Mbit address space (presumably as cost savings?). Thus, older modules can be used for installing the "dslink" WiFi loader (to be launched in DSi mode via save-game hacks in DSi hybrid games), while newer modules require a hardmod (chip replacement) to achieve this (as demonstrated by khmann, using an ST M34PE20 chip as replacement). All revisions of the module have footprints for both large and small NVRAM chip, and the change to the limited chip occurred prior to the release of the dslink exploit.

			The Mitsumi WiFi is controlled through data in the NVRAM (eg: [https://problemkaputt.de/gbatek-ds-firmware-wifi-calibration-data.htm calibration data, allowed channels]), while the Atheros configuration is stored in the other tiny IC on the board, an I2C EEPROM.

			The pinout of the connector can be found in FCC documents (see below). This connector includes pins for JTAG access to the Xtensa core in the Atheros chip (using 3.3V signals, though the 1.8V rail needs to be supplied from an external source as well). It presumably uses the same debug interface as found in the ESP8266 and ESP32 chips (which also use Xtensa CPUs), though no reports of people attempting to connect to it have been found at the time of writing.

			If this module is disconnected the DSi turns on to a black screen, because it can't read the NVRAM. If the DSi doesn't like the data contained on the module it will give either error 0000FEFE or 0000FE00 at poweron. See [[stage1]] for more information.

			== Models ==

			The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros AR6002G BGA which share the antenna through an RF switch. It also features 1Mbit of SPI EEPROM ([[ST M45PE10\|Media:STM45PE10.pdf]]) for [[NVRAM]]. It has enough space to store a full copy of the old DS firmware.

			The updated DWM-W015A module uses a tiny "5A32" chip as NVRAM (UDFN/XSON, as opposed to the SOIC-sized chip in the older revision). Only the first and last few memory blocks are actually backed by a nonvolatile memory, other addresses return garbage.

			The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip, the Atheros-native I2C configuration.
			For reference, the 3DS DWM-W028 module is reported to use an Atheros AR6014G-AL1C. The connector pinout is unchanged. These AR601x chips contain the combined functionality of both the AR6002 and MM3218 chips found on the DWM-W015.

	~~Rev0 of this module includes a 1Mbit SPI flash ST M45PE10 [[Media:STM45PE10.pdf]] for NVRAM~~		== Photos ==

	~~[[Image:~~DWM-~~W015a.jpg]]~~		=== DWM-W015 ===

	~~Updated (RevA) modules use a very tiny custom chip labeled 5A32 for NVRAM storage~~.		http://www.flickr.com/photos/micahdowty/3846960965/sizes/o/in/photostream/
	~~Note the circle~~ in this image shows a 10k resistor from pin 5 WP to GND, which the ST M45PE10 datasheet indicates will write-protect the first 64K. To disable this protection according to the SPI datasheet, remove the resistor and solder pin 5 to pin 6 VCC.

	The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Modules with SPI flash can be written to in DS mode, which enables the installation of WiFi loader "dslink" which can then be launched in DSi mode via save-game hacks in DSi hybrid games. Newer modules with the 5A32 chip are incompatible with this, most likely because the custom chip has significantly less storage. khmann had success backing up the data in a 5A32 using an SPI connection to a DS cartridge, removing the 5A32 and installing a pre-programmed ST M45PE20 2Mbit SPI flash chip which enabled use of the this exploit on a newer console.		=== DWM-W015A ===

	~~Nintendo's reasons for changing the NVRAM chip are unclear (cost savings?), but it seems all~~ DWM-~~W015 and DWM-W024 modules have connections for both types of chips, and the change to the limited chip occurred prior to the release of the dslink exploit~~.		[[Image:DWM-W015a.jpg]]

	~~The Mitsumi WiFi is controlled through data~~ in the ~~NVRAM (eg: [https://problemkaputt.de/gbatek~~-~~ds-firmware-wifi-calibration-data~~.~~htm calibration data, allowed channels])~~, ~~while~~ the ~~Atheros configuration is stored in the other tiny IC on the board, an I2C EEPROM~~.		Note the circle in this image shows a 10k resistor from pin 5 WP to GND, which the ST M45PE10 datasheet indicates will write-protect the first 64K. To disable this protection according to the SPI datasheet, remove the resistor and solder pin 5 to pin 6 VCC.

	~~The pinout of the connector can be found in [https://fccid.io/EW4DWMW015/Label/Label~~-~~Location-1031953.pdf FCC documents].~~		=== DWM-W024 ===

	[[Image:Dwm-w024.jpg]]		[[Image:Dwm-w024.jpg]]

	~~The DSiXL or DSi/LL module is labeled DWM-W024,~~ and ~~includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip, the Atheros-native I2C configuration.~~		== Documents and external links ==
	~~For reference, the 3DS DWM-W028 module is reported to use an Atheros AR6014G-AL1C. The connector pinout is [https://fccid.io/EW4DWMW024/Label/Label-format-and-location-1137926.pdf unchanged].~~

	~~If this module is disconnected~~ the ~~DSi turns on to a black screen, because it can't read~~ the ~~NVRAM~~. ~~If the DSi doesn't like the data contained on the module it will give either error 0000FEFE or 0000FE00 at poweron~~. ~~See~~ [[~~stage1~~]] ~~for more~~ information.		* [https://fccid.io/EW4DWMW015/Label/Label-Location-1031953.pdf FCC "label location"] document of the DWM-W015 (includes pinout)
			* [https://fccid.io/EW4DWMW024/Label/Label-format-and-location-1137926.pdf FCC "label location"] document of the DWM-W024 (includes pinout)
			* [[File:3002_Datasheet.pdf]] MM3315 aka RF3002 datasheet (old DS WiFi baseband chip)
			* [[File:9008-pk020_Rev(B).pdf]] RF9008 datasheet (old DS WiFi RF chip)
			* [[File:AR6002_Atheros.pdf.zip]] AR6002 datasheet (zipped to circumvent wiki upload size limits)
			* [https://problemkaputt.de/gbatek-dsi-atheros-wifi-internal-hardware.htm GBATEK's information on the AR6002].
			* [https://problemkaputt.de/gbatek-aux-dsi-chipset-pinouts.htm MM3218 and AR60xx chip pinouts on GBATEK]

PoroCYon at 18:02, 18 December 2022

2022-12-18T17:02:46Z

Khmann: added dwm-w024 image

2012-10-09T17:45:05Z

added dwm-w024 image

← Older revision		Revision as of 21:45, 9 October 2012
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	The Mitsumi WiFi is controlled through data in the NVRAM (eg: calibration data, allowed channels) http://www.daftcode.net/gbatek/ds#dsfirmwarewificalibrationdata while the Atheros configuration is likely stored in the other tiny IC on the board, an i2c eeprom.		The Mitsumi WiFi is controlled through data in the NVRAM (eg: calibration data, allowed channels) http://www.daftcode.net/gbatek/ds#dsfirmwarewificalibrationdata while the Atheros configuration is likely stored in the other tiny IC on the board, an i2c eeprom.


			[[Image:Dwm-w024.jpg]]

	The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip likely to be the Atheros-native i2c configuration.		The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip likely to be the Atheros-native i2c configuration.

Khmann at 19:40, 24 September 2012

2012-09-24T17:40:47Z

← Older revision		Revision as of 21:40, 24 September 2012
Line 13:		Line 13:
	The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Modules with SPI flash can be written to in DS mode, which enables the installation of WiFi loader "dslink" which can then be launched in DSi mode via save-game hacks in DSi hybrid games. Newer modules with the 5A32 chip are incompatible with this, most likely because the custom chip has significantly less storage. khmann had success backing up the data in a 5A32 using an SPI connection to a DS cartridge, removing the 5A32 and installing a pre-programmed ST M45PE20 2Mbit SPI flash chip which enabled use of the this exploit on a newer console.		The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Modules with SPI flash can be written to in DS mode, which enables the installation of WiFi loader "dslink" which can then be launched in DSi mode via save-game hacks in DSi hybrid games. Newer modules with the 5A32 chip are incompatible with this, most likely because the custom chip has significantly less storage. khmann had success backing up the data in a 5A32 using an SPI connection to a DS cartridge, removing the 5A32 and installing a pre-programmed ST M45PE20 2Mbit SPI flash chip which enabled use of the this exploit on a newer console.

	Nintendo's reasons for changing the NVRAM chip are unclear, but it seems all DWM-W015 and DWM-~~W028~~ modules have connections for both types of chips, and the change to the limited chip occurred prior to the release of the dslink exploit.		Nintendo's reasons for changing the NVRAM chip are unclear, but it seems all DWM-W015 and DWM-W024 modules have connections for both types of chips, and the change to the limited chip occurred prior to the release of the dslink exploit.

	The Mitsumi WiFi is controlled through data in the NVRAM (eg: calibration data, allowed channels) http://www.daftcode.net/gbatek/ds#dsfirmwarewificalibrationdata while the Atheros configuration is likely stored in the other tiny IC on the board, an i2c eeprom.		The Mitsumi WiFi is controlled through data in the NVRAM (eg: calibration data, allowed channels) http://www.daftcode.net/gbatek/ds#dsfirmwarewificalibrationdata while the Atheros configuration is likely stored in the other tiny IC on the board, an i2c eeprom.
Line 19:		Line 19:

	The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip likely to be the Atheros-native i2c configuration.		The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip likely to be the Atheros-native i2c configuration.
	For reference, the 3DS is reported to use an Atheros AR6014G-AL1C.		For reference, the 3DS DWM-W028 module is reported to use an Atheros AR6014G-AL1C.


	If this module is disconnected the DSi turns on to a black screen, because it can't read the NVRAM. If the DSi doesn't like the data contained on the module it will give either error 0000FEFE or 0000FE00 at poweron.		If this module is disconnected the DSi turns on to a black screen, because it can't read the NVRAM. If the DSi doesn't like the data contained on the module it will give either error 0000FEFE or 0000FE00 at poweron.

Khmann at 19:39, 24 September 2012

2012-09-24T17:39:52Z

← Older revision		Revision as of 21:39, 24 September 2012
Line 13:		Line 13:
	The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Modules with SPI flash can be written to in DS mode, which enables the installation of WiFi loader "dslink" which can then be launched in DSi mode via save-game hacks in DSi hybrid games. Newer modules with the 5A32 chip are incompatible with this, most likely because the custom chip has significantly less storage. khmann had success backing up the data in a 5A32 using an SPI connection to a DS cartridge, removing the 5A32 and installing a pre-programmed ST M45PE20 2Mbit SPI flash chip which enabled use of the this exploit on a newer console.		The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Modules with SPI flash can be written to in DS mode, which enables the installation of WiFi loader "dslink" which can then be launched in DSi mode via save-game hacks in DSi hybrid games. Newer modules with the 5A32 chip are incompatible with this, most likely because the custom chip has significantly less storage. khmann had success backing up the data in a 5A32 using an SPI connection to a DS cartridge, removing the 5A32 and installing a pre-programmed ST M45PE20 2Mbit SPI flash chip which enabled use of the this exploit on a newer console.

	Nintendo's reasons for changing the NVRAM chip are unclear, but it seems all DWM-W015 have connections for both types of chips and the change to the limited chip occurred prior to the release of the dslink exploit.		Nintendo's reasons for changing the NVRAM chip are unclear, but it seems all DWM-W015 and DWM-W028 modules have connections for both types of chips, and the change to the limited chip occurred prior to the release of the dslink exploit.

	The Mitsumi WiFi is controlled through data in the NVRAM (eg: calibration data, allowed channels) http://www.daftcode.net/gbatek/ds#dsfirmwarewificalibrationdata while the Atheros configuration is likely stored in the other tiny IC on the board, an i2c eeprom.		The Mitsumi WiFi is controlled through data in the NVRAM (eg: calibration data, allowed channels) http://www.daftcode.net/gbatek/ds#dsfirmwarewificalibrationdata while the Atheros configuration is likely stored in the other tiny IC on the board, an i2c eeprom.
Line 19:		Line 19:

	The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip likely to be the Atheros-native i2c configuration.		The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip likely to be the Atheros-native i2c configuration.
			For reference, the 3DS is reported to use an Atheros AR6014G-AL1C.


	If this module is disconnected the DSi turns on to a black screen, because it can't read the NVRAM. If the DSi doesn't like the data contained on the module it will give either error 0000FEFE or 0000FE00 at poweron.		If this module is disconnected the DSi turns on to a black screen, because it can't read the NVRAM. If the DSi doesn't like the data contained on the module it will give either error 0000FEFE or 0000FE00 at poweron.

Khmann at 19:38, 24 September 2012

2012-09-24T17:38:19Z

← Older revision		Revision as of 21:38, 24 September 2012
Line 7:		Line 7:

	[[Image:DWM-W015a.jpg]]		[[Image:DWM-W015a.jpg]]

	Updated (RevA) modules use a very tiny custom chip labeled 5A32 for NVRAM storage.		Updated (RevA) modules use a very tiny custom chip labeled 5A32 for NVRAM storage.
	Note the circle in this image shows a 10k resistor from pin 5 WP to GND, which the ST M45PE10 datasheet indicates will write-protect the first 64K. To disable this protection according to the SPI datasheet, remove the resistor and solder pin 5 to pin 6 VCC.		Note the circle in this image shows a 10k resistor from pin 5 WP to GND, which the ST M45PE10 datasheet indicates will write-protect the first 64K. To disable this protection according to the SPI datasheet, remove the resistor and solder pin 5 to pin 6 VCC.

← Older revision		Revision as of 20:02, 18 December 2022
Line 1:		Line 1:
	There appear to be 3 WiFi modules at use in the DSi.		There appear to be 3 WiFi modules at use in the DSi.

	The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros AR6002G BGA which share the antenna through an RF switch. The DS WiFi is configured through profiles 1-3 and is limited to 802.11b 1-2Mbps and WEP encryption while the Atheros supports 802.11g rates and WPA encryption, configured through profiles 4-6.		The original DSi DWM-W015 module features two wireless chips; a Mitsumi MM3218 for DS compatibility and a more modern Atheros [https://problemkaputt.de/gbatek-dsi-atheros-wifi-internal-hardware.htm AR6002G] BGA which share the antenna through an RF switch. The DS WiFi is configured through profiles 1-3 and is limited to 802.11b 1-2Mbps and WEP encryption while the Atheros supports 802.11g rates and WPA encryption, configured through profiles 4-6.

	http://www.flickr.com/photos/micahdowty/3846960965/sizes/o/in/photostream/		http://www.flickr.com/photos/micahdowty/3846960965/sizes/o/in/photostream/

	Rev0 of this module includes a 1Mbit SPI flash ST M45PE10 [[Media:STM45PE10.pdf]] for NVRAM		Rev0 of this module includes a 1Mbit SPI flash ST M45PE10 [[Media:STM45PE10.pdf]] for NVRAM

Line 13:		Line 14:
	The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Modules with SPI flash can be written to in DS mode, which enables the installation of WiFi loader "dslink" which can then be launched in DSi mode via save-game hacks in DSi hybrid games. Newer modules with the 5A32 chip are incompatible with this, most likely because the custom chip has significantly less storage. khmann had success backing up the data in a 5A32 using an SPI connection to a DS cartridge, removing the 5A32 and installing a pre-programmed ST M45PE20 2Mbit SPI flash chip which enabled use of the this exploit on a newer console.		The DSi only uses a tiny portion of the 128KB available for startup data, calibration, and user settings. Modules with SPI flash can be written to in DS mode, which enables the installation of WiFi loader "dslink" which can then be launched in DSi mode via save-game hacks in DSi hybrid games. Newer modules with the 5A32 chip are incompatible with this, most likely because the custom chip has significantly less storage. khmann had success backing up the data in a 5A32 using an SPI connection to a DS cartridge, removing the 5A32 and installing a pre-programmed ST M45PE20 2Mbit SPI flash chip which enabled use of the this exploit on a newer console.

	Nintendo's reasons for changing the NVRAM chip are unclear, but it seems all DWM-W015 and DWM-W024 modules have connections for both types of chips, and the change to the limited chip occurred prior to the release of the dslink exploit.		Nintendo's reasons for changing the NVRAM chip are unclear (cost savings?), but it seems all DWM-W015 and DWM-W024 modules have connections for both types of chips, and the change to the limited chip occurred prior to the release of the dslink exploit.

	The Mitsumi WiFi is controlled through data in the NVRAM (eg: ~~calibration data, allowed channels) http~~://~~www.daftcode~~.~~net~~/gbatek/ds~~#dsfirmwarewificalibrationdata~~ while the Atheros configuration is ~~likely~~ stored in the other tiny IC on the board, an ~~i2c eeprom~~.		The Mitsumi WiFi is controlled through data in the NVRAM (eg: [https://problemkaputt.de/gbatek-ds-firmware-wifi-calibration-data.htm calibration data, allowed channels]), while the Atheros configuration is stored in the other tiny IC on the board, an I2C EEPROM.

			The pinout of the connector can be found in [https://fccid.io/EW4DWMW015/Label/Label-Location-1031953.pdf FCC documents].

	[[Image:Dwm-w024.jpg]]		[[Image:Dwm-w024.jpg]]

	The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip ~~likely to be~~ the Atheros-native ~~i2c~~ configuration.		The DSiXL or DSi/LL module is labeled DWM-W024, and includes only an Atheros AR6013G-AL1C, a 5A32 variant, empty SPI flash pads, and another small chip, the Atheros-native I2C configuration.
	For reference, the 3DS DWM-W028 module is reported to use an Atheros AR6014G-AL1C.		For reference, the 3DS DWM-W028 module is reported to use an Atheros AR6014G-AL1C. The connector pinout is [https://fccid.io/EW4DWMW024/Label/Label-format-and-location-1137926.pdf unchanged].


	If this module is disconnected the DSi turns on to a black screen, because it can't read the NVRAM. If the DSi doesn't like the data contained on the module it will give either error 0000FEFE or 0000FE00 at poweron.		If this module is disconnected the DSi turns on to a black screen, because it can't read the NVRAM. If the DSi doesn't like the data contained on the module it will give either error 0000FEFE or 0000FE00 at poweron. See [[stage1]] for more information.