'''nand:/sys/HWINFO_S.dat''' seems to be the ''secure'' version of [[Nand/sys/HWINFO_N.dat]]. It contains an RSA signature for verifying that this file was issued by Nintendo, but it does not appear to be verified by [[stage2]].
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'''nand:/sys/HWINFO_S.dat''' is a file used by [[stage2]] to boot. It contains an RSA signature for verifying that this file was issued by Nintendo. The RSA header is similar to [[nand:/shared1/TWLCFG0.dat]] and [[nand:/sys/HWINFO_N.dat]].