import binascii def verify_seeprom(data): stored_crc = int.from_bytes(data[-2:], 'little') calc_crc = binascii.crc_hqx(data[:-2], 0xFFFF) return stored_crc == calc_crc
If you have a binary dump of the whole flash, parse the SEEPROM partition: otp.bin seeprom.bin
Users would follow complex guides to dump the OTP, but there was confusion about which size was needed. The standard OTP dump was 256 bytes, but a more complete dump (0x108) was 264 bytes and included additional data like the console's TWL (DS backwards compatibility) ID. import binascii def verify_seeprom(data): stored_crc = int