For a 0x80 byte eeprom block:
CS2 @ 0x7c = CRC32 of 0x8->0x77 (init with word @ 0x78)
CS1 @ 0x02 = lower short of CRC32 of 0x4->0x7f (init with short @ 0x0)

CS2 first, then CS1.
Immo block IDs = 0x8, 0x9, 0xa
Crc poly = 0xEDB88320
All little endian.

Good afternoon, I saw here that you know how to calculate the CS1 and CS2 of eprom, would you like to learn how to teach? I can pay for you to teach me. do you have skyper or whatsapp? it's better to talk

1D 00 7E 4E 76 28 00 00 8C 80 E5 C8 3F 0A 2A F3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 4C 58 56 4A 32 47 46 43 35 47 41 30 33 31 35 31 33 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3C 00 09 00 FF 00 0C 00 45 01 B4 FF FE 00 D2 FF E9 00 50 FF 7D 00 50 FF 7D 00 43 FF 4C 00 5F FF 46 00 63 FF 5D 00 00 00 00 00 00 00 BC 23 09 06 00 00 00 00 00 00 00 00 C6 02 41 0D 1E 00 7D 67 45 28 00 00 BC 01 00 00 00 00 41 0E 50 15 07 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 6D 25 00 00 53 4C A0 D5 76 28 00 00            I've figured out the calculation methods for Cs1 and Cs2. Could you please inform me about the calculation method for Cs3-53 4C A0 D5? Thank you!