If you read the chip, erase it, reprogram it, and then immediately read back a different checksum, and you’ve ruled out all electrical issues—the chip is dying. Replace it.
If the chip is still on the motherboard, ensure it is firmly connected and that the motherboard's CMOS battery is removed to prevent interference. 2. Improper Erase or Blank Check If you read the chip, erase it, reprogram
: If flashing the chip while it is still soldered to the motherboard, other components (like the CMOS battery or nearby resistors) can drain voltage or cause signal noise. Software Version Conflicts If you read the chip