The BIOS and the chip are fine, there is only that one bit (CMP, bit 6) set in the second status register that makes the whole chip read-only. You can also use some external tools, like dediprog to clear the CMP bit and the BIOS should work again. The fix in step 8. does the same in software.
#467
The BIOS and the chip are fine, there is only that one bit (CMP, bit 6) set in the second status register that makes the whole chip read-only. You can also use some external tools, like dediprog to clear the CMP bit and the BIOS should work again. The fix in step 8. does the same in software.