Perhaps you're having the connection quality problems, make sure that your wires are short enough etc. Also, regarding " when checking to see if the checksum of the reads I do are identical, they always come up as different values. " - to slightly clarify this situation you could try doing " xxd ./dump1.bin > ./dump1.txt ", " xxd ./dump2.bin > ./dump2.txt " and then compare these dumps with some diff utility to see if there's any pattern at the read errors.
On Fri, Jan 8, 2021 at 1:34 AM Andrew Warhol via flashrom <flashrom@flashrom.org> wrote: > > Hello, I was wondering if anyone would mind helping me with an issue I'm > running into with flashrom on a dell xps 15 9550. The dell has a 16 mbyte > Winbond W25Q128.V bios chip on it. I'm using flash rom on a raspberry pi 4 > but when I read this chip with a soic8 test clip, it seems to read > successfully. However, when checking to see if the checksum of the reads I do > are identical, they always come up as different values. The other two bios > chips however read with the same checksums every time. I am attempting to use > intel me cleaner to set the hap bit and disable intel me without > repartitioning or cleaning anything on the chip as intel boot guard is > enabled. ME Cleaner is able to read the file and say the hap bit has been > successfully set. However, when writing the modified image, I get the error > through flash rom verifying flash...failed, your flash chip is in an unknown > state. The laptop will no longer boot and the power light comes on for a > moment before turning on. I suspect eith er flash rom is not compatible with this chip or something about this chip prevents it from being read by flash rom. Using this guide: darajnish/dell5577medisable it seems as though a select few people have been able to set the hap bit by using the command soft-disable-only. Even when I try re-flashing the original read bios image however, the laptop still does not boot. I read somewhere that my chip has flash descriptors locked, but since other people have had success I'm not sure why I can't get it to work properly. Any advice would be much appreciated! > _______________________________________________ > flashrom mailing list -- flashrom@flashrom.org > To unsubscribe send an email to flashrom-le...@flashrom.org _______________________________________________ flashrom mailing list -- flashrom@flashrom.org To unsubscribe send an email to flashrom-le...@flashrom.org
