here just some general information/advice:


Use the latest flashrom version (current version 1.2: https://www.flashrom.org/Flashrom/1.2 )


For chip handling issues:



For electrical issues:

Do read operation several times and check for equality.

                Touch the cable/wires before starting a new read operation in order to find out if the contacts are good.

If all reads give you the same file there shouldn´t be any problem at electrical level.

If you get diffs between the files you have an electrical problem -> check contacts, use as short cables/wires as possible and try a lower frequency (if programmer supports this; do not overvalue the impact of frequency on total programming time, for some programmers most of the time is lost on other stages like usb communication etc. ). Check again with several read runs.







Von: Nikos Mouzakitis <mzktsn@gmail.com>
Gesendet: Dienstag, 19. Mai 2020 13:33
An: flashrom@flashrom.org
Betreff: [flashrom] Is this an Error? Problem flashng.


Hello this is my output when trying to flash..


Does Incomplete/failed Command Receive Device string plays a role on

the error of verification?

I cannot flash back the original bios contents at the moment on my board.


flashrom v0.9.9-r1954 on Linux 4.15.0-88-generic (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Calibrating delay loop... OK.
Setting voltage to 1800 mV
Incomplete/failed Command Receive Device String!
Found Winbond flash chip "W25Q64.V" (8192 kB, SPI) on dediprog.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... FAILED at 0x00000010! Expected=0x5a, Found=0xff, failed byte count from 0x00000000-0x007fffff: 0x2ddb74
Your flash chip is in an unknown state.
Please report this on IRC at chat.freenode.net (channel #flashrom) or
mail flashrom@flashrom.org, thanks!