Hi,
a possible problem could be signal integrity. That is: your wiring might
cause/catch to much noise (s. below).
Here some hints:
# For electrical issues:
Do read operation several times and check for equality.
Touch the cable/wires before starting a new read operation.
Just to check whether 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 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.).
https://www.flashrom.org/Board_Testing_HOWTO
Hope this helps,
Simon
Von: Guillaume Rallon <rallon.guilla...@gmail.com>
Gesendet: Freitag, 11. März 2022 11:27
An: flashrom@flashrom.org
Betreff: [flashrom] Help !
Hello,
I request your help for a little problem.
I try to unbrick my MSI Gaming 5 Z97 motherboard, using flashrom using a
raspberry Pi 4b vi the JSPI1 port.
I plugged it like this :
Hold 0V o o WP 3.3V
x o
o o GND
CLK o o CS
SI-SO o o SO-SI
o o VCC
The plugin seems to be good as Flashrom detects the chipset as a Winbond
W25Q64.V
The battery of the mother board is removed, no other external current source
plugged.
When I launch the writing sequence everything goes flawlessly and the problem
appears during the flash verification. I receive this message : Verifying
flash... FAILED at 0x00000014! Expected=0x03, Found=0x02, failed byte count
from 0x00000000-0x007fffff: 0x3d6c96
Your flash chip is in an unknown state.
I tried to put HOLD at 3.3V and let the CMOS battery but it is always the same
message.
Maybe my chipset has an internal defect ? If yes, I think I can buy a new chip
and solder it but it's a brutal solution ;)
I would really be pleased if you could give me at least a clue.
Best regards
Guillaume RALLON
The whole messages are below :
flashrom -p linux_spi:dev=/dev/spidev0.0,spispeed=512 -w
/home/Yogiadmin/flashrom/E7917IMS.190
flashrom v1.2-644-g79e2bd0 on Linux 5.10.92-v8+ (aarch64)
flashrom is free software, get the source code at https://flashrom.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found Winbond flash chip "W25Q64.V" (8192 kB, SPI) on linux_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... FAILED at 0x00000014! Expected=0x03, Found=0x02, failed byte
count from 0x00000000-0x007fffff: 0x3d6c96
Your flash chip is in an unknown state.
Please report this to the mailing list at
flashrom@flashrom.org<mailto:flashrom@flashrom.org> or
on IRC (see https://www.flashrom.org/Contact for details), thanks!
--
RALLON Guillaume
19 CHEMIN DE LA RETARDIERE
44700 ORVAULT
FRANCE
06 79 69 15 60
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