failed flashing ROM on a Dell E7270

[Richard Horsch]

Dear all,

I miss-flashed my BIOS on a Dell Latitude E7270 somehow.
So I tried to reflash the chip with flashrom, but it faild.

I was asked to report this to you.
The terminal tells me following:

"
flashrom v1.2 on Linux 5.4.0-52-generic (x86_64)
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found GigaDevice flash chip "GD25Q127C/GD25Q128C" (16384 kB, SPI) on 
ch341a_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... FAILED at 0x00f5d000! Expected=0xff, 
Found=0x40, failed byte count from 0x00f5d000-0x00f5dfff: 0x1000
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase 
function.
FAILED at 0x00000010! Expected=0xff, Found=0x00, failed byte count from 
0x00000000-0x00007fff: 0x4732
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase 
function.
Erase/write done.
Verifying flash... FAILED at 0x0008b500! Expected=0xda, Found=0xff, 
failed byte count from 0x00000000-0x00ffffff: 0xf0137
Your flash chip is in an unknown state.
Please report this on IRC at chat.freenode.net (channel #flashrom) or
mail [e-mail], thanks!
"

Is there anything, what could be done further?
Thanks and kind regards,

Richard

[Buhrow, Simon]

Hi Richard,

just some generic advices (may be someone else has better ones for your specific hardware set):

For chip handling issues:
https://www.flashrom.org/Board_Testing_HOWTO

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 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.).

Good luck and feel free to put further questions,

Simon

-----Ursprüngliche Nachricht-----
Von: Richard Horsch  
Gesendet: Montag, 9. November 2020 20:42
An: [e-mail]
Betreff: [flashrom] failed flashing ROM on a Dell E7270

Dear all,

I miss-flashed my BIOS on a Dell Latitude E7270 somehow.
So I tried to reflash the chip with flashrom, but it faild.

I was asked to report this to you.
The terminal tells me following:

"
flashrom v1.2 on Linux 5.4.0-52-generic (x86_64) Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found GigaDevice flash chip "GD25Q127C/GD25Q128C" (16384 kB, SPI) on ch341a_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... FAILED at 0x00f5d000! Expected=0xff, Found=0x40, failed byte count from 0x00f5d000-0x00f5dfff: 0x1000 ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase function.
FAILED at 0x00000010! Expected=0xff, Found=0x00, failed byte count from
0x00000000-0x00007fff: 0x4732
ERASE FAILED!
Reading current flash chip contents... done. Looking for another erase function.
Erase/write done.
Verifying flash... FAILED at 0x0008b500! Expected=0xda, Found=0xff, failed byte count from 0x00000000-0x00ffffff: 0xf0137 Your flash chip is in an unknown state.
Please report this on IRC at chat.freenode.net (channel #flashrom) or mail [e-mail], thanks!
"

Is there anything, what could be done further?
Thanks and kind regards,

Richard

Tel.: [phone]
Mob.: [phone]
Fax.: [phone]
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