Problem with size .rom HP chromebook 11 g6 ee - Unbricking

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1

If I try unbricking chromebook via CH341a programmer and I wrote this:

sudo flashrom -p ch341a_spi -w coreboot_edk2-snappy-mrchromebox_20240416.rom

I recive

flashrom unknown on Linux 6.6.15-amd64 (x86_64)
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 “W25Q40EW” (512 kB, SPI) on ch341a_spi.
===
This flash part has status UNTESTED for operations: WP
The test status of this chip may have been updated in the latest development
version of flashrom. If you are running the latest development version,
please email a report to [email protected] if any of the above operations
work correctly for you with this flash chip. Please include the flashrom log
file for all operations you tested (see the man page for details), and mention
which mainboard or programmer you tested in the subject line.
Thanks for your help!
Error: Image size (16777216 B) doesn’t match the expected size (524288 B)!

I receive it as well if I try:

sudo flashrom -p ch341a_spi -n -w coreboot_edk2-snappy-mrchromebox_20240416.rom

The motherboard is snappy. I am sure this is BIOS’ chip. Is it possible part of the firmware is on eMMc memory?

2

Wrong chip, you’re on the EC chip instead of the AP chip. Hint: It’s right next to it and its a WSON chip. Should be something like 25Q128FW

3

Thank you for clarifying that for me.
I see it next to but here isn’t output like EC chip and I can’t pin it. There is a way without solder? I tried without 1.8 V adapter too, but the same problem:

flashrom unknown on Linux 6.6.15-amd64 (x86_64)
flashrom is free software, get the source code at https://flashrom.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
No EEPROM/flash device found.
Note: flashrom can never write if the flash chip isn’t found automatically.

4

You need a pogo pin adapter for WSON chips if you don’t want to desolder the chip. I’m pretty sure it’s 1.8v so definitely confirm before you try without it.

https://www.aliexpress.us/item/3256801644532228.html?gatewayAdapt=glo2usa4itemAdapt

(You need the wson 6x5 adapter)