Non-existant? Thinkpad L470 corrupt bios

[heartbreakhotel]

Hello friends, I have searched the internet to the last pages on google, and I can't seem to find any information regarding a BIOS recovery for my Thinkpad L470, I was unknowingly updating the BIOS via windows and shut down the laptop.

I need to know if there is a BIOS recovery method that I can use to restore this thing, when you press the power button its just a black screen, not even the backlight turns on.



This is pretty much all info I have regarding the laptop model/serial number etc...

[mon2]

I believe you will have to use an external programmer to remove the original bios chip -> reflash it and solder it back on to fix this case. Best to post the same question in the dedicated bios forum.

[heartbreakhotel]

Could you confirm if something like this would do the trick?

https://www.takealot.com/eeprom-flas...t/PLID90431302

will probably only use it once so I don't want to buy the wrong thing

[mon2]

Yes, I think this programmer is suitable but do wait on others to share their comments before proceeding. From a quick review of the schematics for the NM-B021 board, the flash memory chip that is of interest resides @ UC16M1. This appears to be the Winbond W25Q128FVSIQ device and is a QSPI (Quad mode SPI device). Respectively, you will need to either purchase a spare flash memory device that is of the same type or consider to reflash the one that is onboard. Personally suggest to buy a spare one to experiment with. They are not expensive from Digikey / Mouser. In my paid database service, found the flash memory chip dump for this model. This flash chip operates @ 3v3 volts so it should be straightforward to use the referenced programmer. Be sure to first check the programming software to confirm it can support this flash device - 99% sure it is possible. We recall writing our own programming s/w to operate in SPI and QSPI mode to benchmark against the Spansion brand a few years ago.

See attached.

[heartbreakhotel]

I checked stock on the mentioned retailers, there seems to be 0 stock on any of them. Best I could find was eBay at almost 4 times the price. I think it's best I just try flash the onboard chip, the laptop was forgotten about regardless and it fails, it wont be the end of the world, then I might purchase a new one.

[Vesko356]

Reminder: rules and organization of this section
https://www.badcaps.net/forum/troubl...f-this-section

BIOS guides, methods, resources and tools -> https://www.badcaps.net/forum/troubl...rces-and-tools

All bios related requests/replies in dedicated sub-forum only -> BIOS Requests ONLY!

All bios related requests/replies rules are posted here -> RULES UPDATE for BIOS requests/offers *AVOID BANNING, READ BEFORE POSTING*

Thread closed.