BIOS - Lenovo B490s 12221-2 lm490s Rev:1.3

Dec 22, 2024

Lenovo B490s 12221-2 lm490s Rev:1.3
biosbin.zip
schemaics

About this board

Lenovo B490s lm490s — motherboard 12221-2.

Lenovo had this board built by Wistron; Wistron board numbers are 5–6 digits plus a revision. Check the number printed on the PCB before you download. Board revision: 1.3. Match the revision as well as the board number.

Files usually needed for this board

BIOS (full SPI chip dump, .bin)
EC / KBC firmware, if the board uses a separate EC chip
Schematic (PDF)
Boardview (.brd / .bdv / .cad)

Common cases: dead board after an interrupted BIOS update, ME region errors, missing serial number or UUID after a board swap, or a password lock.

Back up the original dump first — it contains machine-specific data (serial, UUID, MAC, ME), and you will want it if anything goes wrong.

If you have a working file for this board, please share it below. More files: search 12221-2 in File Finder.

Click to expand...

BIOS Lenovo B490s 12221-2 lm490s Rev:1.3

Attachments

Similar threads

Trending content

Make PKBIOSFIX part of your bench.