thinkpad w540
lkm-1 swg2
mb 12308-2
48.4lo16.021
BIOS BIN
lkm-1 swg2
mb 12308-2
48.4lo16.021
BIOS BIN
About this board
This thread is for the thinkpad w540 lkm-1 swg2 with main board 12308-2 / 48.4LO16.021.
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.
What this thread covers
- BIOS (full SPI chip dump, .bin)
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 12308-2 in File Finder.
Attachments
bios+ec (1).zip
6.1 MB · Views: 37
6.1 MB · Views: 37
