L15 Gen 4 (Type 21H3, 21H4) LG4 L15 RPL RT UMA MB 8L 223042-1
CLEAN ME BIOS
64MB BIOS
EC BIOS 16MB
EC NUVOTON 256KB WITH DMI
SRMLZ (Intel Core i5-1345U)
FIXED ERROR IN STARTUP ME UPDATE
TESTED IMRANROMI
CLEAN ME BIOS
64MB BIOS
EC BIOS 16MB
EC NUVOTON 256KB WITH DMI
SRMLZ (Intel Core i5-1345U)
FIXED ERROR IN STARTUP ME UPDATE
TESTED IMRANROMI
About this board
This thread is for the L15 Gen 4 (Type 21H3 21H4) Laptop (ThinkPad) Type 21H4 with main board 223042-1.
The board was manufactured by Wistron for Lenovo. Wistron board numbers are 5–6 digits plus a revision, so you can confirm it on the PCB silkscreen.
Files listed for this board
- BIOS (full SPI chip dump, .bin)
Typical reasons to reflash: no power or no display after a failed BIOS update, a BIOS/supervisor password lock, or a corrupted Intel ME region.
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 223042-1 in File Finder.
Attachments
L15 Gen 4 (Type 21H3, 21H4) 223042-1 CLEAN ME BIOS.rar
13.7 MB · Views: 90
13.7 MB · Views: 90
L15 Gen 4 (Type 21H3, 21H4) 223042-1 EC BIOS.rar
6.6 MB · Views: 67
6.6 MB · Views: 67
NPCX_256KB_CRC32_0x6525CC05.bin
256 KB · Views: 22
256 KB · Views: 22
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