Lenovo B50-45 ZAWBB LA-B291P BIOS (REV 1.0)
File details
| Type | BIOS |
|---|---|
| Brand | Lenovo |
| Model | B50-45 |
| Board number | LA-B291P |
| Platform | ZAWBB |
| Board maker (ODM) | Compal |
| Revision | 1.0 |
| Device | Laptop |
| Format | RAR |
| Size | 2.4 MB |
| Marks | includes EC firmware |
| Added | September 12, 2018 |
| Updated | |
| Original file name | Lenovo B50-45 20380 ZAWBA ZAWBB LA-B291P REV 1.0 BIOS+EC.rar |
Where to get the file
Opens the matching file on RM Schematics, or its source details if it is not catalogued there yet.
Alternative links
No other copies are known yet.
Description
BIOS dump for the Lenovo B50-45 laptop, board number LA-B291P, revision 1.0, platform ZAWBB, made by Compal. The archive is a RAR of about 2.4 MB and includes the EC/KBC firmware alongside the BIOS image. Technicians use a dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. Before writing anything, confirm that the board number and revision on your motherboard match, and save a full backup of the original chip contents so you can recover if the process goes wrong.
For board LA-B291P the catalog also has 1 schematic, 2 boardview files, and 4 BIOS dumps.
Description generated from the catalog data. ·
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Questions about this file
How do I flash this BIOS dump?
Write it to the SPI flash chip with a programmer such as the CH341A and a SOIC8 clip. Read and keep the original contents first, and check that the chip size matches the dump.
Will this BIOS work on my board?
Only if the board number and revision match: Lenovo B50-45 ZAWBB LA-B291P. Dumps from a different board or revision can leave the board dead.
What does “clean ME” mean?
The Intel ME region in the dump has been reset, so it can be used on another board of the same model. Keep your original dump and transfer serial numbers if needed.