Lenovo E480 NM-B421 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Lenovo |
| Model | E480 |
| Board number | NM-B421 |
| Board maker (ODM) | Compal |
| Device | Laptop |
| Format | RAR |
| Size | 4.7 MB |
| Marks | clean ME |
| Added | March 31, 2021 |
| Updated | |
| Original file name | Lenovo E480 E580, NM-B421 clear me.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 E480 laptop, board number NM-B421 (Compal design), with the Intel ME region cleaned. 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 the file, and save a backup of the original chip contents. The archive is a RAR file of about 4.7 MB, and its original name refers to the E580 as well, so check the model carefully against your machine.
For board NM-B421 the catalog also has 2 schematics, 3 boardview files, and 8 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 E480 NM-B421. 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.