Lenovo IdeaPad EG521 EG721 NM-B452 BIOS (REV 1.0, clean ME)
File details
| Type | BIOS |
|---|---|
| Brand | Lenovo |
| Model | IdeaPad EG521 |
| Board number | NM-B452 |
| Platform | EG721 |
| Board maker (ODM) | Compal |
| Revision | 1.0 |
| Device | Laptop |
| Format | ZIP |
| Size | 5.1 MB |
| Marks | clean ME, tested by uploader |
| Added | April 25, 2021 |
| Updated | |
| Original file name | ideapad EG521 EG522 EZ511 EG721 NM-B452 REV 1.0 CLEAR ME.zip |
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
520-15IKB EG521 EG522 EZ511 EG721 NM-B452 REV 1.0 2017.07.03 TESTED OK BIOS dump for the Lenovo IdeaPad EG521 laptop, Compal board NM-B452 revision 1.0, with the platform listed as EG721. The uploader marks it as tested and the Intel ME region as 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 NM-B452 rev 1.0, and save the original chip contents as a backup. The archive is a 5.1 MB ZIP.
For board NM-B452 the catalog also has 3 schematics, 2 boardview files, and 12 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 IdeaPad EG521 EG721 NM-B452. 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.