Lenovo EG721 NM-B452 BIOS (REV 1.0)
File details
| Type | BIOS |
|---|---|
| Brand | Lenovo |
| Board number | NM-B452 |
| Platform | EG721 |
| Board maker (ODM) | Compal |
| Revision | 1.0 |
| Device | Laptop |
| Format | RAR |
| Size | 13 MB |
| Marks | tested by uploader |
| Added | March 15, 2023 |
| Updated | |
| Original file name | LENOVO_IDEAPAD_IdeaPad_520_15IKB_EG521_EG522_EZ511_EG721_NM_B452.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
LENOVO IDEAPAD IdeaPad 520-15IKB EG521 EG522 EZ511 EG721 NM-B452 Rev1.0 2017-07-03 SR3LA N17S-G1-A1 WORKING BIOS 100% BIOS dump for the Lenovo laptop board NM-B452 (Compal, platform EG721), revision 1.0, packaged as a RAR archive of about 13.2 MB. The uploader marked it as tested, though that is their own claim. The file name also lists the IdeaPad 520-15IKB, EG521, EG522 and EZ511 variants, so check the board number and revision on your own motherboard before flashing. A BIOS dump is used to reprogram the SPI flash chip with a programmer after BIOS corruption or a failed update.
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 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.