Lenovo L390 laptops (ThinkPad) - Type 20NS BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Lenovo |
| Device | Laptop |
| Format | RAR |
| Size | 6.7 MB |
| Added | October 13, 2026 |
| Updated | |
| Original file name | L390 laptops (ThinkPad) - Type 20NS.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 a Lenovo laptop, listed in the file name as ThinkPad L390, Type 20NS, supplied as a RAR archive of about 6.7 MB. Technicians use a dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. The facts do not state a board number, revision or flash chip size, so confirm that the board you are working on matches the L390 Type 20NS model before flashing. Save the original chip contents first so you have a way back if the write goes wrong.
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 L390 laptops (ThinkPad) - Type 20NS. 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.