Apple A1502 820-3476 BIOS (8 MB)
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Model | A1502 |
| Board number | 820-3476 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 3.9 MB |
| BIOS chip size | 8 MB |
| Added | April 22, 2018 |
| Updated | |
| Original file name | A1502_820-3476-A_MX25L6406E_new.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 Apple A1502 laptop, board number 820-3476, supplied as a RAR archive of about 3.9 MB with an 8 MB flash chip. The original file name, A1502_820-3476-A_MX25L6406E_new.rar, indicates revision A and an MX25L6406E chip, so compare these against the markings on your board. Technicians use a BIOS dump like this to reprogram the SPI flash with a programmer after corruption or a failed update. Confirm that the board number and revision match yours before flashing, and back up the original chip contents first.
The catalog also lists 2 schematics, 2 boardview files, and 3 BIOS dumps for board 820-3476.
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: Apple A1502 820-3476. 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.