Apple 820-3023 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Board number | 820-3023 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 3.7 MB |
| Added | January 30, 2019 |
| Updated | |
| Original file name | K21_051_8870_820_3023_A_APPLE_MACBOOK.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 an Apple laptop, board number 820-3023, supplied as a RAR archive of about 3.7 MB under the original file name K21_051_8870_820_3023_A_APPLE_MACBOOK.rar. The file is intended for reprogramming the SPI flash chip with a programmer after BIOS corruption or a failed update. Before flashing, confirm that the board number and revision on your motherboard match the file name and back up the original chip contents so you can restore them if needed.
For board 820-3023 the catalog also has 2 schematics, 1 boardview file, and 2 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: Apple 820-3023. 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.