Apple iMac 27 A1312 820-2828 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Model | iMac 27 A1312 |
| Board number | 820-2828 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | ZIP |
| Size | 3.5 MB |
| BIOS chip size | 8 MB |
| Marks | tested by uploader |
| Added | September 5, 2023 |
| Updated | |
| Original file name | apple_iMac_27_A1312_820-2828-A_MX25L6406E TESTED OK.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
apple_iMac_27_A1312_820-2828-A_MX25L6406E TESTED OK This is a BIOS dump for the Apple iMac 27 A1312, board number 820-2828, with the revision listed as A in the original file name. The dump is sized for an 8 MB flash chip and comes in a ZIP archive of about 3.5 MB. The uploader marked it as tested, though that is their own note and not something this catalog has checked. A BIOS dump is used to reprogram the SPI flash chip with a programmer after corruption or a failed update.
The catalog also lists 1 schematic, 1 boardview file, and 3 BIOS dumps for board 820-2828.
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 iMac 27 A1312 820-2828. 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.