Apple A1419 820-3478 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Model | A1419 |
| Board number | 820-3478 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 3.9 MB |
| BIOS chip size | 8 MB |
| Added | June 4, 2022 |
| Updated | |
| Original file name | A1419 820-3478-A BIOS 8MB BIOS.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
- Bios Skema boardview laptop Posted: 6/13/22 ● live
- Bios Skema boardview laptop Posted: 6/13/22 ● live
Description
BIOS dump for the Apple A1419 laptop, board number 820-3478, supplied for an 8 MB flash chip. The archive is a RAR file of about 3.9 MB, named A1419 820-3478-A BIOS 8MB BIOS.rar. Technicians use a dump like this to reprogram the SPI flash chip with a programmer after a corrupted BIOS or a failed update. Before flashing, confirm that the board number and revision on your logic board match the file, and read and save the original chip contents as a backup first.
For board 820-3478 the catalog also has 1 schematic and 1 boardview file.
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 A1419 820-3478. 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.