Apple iMac A1419-EMC 820-6478 BIOS
File details
| Type | BIOS |
|---|---|
| Brand | Apple |
| Model | iMac A1419-EMC |
| Board number | 820-6478 |
| Board maker (ODM) | Apple |
| Device | Laptop |
| Format | RAR |
| Size | 3.9 MB |
| Added | December 2, 2018 |
| Updated | |
| Original file name | iMac A1419-EMC 2639-820-6478-A CLEAN.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 iMac A1419-EMC, board number 820-6478, supplied as a RAR archive of about 3.9 MB under the file name iMac A1419-EMC 2639-820-6478-A CLEAN.rar. The file name marks it as a clean version. Technicians use a BIOS dump like this to reprogram the SPI flash chip with a programmer after a corrupted firmware image or a failed update. Confirm that the board number and revision on your board match the dump before flashing, and read out and save the original chip contents first so you can restore them if needed.
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 A1419-EMC 820-6478. 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.