BIOS

apple_iMac_27_A1312_820-2828-A_MX25L6406E TESTED OK.zip

BIOS / EC firmware for Apple A1312 · board 820-2828-A · 3.5 MB · shared in 6 Telegram posts.

TXTAbout apple iMac 27 A1312 820-2828-A MX25L6406E TESTED OK BIOS / EC firmware

apple iMac 27 A1312 820-2828-A MX25L6406E TESTED OK is an Apple A1312 BIOS / EC firmware dump for board 820-2828-A for the MX25L6406E SPI flash chip — tested. It is packed in a ZIP archive of 3.5 MB. It was first posted on 5 Sept 2023 and is available in 6 Telegram channels.

Write it with an SPI programmer such as CH341A, RT809H or XGecu T48 to revive a board after a failed BIOS update, fix a corrupted Intel ME region or remove a forgotten BIOS password. Read and save the original chip first, and check that your board is 820-2828-A.

For the same board you can also find a boardview, a schematic and board packs — see all 820-2828-A files.

Type
BIOS & EC
Format
.zip · ZIP archive
Size
3.5 MB
Brand
Apple
Board number
820-2828-A
Model
A1312
Chip
MX25L6406E
Notes
tested
First posted
5 Sept 2023
Last posted
29 Oct 2023
Sources
6

Tags

MSGFrom the Telegram post

apple iMac 27 A1312 820-2828-A MX25L6406E TESTED OK TESTED OK 100%

J1Download 820-2828-A BIOS / EC firmware from Telegram

R1How to download apple iMac 27 A1312 820-2828-A MX25L6406E TESTED OK

  1. Press Download in Telegram. The post opens in the Telegram app, or on a t.me preview page — choose “View in Telegram”.
  2. You don’t need to join the channel. Tap the file apple_iMac_27_A1312_820-2828-A_MX25L6406E TESTED OK.zip to download it.
  3. Open it with Built into Windows and macOS or 7-Zip (free).

If a post was deleted, try another source above or search for 820-2828-A. Step-by-step help: downloading from Telegram.

Back up the original chip twice before writing this dump, and check that the board number and chip size match. See how to flash a BIOS chip.

.ZIPWhat is a .zip file and how to open it?

ZIP archive. A compressed folder with one or more files inside.

Open with:

  • Built into Windows and macOS
  • 7-Zip (free)