MacBook Air A1466 (820-3437-B).zip

TXTAbout MacBook Air A1466 (820-3437-B) BIOS / EC firmware

MacBook Air A1466 (820-3437-B) is an Apple A1466 BIOS / EC firmware dump for board 820-3437-B. It is packed in a ZIP archive of 4.4 MB. It was first posted on 5 May 2018 and is available in 3 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 820-3437-B.

For the same board you can also find a boardview and a schematic — see all 820-3437-B files.

J1Download 820-3437-B BIOS / EC firmware from Telegram

R1How to download MacBook Air A1466 (820-3437-B)

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 MacBook Air A1466 (820-3437-B).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 820-3437-B. 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?