Apple MacBook A1181 M42c MBP (820-1889-a) BIOS.zip

TXTAbout Apple MacBook A1181 M42c MBP (820-1889-A) BIOS BIOS / EC firmware

Apple MacBook A1181 M42c MBP (820-1889-A) BIOS is an Apple A1181 / M42c BIOS / EC firmware dump for board 820-1889-A. It is packed in a ZIP archive of 1.1 MB. It was first posted on 4 Jan 2020 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 820-1889-A.

For the same board you can also find a boardview and a schematic — see all 820-1889-A files.

J1Download 820-1889-A BIOS / EC firmware from Telegram

R1How to download Apple MacBook A1181 M42c MBP (820-1889-A) BIOS

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 MacBook A1181 M42c MBP (820-1889-a) BIOS.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 820-1889-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?