Thinkpad E480 EE480 EE580 NM-B421 Rev 1.0.rar

TXTAbout Thinkpad E480 EE480 EE580 NM-B421 Rev 1.0 BIOS / EC firmware

Thinkpad E480 EE480 EE580 NM-B421 Rev 1.0 is a Lenovo E480 / EE480 / EE580 BIOS / EC firmware dump for board NM-B421 — tested. It is packed in a RAR archive of 4.7 MB, board revision 1.0. It was first posted on 5 Jan 2021 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 NM-B421 revision 1.0.

For the same board you can also find a boardview and a schematic — see all NM-B421 files.

MSGFrom the Telegram post

TESTED OK 100% TESTED OK

J1Download NM-B421 BIOS / EC firmware from Telegram

R1How to download Thinkpad E480 EE480 EE580 NM-B421 Rev 1.0

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 Thinkpad E480 EE480 EE580 NM-B421 Rev 1.0.rar to download it.
3. Open it with 7-Zip (free) or WinRAR.

If a post was deleted, try another source above or search for NM-B421. 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.

.RARWhat is a .rar file and how to open it?