NM-C421 REV 1 TESTED OK.bin

TXTAbout NM-C421 REV 1 TESTED OK BIOS / EC firmware

NM-C421 REV 1 TESTED OK is a Lenovo BIOS / EC firmware dump for board NM-C421 — tested. The BIN file is 16.0 MB, board revision 1. It was first posted on 23 Dec 2024 and is available in 1 Telegram channel.

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-C421 revision 1.

For the same board you can also find a schematic and a boardview — see all NM-C421 files.

MSGFrom the Telegram post

THINKPAD

J1Download NM-C421 BIOS / EC firmware from Telegram

R1How to download NM-C421 REV 1 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 NM-C421 REV 1 TESTED OK.bin to download it.
3. Open it with Write it with a programmer: CH341A, RT809H, XGecu T48 and similar or Inspect it with a hex editor (HxD).

If a post was deleted, try another source above or search for NM-C421. 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.

.BINWhat is a .bin file and how to open it?