E580_Type_20KS_20KT_Laptop_ThinkPad_Type_20KS_NM_B421_REV_1_TESTED.rar

TXTAbout E580 Type 20KS 20KT Laptop ThinkPad Type 20KS NM-B421 REV 1 TESTED BIOS / EC firmware

E580 Type 20KS 20KT Laptop ThinkPad Type 20KS NM-B421 REV 1 TESTED is a Lenovo E580 / 20KS / 20KT BIOS / EC firmware dump for board NM-B421 — tested. It is packed in a RAR archive of 4.8 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-B421 revision 1.

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

J1Download NM-B421 BIOS / EC firmware from Telegram

R1How to download E580 Type 20KS 20KT Laptop ThinkPad Type 20KS NM-B421 REV 1 TESTED

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 E580_Type_20KS_20KT_Laptop_ThinkPad_Type_20KS_NM_B421_REV_1_TESTED.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?