Z_INFO_SERVICE_LENOVO_THINKPAD_L480_TYPE_20LS,20LT_EL480_EL580_NM.RAR

TXTAbout Z INFO SERVICE LENOVO THINKPAD L480 TYPE 20LS,20LT EL480 EL580 NM BIOS / EC firmware

Z INFO SERVICE LENOVO THINKPAD L480 TYPE 20LS,20LT EL480 EL580 NM is a Lenovo L480 / 20LS / 20LT BIOS / EC firmware dump for board NM-B461 (16 MB) — tested. It is packed in a RAR archive of 5.4 MB, I5 CPU. It was first posted on 4 Apr 2026 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-B461.

For the same board you can also find a schematic and a boardview — see all NM-B461 files.

MSGFrom the Telegram post

Z INFO SERVICE LENOVO THINKPAD L480 (TYPE 20LS,20LT) EL480 EL580 NM-B461 REV1.0 2017-11-17 I5-8TH GEN 16 MB CLEAN TESTED OK DONE BIOS 100% TESTED & VERIFIED BIOS Fully Working Stable Reliable Official Website

J1Download NM-B461 BIOS / EC firmware from Telegram

R1How to download Z INFO SERVICE LENOVO THINKPAD L480 TYPE 20LS,20LT EL480 EL580 NM

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 Z_INFO_SERVICE_LENOVO_THINKPAD_L480_TYPE_20LS,20LT_EL480_EL580_NM.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-B461. 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?