LENOVO_THINKPAD_T480S_ET481_NM_B471_REV_1_0_2017_10_30_UNLOCKED.rar

TXTAbout LENOVO THINKPAD T480S ET481 NM-B471 REV 1 0 2017 10 30 UNLOCKED BIOS / EC firmware

LENOVO THINKPAD T480S ET481 NM-B471 REV 1 0 2017 10 30 UNLOCKED is a Lenovo T480S / ET481 BIOS / EC firmware dump for board NM-B471 — password unlock, tested. It is packed in a RAR archive of 8.2 MB, board revision 1. It was first posted on 28 Mar 2022 and is available in 2 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-B471 revision 1.

For the same board you can also find a schematic — see all NM-B471 files.

MSGFrom the Telegram post

WORKING 100%

J1Download NM-B471 BIOS / EC firmware from Telegram

R1How to download LENOVO THINKPAD T480S ET481 NM-B471 REV 1 0 2017 10 30 UNLOCKED

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 LENOVO_THINKPAD_T480S_ET481_NM_B471_REV_1_0_2017_10_30_UNLOCKED.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-B471. 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?