X1_Yoga_4th_Gen_Type_20QF,_20QG_Type_20QG_NM_B861_REV_1_TYPE_C_1MB.rar

TXTAbout X1 Yoga 4th Gen Type 20QF, 20QG Type 20QG NM-B861 REV 1 TYPE C 1MB BIOS / EC firmware

X1 Yoga 4th Gen Type 20QF, 20QG Type 20QG NM-B861 REV 1 TYPE C 1MB is a Lenovo 4th / 20QF / 20QG BIOS / EC firmware dump for board NM-B861 (1 MB). It is packed in a RAR archive of 116 KB, 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-B861 revision 1.

For the same board you can also find a schematic and a boardview — see all NM-B861 files.

J1Download NM-B861 BIOS / EC firmware from Telegram

R1How to download X1 Yoga 4th Gen Type 20QF, 20QG Type 20QG NM-B861 REV 1 TYPE C 1MB

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 X1_Yoga_4th_Gen_Type_20QF,_20QG_Type_20QG_NM_B861_REV_1_TYPE_C_1MB.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-B861. 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?