CARBON_X1_GX4A0_GYG50_NM_C881_REV_1_0_GREEN.rar

TXTAbout CARBON X1 GX4A0 GYG50 NM-C881 REV 1 0 GREEN BIOS / EC firmware

CARBON X1 GX4A0 GYG50 NM-C881 REV 1 0 GREEN is a Compal GX4A0 / GYG50 BIOS / EC firmware dump for board NM-C881 — tested. It is packed in a RAR archive of 13.0 MB, board revision 1. It was first posted on 11 Oct 2025 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-C881 revision 1.

For the same board you can also find a schematic — see all NM-C881 files.

MSGFrom the Telegram post

CARBON X1 GX4A0 GYG50 NM C881 REV 1 0 GREEN TESTED OK 100%

J1Download NM-C881 BIOS / EC firmware from Telegram

R1How to download CARBON X1 GX4A0 GYG50 NM-C881 REV 1 0 GREEN

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 CARBON_X1_GX4A0_GYG50_NM_C881_REV_1_0_GREEN.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-C881. 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?