ThinkPad_T490S_X390_FX390_NM_B891_Rev2_0_MX25L25633F_32MB_BIOS.zip

TXTAbout ThinkPad T490S X390 FX390 NM-B891 Rev2 0 MX25L25633F 32MB BIOS BIOS / EC firmware

ThinkPad T490S X390 FX390 NM-B891 Rev2 0 MX25L25633F 32MB BIOS is a Lenovo T490S / X390 / FX390 BIOS / EC firmware dump for board NM-B891 for the MX25L25633F SPI flash chip (32 MB). It is packed in a ZIP archive of 16.2 MB, board revision 2. It was first posted on 17 Jan 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-B891 revision 2.

For the same board you can also find a boardview and a schematic — see all NM-B891 files.

J1Download NM-B891 BIOS / EC firmware from Telegram

R1How to download ThinkPad T490S X390 FX390 NM-B891 Rev2 0 MX25L25633F 32MB BIOS

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 ThinkPad_T490S_X390_FX390_NM_B891_Rev2_0_MX25L25633F_32MB_BIOS.zip to download it.
3. Open it with Built into Windows and macOS or 7-Zip (free).

If a post was deleted, try another source above or search for NM-B891. 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.

.ZIPWhat is a .zip file and how to open it?