ThinkPad T490S X390 FX390 NM-B891 Rev2.0 MX25L25633F.rar

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

ThinkPad T490S X390 FX390 NM-B891 Rev2.0 MX25L25633F is a Lenovo T490S / X390 / FX390 BIOS / EC firmware dump for board NM-B891 for the MX25L25633F SPI flash chip. It is packed in a RAR archive of 14.8 MB, board revision 2.0. It was first posted on 15 Jul 2020 and is available in 4 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 2.0.

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

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.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-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.

.RARWhat is a .rar file and how to open it?