LENOVO_THINKPAD_E485_EE485_EE585_NMB531_REV_1_0_2018_02_22_AMD_RYZEN.rar

TXTAbout LENOVO THINKPAD E485 EE485 EE585 NM-B531 REV 1 0 2018 02 22 AMD RYZEN BIOS / EC firmware

LENOVO THINKPAD E485 EE485 EE585 NM-B531 REV 1 0 2018 02 22 AMD RYZEN is a Lenovo E485 / EE485 / EE585 BIOS / EC firmware dump for board NM-B531 — tested. It is packed in a RAR archive of 7.3 MB, board revision 1, Ryzen 5 2500U CPU. It was first posted on 25 Jun 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-B531 revision 1.

For the same board you can also find a schematic — see all NM-B531 files.

MSGFrom the Telegram post

LENOVO THINKPAD E485 EE485 EE585 NMB531 REV 1.0 2018-02-22 AMD RYZEN 5 2500U OKOKOKOK TESTED OK 100%

J1Download NM-B531 BIOS / EC firmware from Telegram

R1How to download LENOVO THINKPAD E485 EE485 EE585 NM-B531 REV 1 0 2018 02 22 AMD RYZEN

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_E485_EE485_EE585_NMB531_REV_1_0_2018_02_22_AMD_RYZEN.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-B531. 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?