E550C_NM-A221_IT8586E_OK.rar
BIOS / EC firmware for Lenovo E550C · board NM-A221, NM-A241, NM-E241 · 45.8 KB · shared in 1 Telegram post.
TXTAbout E550C NM-A221 IT8586E OK BIOS / EC firmware
E550C NM-A221 IT8586E OK is a Lenovo E550C BIOS / EC firmware dump for board NM-A221 / NM-A241 for the IT8586E SPI flash chip — tested. It is packed in a RAR archive of 45.8 KB. It was first posted on 2 Dec 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-A221.
For the same board you can also find a schematic — see all NM-A221 files.
- Type
- BIOS & EC
- Format
- .rar · RAR archive
- Size
- 45.8 KB
- Brand
- Lenovo
- Board number
- NM-A221, NM-A241, NM-E241
- Model
- E550C
- Chip
- IT8586E
- Notes
- tested
- First posted
- 2 Dec 2025
- Last posted
- 2 Dec 2025
- Sources
- 1
Tags
MSGFrom the Telegram post
Lenovo E555 NM-A241 Bios NM-E241 REV0.3 Schematic FREE
J1Download NM-A221 BIOS / EC firmware from Telegram
- 🛠💻SKCLAPPY BIOS💻🛠 @skclappybios · 2 Dec 2025Open post
R1How to download E550C NM-A221 IT8586E OK
- Press Download in Telegram. The post opens in the Telegram app, or on a t.me preview page — choose “View in Telegram”.
- You don’t need to join the channel. Tap the file E550C_NM-A221_IT8586E_OK.rar to download it.
- Open it with 7-Zip (free) or WinRAR.
If a post was deleted, try another source above or search for NM-A221. 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?
RAR archive. A compressed folder. It can hold a schematic, a boardview, a BIOS dump or all three.
Open with:
- 7-Zip (free)
- WinRAR
Tip: If the archive asks for a password, look for it in the Telegram post text.