Lenovo · laptop motherboard

Lenovo RT1WL-3 NM-B861

SchematicBIOSArchive
Board code
NM-B861
Platform
FX490
Made by
LCFC
Revisions
Rev 0.2, Rev 1.0
Files
9
Updated

Lenovo RT1WL-3 NM-B861 is a laptop motherboard designed by LCFC and used in the Lenovo RT1WL-3, Lenovo ThinkPad X1 and Lenovo ThinkPad X1 Carbon.

The catalog has 2 schematics, 6 BIOS files and 1 archive for it, posted between 2021 and 2026 across 4 Telegram channels. Each download button opens the original Telegram post.

File names mention 2 board revisions (Rev 0.2 and Rev 1.0). Check the revision printed on your PCB before relying on a boardview or flashing a BIOS dump — How to Open .FZ Boardview Files explains why it matters.

The schematic files are PDFs; the first pages usually hold the block diagram and the power sequence. New to schematics? Start with How to Use a Schematic and a Boardview Together.

BIOS notes: file names mention 32 MB chip sizes; some archives also hold EC/KBC firmware. Read and save the original chip contents before you write anything to it — Keeping the Windows Product Key (MSDM) When Reflashing a BIOS.

Also listed under platform FX490.

Compatible models

Files for Lenovo RT1WL-3 NM-B861

Schematics 2 All schematics →

BIOS and firmware 6 All bios and firmware →

Other files 1

Notes from the source posts

  • PASSWORD: RT1WL-3_0401
  • ┄┅┅••⋆°𓄼 𓄹°⋆••┅┅┄
  • You can give us as a gift.

Frequently asked questions

Which laptops use the NM-B861 motherboard?
File names in the catalog tie NM-B861 to the Lenovo RT1WL-3, Lenovo ThinkPad X1 and Lenovo ThinkPad X1 Carbon. Laptops sold under one model name can use different boards, so confirm by the code printed on the motherboard.
Which revision of NM-B861 do I have?
Files for this board mention Rev 0.2 and Rev 1.0. The revision is printed on the PCB silkscreen, usually next to the board code. Pick files with the same revision when you can; if yours is not listed, the closest revision is usually fine for the schematic but check part positions in the boardview carefully.
What should I check before flashing the NM-B861 BIOS?
Read the original chip with a programmer and save two copies before writing anything. File names for this board mention 32 MB images; the dump size must match your chip. Some archives include EC/KBC firmware, which may need to be written to a separate chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

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Files are hosted on Telegram by third parties; ExcitingSpas.com only links to public posts. Check that a file matches your board before using it. Disclaimer · Report a file