Lenovo · laptop motherboard

Lenovo BM5866

SchematicBIOS
Platform
Bitland BM5866
Made by
Bitland
Revisions
Rev 1.3
Files
5
Updated

Lenovo BM5866 is a laptop motherboard designed by Bitland and used in the Lenovo BM5866.

The catalog has 1 schematic and 4 BIOS files for it, posted between 2021 and 2024 across 2 Telegram channels. Each download button opens the original Telegram post.

The files are marked Rev 1.3; other revisions of the same board can differ in parts and layout.

The schematic is a PDF; 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 16 MB chip sizes. 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 Bitland BM5866.

Compatible models

  • Lenovo BM5866

Files for Lenovo BM5866

Schematics 1 All schematics →

BIOS and firmware 4 All bios and firmware →

Frequently asked questions

Which revision of Lenovo BM5866 do I have?
Files for this board mention Rev 1.3. 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 Lenovo BM5866 BIOS?
Read the original chip with a programmer and save two copies before writing anything. File names for this board mention 16 MB images; the dump size must match your chip. A dump from another board carries that board's serial number and MAC address, so restore yours from the backup.

Guides for this board

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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