Lenovo A550-27IMB - A550_27IMB - IB460SL2 - NM-C971
Schematic
A550-27IMB REV1.0 PDF
DGPU N18P PDF
Schematic
A550-27IMB REV1.0 PDF
DGPU N18P PDF
About this board
This thread is for the Lenovo A550-27IMB A550 27IMB IB460SL2 with main board NM-C971.
Lenovo had this board built by LCFC; LCFC (Lenovo/Compal) board numbers start with NM-. Check the number printed on the PCB before you download.
Files usually needed for this board
- BIOS (full SPI chip dump, .bin)
- EC / KBC firmware, if the board uses a separate EC chip
- Schematic (PDF)
- Boardview (.brd / .bdv / .cad)
Common cases: dead board after an interrupted BIOS update, ME region errors, missing serial number or UUID after a board swap, or a password lock.
Back up the original dump first — it contains machine-specific data (serial, UUID, MAC, ME), and you will want it if anything goes wrong.
If you have a working file for this board, please share it below. More files: search NM-C971 in File Finder.
Attachments
A550-27IMB REV1.0 Schematic.pdf
6.5 MB · Views: 8
6.5 MB · Views: 8
DGPU N18P.pdf
485.3 KB · Views: 6
485.3 KB · Views: 6
