720S-15IKB Laptop (ideapad)
720S-15IKB, 720S Touch-15IKB
720S-15IKB Laptop (ideapad), (Type: 81AC)
BIOS 6TCN32WW
MB LS720 17823-1N
17823.pdf
IO.pdf
Schematics
720S-15IKB, 720S Touch-15IKB
720S-15IKB Laptop (ideapad), (Type: 81AC)
BIOS 6TCN32WW
MB LS720 17823-1N
17823.pdf
IO.pdf
Schematics
About this board
This thread is for the 720S-15IKB 720S Touch-15IKB Laptop (ideapad) LS720 with main board 17823-1N.
Lenovo had this board built by Wistron; Wistron board numbers are 5–6 digits plus a revision. Check the number printed on the PCB before you download.
What this thread covers
- BIOS (full SPI chip dump, .bin)
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 17823-1N in File Finder.
Attachments
720S-15IKB, 720S Touch-15IKB LS720 17823-1N 6TCN32WW.bin.zip
4.6 MB · Views: 2
4.6 MB · Views: 2
17823.pdf
3.3 MB · Views: 10
3.3 MB · Views: 10
IO.pdf
234.5 KB · Views: 8
234.5 KB · Views: 8
