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- LENOVO 1503B 01 01 OKOKBIOS · 8.00 MB · 12 May 2025BIOS bin—8.00 MB
- LENOVO 1503B 01 01 OKOKBIOS · 8.00 MB · 9 May 2025BIOS bin—8.00 MB
- LENOVO 1503B 01 01 PDFSchematic · 1.18 MB · 15 Dec 2024Schematic rar—1.18 MB
- LENOVO 1503B 01 01 PDFSchematic · 1.22 MB · 28 Apr 2024Schematic pdf—1.22 MB
- LENOVO 1503B 01 01 REV SOVP N23 SOVP BIOS telegram BIOS Repair 2025BIOS · 7.42 MB · 23 Sept 2025BIOS zip—7.42 MB
- LENOVO 1503B 01 01 PDF
Lenovo schematic distributed as a PDF inside a small 1.22 MB RAR archive, referencing board code 1503B_01_01.
Schematic · 1.22 MB · 27 Apr 2024Schematic rar—1.22 MB - LENOVO 1503B 01 01 REV SOVP N23-SOVP BIOS
Lenovo BIOS archive for the board coded 1503B_01_01, which the name also ties to SOVP and N23-SOVP, compressed into a 6.59 MB RAR.
BIOS · 6.59 MB · 27 Apr 2024BIOS rar—6.59 MB