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- AFS LENOVO CIG41S (VER 1.2) 1MB BIOS & ECBIOS · 395 KB · 1 Feb 2024BIOS rar—395 KB
- LENOVO CIG41S VER 1 2 1MB BIOS & EC telegram BIOS Repair 2025 09BIOS · 570 KB · 23 Sept 2025BIOS zip—570 KB
- LENOVO CIG41S (VER 1.2) 1MB BIOS & EC
Lenovo CIG41S motherboard firmware at version 1.2, combining a 1MB BIOS image with the EC controller firmware, packed as a ZIP of 481 KB.
BIOS · 481 KB · 15 Nov 2021BIOS zip—481 KB - Lenovo B300 CIG41S V1.1 PDF
PDF schematic for the Lenovo B300 all-in-one using the CIG41S motherboard, version 1.1, archived as RAR.
Schematic · 1.51 MB · 15 Nov 2021Schematic rar—1.51 MB - Lenovo Idea Center B300 CIG41S V2.1 BIOS & EC
BIOS and EC firmware set for the Lenovo IdeaCentre B300 all-in-one with the CIG41S board, version 2.1, in a 698 KB RAR archive.
BIOS · 698 KB · 15 Nov 2021BIOS rar—698 KB