If possible, test your patched image on a similar firmware environment before flashing physical hardware.
The BIOS expects a 8-bit (256-color) palette, but you provided 24-bit. Fix: Convert to 8-bit indexed BMP. Ensure the palette has black (#000000) at index 0. lenovo oem logo bmp 120x120 patched
This happens if the aspect ratio isn't 1:1. Ensure your 120x120 image isn't being stretched by the "Full Screen Logo" setting in BIOS. If possible, test your patched image on a
: Historically required to be 16-color or 16-bit depending on the specific BIOS generation. File Size : Typically must be under 30KB to 60KB total. lenovo oem logo bmp 120x120 patched
Follow the on-screen prompts. The system will reboot and flash the new logo into the firmware. Troubleshooting & Considerations