The term "patched" refers to the method used to inject this custom image into the system:
Export the file as a .bmp image. Ensure any options for "Do not write color space information" are checked to minimize headers. Phase 2: Firmware Injection
Most Lenovo utilities look for a specific filename, such as LOGO.BMP or USERLOGO.BMP , placed in the same folder as the flash executable.
[Original BIOS ROM] ──> [Extract Capsule via UEFITool] ──> [Locate Logo GUID] │ [Patched Boot Screen] <── [Flash Patched ROM] <── [Replace Raw BMP (120x120)]
However, the barriers are significant: the need for exact pixel dimensions, risky BIOS flashing, and broken Secure Boot. If you proceed, do so with a hardware programmer on hand and a full backup of your original BIOS.
Place a 24-bit uncompressed BMP named LOGO1.BMP into the update directory for standard resolutions.