Lenovo UEFI firmware parses specific image dimensions and file structures during the initial boot sequence. The system rejects or distorts images that fail to meet these parameters. Image Dimensions and Scale
Use tools like InsydeImageDecoder or Hex editors to verify that your patched BMP headers match standard Lenovo specifications before integration. lenovo oem logo bmp 120x120 patched
For newer ThinkPad models, the update tool searches for user-supplied images within the root update directory using predefined naming conventions. Lenovo UEFI firmware parses specific image dimensions and
Implementing a custom startup image requires precise navigation of technical specifications, image formatting rules, and firmware update protocols. Deviating from these requirements can cause display distortion or firmware corruption. Technical Requirements for Lenovo Boot Logos image formatting rules