For enterprise systems like ThinkPads, Lenovo provides official utilities within their BIOS update packages. Users place the custom 120x120 BMP file into the flash utility folder, rename it according to the included text instructions (often LOGO.BMP ), and run the update executable to flash the new image safely. Method 2: UEFI Firmware Editing Tools
The utility will verify the image, ask for confirmation, and reboot to flash the new logo. Alternative: Automated Tools lenovo oem logo bmp 120x120 patched
Lenovo provides official utilities to inject custom images into BIOS updates safely. This method eliminates the need to manually flash raw EEPROM chips. The utility will read the custom LOGO
If you prefer not to use command-line utilities, community-developed tools can automate the "patching" process: validate its format and size
Run the BIOS update command via an Administrator Command Prompt. The utility will read the custom LOGO.BMP , validate its format and size, patch it into the ROM payload, and prompt you to reboot to finalize the firmware update. Method 2: Advanced UEFI Tool Patching (For Experts)
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.
Flashing modified firmware carries inherent risks that can permanently disable your hardware.