Usually uncompressed (BI_RGB) to ensure the bootloader can render it instantly. How to Install the Lenovo OEM Logo

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

For many commercial-grade Lenovo laptops (such as the ThinkPad series), the manufacturer natively provides a legal, safe method to change the startup image using their official BIOS update packages.

To help narrow down the exact steps for your specific machine, please let me know: What is the of your Lenovo device? Which operating system are you currently running?