Just remember: Get those three things right, and your custom logo will boot up beautifully.
It sounds simple: 120 pixels by 120 pixels, saved as a BMP file. But anyone who has tried it knows that getting the Lenovo OEM logo to actually display correctly involves a bit of pixel-perfect precision. lenovo oem logo bmp 120x120
Have a custom 120x120 logo you’ve successfully flashed? Share your experience in the comments below. For official Lenovo documentation, refer to the "ThinkPad UEFI BIOS Firmware Customization Guide." Just remember: Get those three things right, and