I spent way too long to get it working and I was almost ready to give up.

I tried the standalone ISO updater with a LOGO.GIF file. It recognized the image, but after reboot the original Lenovo logo was still there. No error message, no warning, nothing.

Same with the Windows firmware updater.

The one thing that finally worked was a Winflash64.exe incantation found buried somewhere deep in the Lenovo forums 😠

the incantation 
Winflash64.exe -patch -logo logo.gif -exit

Posting for information only. This worked for me, but may - and probably will - brick your machine. You have been warned.

  • czakOP
    5•1 year ago

    Generally these UEFI logos are some kind of a standard - search for “UEFI BGRT” to find out more. But it’s up to the vendor whether to allow (or usually not) changing them.

    ThinkPads are somewhat special in this regard - the firmware package includes a README.TXT which says:

     *  THIS VERSION OF THE FLASH UPDATE PROGRAM GIVES THE OPTION OF      *
 *  REPLACING (OR ELIMINATING) THE DEFAULT "LENOVO" IMAGE THAT IS     *
 *  DISPLAYED DURING SYSTEM START UP.                                 *

    …and then proceeds to list instructions which don’t work 😉

    I don’t think Dell has this as a feature of the firmware update tool.