[SeaBIOS] Bootsplash.jpg encoding question.

[AreYouLoco?]

Hi,

I am trying to make SeaBIOS on Thinkpad T420 running coreboot display bootsplash but I am failing to prepare the file.

I tried to export file using GIMP and this info:
https://puri.sm/wp-content/uploads/2017/02/coreboot-splash-gimp-export-optio...

Relevant part of the coreboot log is:
1508[INFO ] Setting up bootsplash in 1366x768@32
1509[INFO ] CBFS: Found 'bootsplash.jpg' @0x46480 size 0x48e5 in mcache @0x7ffdd1c8
1510[DEBUG] Bootsplash image resolution: 1366x768
1511[ERROR] Bootsplash could not be decoded. jpeg_decode returned 4.

I also tried to add bootsplash.bmp but then it says it didnt found bootsplash.jpg.

Any hints?

AreYouLoco?