Please follow steps below to change logo screen of Bucker platform:  

1.Copy bios rom file (SBK1A001.ROM) and user logo image file (image.bmp)
  to the directory containing oemlogod.exe and rombuild.exe .
2.Execute command "oemlogod SBK1A001.ROM image.bmp" in DOS screen to make
  a new rom file SBK1A001.ROM incorporated with user logo image.
3.Copy the new rom file SBK1A001.ROM to Bucker platform with AFUDOS.exe
  in the same directory.
4.Execute command "AFUDOS /iSBK1A001.ROM /pb /c1" to flash new bios into
  system. After flashing completed, reboot system. The new logo should
  appear after system reboot.
5.To remove the user logo, flash the original released bios into system
  with the command "AFUDOS /iSBK1A001.ROM /pb /c1" again.
      
Note:
1.Buckner bios will show up a progress bar on the top of screen, and some
  hint text on the bottom of screen. Please reserve blank(black) in these
  area in user logo image.