How to change or add own boot logo into old Lenovo Phoenix bios?

My old Lenovo Notebook has Phoenix BIOS: Phoenix FirstBIOS Notebook Pro Version 2.0
It contains some logo0.bin - logo2.bin. Headers look like following:
Logo0.bin(part of the header):

Code:

00000000h: 53 43 52 4E 7E 81 64 81 10 00 10 03 12 03 05 01 ; SCRN~乨?.......
00000010h: 00 00 00 20 00 00 00 20 00 20 20 00 00 00 20 20 ; ... ... .  ...  
00000020h: 00 20 00 20 20 30 30 30 20 20 20 3F 00 00 00 3F ; . .  000   ?...?
00000030h: 00 3F 3F 00 00 00 3F 3F 00 3F 00 3F 3F 3F 3F 3F ; .??...??.?.?????
00000040h: 00 00 00 10 10 10 37 37 37 31 31 31 01 03 0F 01 ; ......777111....
00000050h: 01 01 00 0C 3F 39 39 39 31 05 01 1B 1B 2F 09 09 ; ....?9991..../..
00000060h: 08 01 01 14 38 00 30 28 28 28 36 36 36 24 24 26 ; ....8.0(((666$$&
00000070h: 22 22 2F 23 23 23 01 01 0E 38 00 20 00 09 2D 3E ; ""/###...8. ..->
00000080h: 3E 3E 02 02 02 31 29 28 01 01 2D 07 07 07 3A 3C ; >>...1)(..-...:<
00000090h: 00 3A 3A 3A 01 01 18 3F 3E 3C 03 03 03 0A 0A 0A ; .:::...?><......
000000a0h: 0B 0C 16 0D 0D 2F 1B 1B 1B 13 14 00 05 05 05 01 ; ...../..........
000000b0h: 01 11 29 32 3C 2F 32 3F 0D 0D 0D 14 14 14 31 16 ; ..)2</2?......1.
000000c0h: 13 27 27 2F 32 34 00 09 09 09 01 01 1E 21 21 21 ; .''/24.......!!!
000000d0h: 17 18 1E 2D 2D 31 32 32 32 01 01 22 38 28 30 0D ; ...--1222.."8(0.
000000e0h: 17 3F 15 15 15 18 18 18 1D 1E 22 2B 2B 31 2B 2B ; .?........"++1++
000000f0h: 2B 2A 2B 00 11 11 11 01 01 1B 38 08 30 22 28 3F ; +*+.......8.0"(?
00000100h: 25 25 25 27 27 27 31 0D 0A 07 07 2D 2D 2D 2D 2C ; %%%'''1....----,
00000110h: 2C 2C 19 19 19 01 01 0B 10 18 30 29 29 29 0E 0E ; ,,........0)))..
00000120h: 0E 28 28 2B 09 09 2F 17 17 17 1B 1C 00 26 26 26 ; .((+../......&&&
00000130h: 01 01 25 18 20 30 18 20 3F 1A 1A 1A 31 24 24 13 ; ..%. 0. ?...1$$.
00000140h: 13 2F 1D 1D 1D 22 23 00 2E 2E 2E 01 01 08 3B 3C ; ./..."#.......;<
00000150h: 3F 04 04 04 31 1E 1E 03 03 2D 1C 1C 1C 2A 2A 2A ; ?...1....-...***
00000160h: 01 01 05 08 10 30 33 36 3F 12 13 1B 11 11 2F 01 ; .....036?...../.
00000170h: 01 03 28 28 29 37 39 3F 08 08 08 17 17 2F 13 13 ; ..(()79?...../..
00000180h: 13 22 22 22 01 01 27 24 24 24 38 18 30 0D 0D 0A ; ."""..'$$$8.0...
00000190h: 38 10 30 38 20 30 18 18 10 08 18 30 30 37 30 18 ; 8.08 0.....0070.
000001a0h: 18 20 08 08 10 20 28 30 20 20 30 00 10 30 08 10 ; . ... (0  0..0..
000001b0h: 10 18 20 20 20 28 20 28 30 30 08 10 00 28 28 30 ; ..   ( (00...((0
000001c0h: 18 10 10 10 18 10 20 18 20 10 20 30 00 00 00 00 ; ...... . . 0....
...

Logo1.bin:

Code:

00000000h: 49 43 4F 4E 04 1D 00 00 04 00 00 00 00 23 00 13 ; ICON.........#..
00000010h: 00 13 00 00 15 75 70 69 57 22 35 1B 2C 4D 3E 43 ; .....upiW"5.,M>C
00000020h: 60 7C 00 EE EE EE EE EE EE EE EE EE EE EE EE EE ; `|.铑铑铑铑铑铑?
00000030h: EE E0 EE EE EE EE EE EE EE EE EE EE EE EE EE EE ; 钹铑铑铑铑铑铑铑
00000040h: E0 EE EE EE EE EE EE EE EE EE EE EE EE EE EE E0 ; 囝铑铑铑铑铑铑钹
00000050h: EE EE EE EE EE EE EE EE EE EE EE EE EE EE E0 EE ; 铑铑铑铑铑铑铑囝
00000060h: EE EE EE EE EE EE EE EE EE EE EE EE EE E0 EE EE ; 铑铑铑铑铑铑钹铑
00000070h: EE EE EE EE EE EE EE EE EE EE EE EE E0 EE EE EE ; 铑铑铑铑铑铑囝铑
00000080h: EE EE EE EE EE EE EE EE EE EE EE E0 EE EE EE EE ; 铑铑铑铑铑钹铑铑
00000090h: EE EE EE EE EE EE EE EE EE EE E0 EE EE EE EE EE ; 铑铑铑铑铑囝铑铑
000000a0h: EE EE EE EE EE EE EE EE EE E0 EE EE EE EE EE EE ; 铑铑铑铑钹铑铑铑
000000b0h: EE EE EE EE EE EE EE EE E0 EE EE EE EE EE EE EE ; 铑铑铑铑囝铑铑铑
000000c0h: EE EE EE EE EE EE EE E0 EE EE EE EE EE EE EE EE ; 铑铑铑钹铑铑铑铑
000000d0h: EE EE EE EE EE EE E0 EE EE EE EE ED EE EE EE EE ; 铑铑铑囝铑铐铑铑
000000e0h: EE DE EE ED EE D0 EE EE EE EE EE EE EE EE EE EE ; 钷铐钚铑铑铑铑铑
000000f0h: EE EE EE EE E0 EE EE EE EE EE ED EE EE EE EE EE ; 铑铑囝铑铑眍铑铑
...

I am not good at image format. Could someone give a hint, with what tool I can convert conventiional image formats into this one. I know you can use PBE 2 to change splash screen. But with my PBE 2.2 it has only Palette and Script section, I can't change any part of the splash screen. So I have no idea now, what could be done about this odd logo format...