Good day.
Please, help me to replace Logo.
BIOS and new wallpaper:
https://drive.google.com/drive/folders/1...sp=sharing
Board: Kontron COMe-mBT10
I have tried to use PhoenixTool and UEFITool.
PhoenixTool found logo only in Padding_1476.ROM.
I tried insert my wallpaper with HEX-editor, but I received only black screen.
UEFITool found EVSA entry "SplashLogoPackage".
I think, I have to replace its body header, but I don't know, What I should write.
Body header:
3566 - size
00060C0000000000000018 - constant part of all version BIOSes
E816 - important part (may be checksum)
0000 - constant part
Maybe Someone knows, What does Important part mean?
Hi~
You said you got a blackscreen after you flashing your mod.
Some questions ,the blackscreen is only during boot logo but it can boot normal and going to os? or it's look like a bios bricked?? ,because i saw some word about rsa signed.
(10-05-2020, 09:46 AM)genius239 Wrote: [ -> ]Hi~
You said you got a blackscreen after you flashing your mod.
Some questions ,the blackscreen is only during boot logo but it can boot normal and going to os? or it's look like a bios bricked?? ,because i saw some word about rsa signed.
Blackscreen is only during boot logo. Device boots normal.
edit
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sorry ,I think it need to check again , i don't find where the checksum is.
Question !if you transform your logo from jpeg to gif and inject it then change file size in hex then re-flash ,does it black screen still??
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Here is i tried to inject new logo into you provided bios ,you could check it at first.
https://katfile.com/n4zawvutuwb9/MVV1R316_1.bin.html
(10-05-2020, 11:06 AM)genius239 Wrote: [ -> ]edit
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sorry ,I think it need to check again , i don't find where the checksum is.
Question !if you transform your logo from jpeg to gif and inject it then change file size in hex then re-flash ,does it black screen still??
=============
Here is i tried to inject new logo into you provided bios ,you could check it at first.
https://katfile.com/n4zawvutuwb9/MVV1R316_1.bin.html
Thank you. But...There is only black screen, no booting.
BIOS stopped at code 00.
so , i think it contain a rsa signed but you said that you can re-flash and normally boot ,i'm very curious.
tip: E816 is not checksum is png file's file size.
So ,do you have checked my mod at first?
edit
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Sorry ,it should gif file not a png file.
What's code00 mean in this machine? maybe you could try do clear cmos.
(10-06-2020, 03:44 AM)genius239 Wrote: [ -> ]so , i think it contain a rsa signed but you said that you can re-flash and normally boot ,i'm very curious.
tip: E816 is not checksum is png file's file size.
So ,do you have checked my mod at first?
I checked with gif file, sorry. I added TTS-1024Grey-1.gif to drive.google.
I added kontron.gif also for comparing.
E816 doesn't match with gif's size. Do I have to convert inserted gif file to png?
I don't know, what code 00 mean. I have reserve memory for BIOS, so I can reflash it.
It's my mistake. I supposed, that there is only 1 gif in Padding_1476.rom
I replaced logo succesfully.
Genius239, many thanks for your very important tip!