Change serial no in AMI BIOS?

[sadada]

Hi,
I have two Panasonic toughbook CF-31 with AMI BIOS. One with locked BIOS, another on is OK. I used afudos to dump rom file from that unlocked one, and flashed bios on that locked one with that rom file. There was an error-wrong rom id, bu I used switch /x to ignore it. After flashing BIOS is unlocked, everything works, but serial number in BIOS is incorrect. BIOS shows serial number from laptop that was without BIOS password. I tried many programs to change serial, but non of them does work. 
I read that DMIEDIT should work but I cant find link for download.
Does anyone have that program or some other idea?

[heltrix]

Hi!
I think that you can try read article and use 2 link from this article: http://blog.asiantuntijakaveri.fi/2012/0...l-and.html

[sadada]

I found DMIEdit but I can still change the serial. I changed it, updated, it says updating OK..looks like everything is OK, but when I restart and get into BIOS there is still wrong/old serial. 
I tried to change serial on the unit where BIOS was without password, where I didnt do anything about BIOS and problem is the same. Everything updated/changed, but when you get into bios nothing is changed there.
What am I doing wrong?

[sadada]

Hi!
I think that you can try read article and use 2 link from this article: http://blog.asiantuntijakaveri.fi/2012/0...l-and.html

I tried that program few days ago, but didnt work. Actually it says "done", and whei I run again amidedos /ss it shows the new serial, but when I restart and get into bios nothing changed...

[sadada]

I probably use wrong version of DMIEDIT so I cant change it that way. After I change serial in DMIEDIT and read bios rom file again, open it in hex editor I can see that new number, but it is probably in wrong location so bios cant read it.

If you open BIOS rom file in notepad++ you can see first 5 characters of serial and two more some characters. Those two characters represent last five digits of the serial. 

So this is the procedure:
- read ROM file from locked bios, open it and find serial number (7 characters - 5 are OK, 2 are encrypted).
- open ROM file of unlocked bios, replace serial numbers (I found it 7 times in file) with the serial from locked bios file. Replace all 7 characters.
- save and flash bios with that file of unlocked bios. 

Now, bios is unlocked, serial number is from locked bios, and it is OK.

I get error before flash bios that ROMID is different, but there is switch /x to ignore it. Maybe someone know how to fix it?

If some have some suggestions please write.

[kecho]

Last 2 characters are not encrypted. They are in hex, reversed.