@powerox

Yes.

so how can i get back to the original one ... editing the image-file?

Use a backup image if you have it.

unfortunately i didn't create one :-(

Yes, due to MAC address was coded in the file you sent me, thus into the file I sent you back. Check on the board for a sticker on, near, or around the LAN on second machine and I can fix new BIOS for you.
Usually there is sticker around the LAN somewhere, sometimes on side of metal module too so you might need to remove board from case to get good look (Or on back of board on sticker sometimes too)

Before you write over any BIOS, on any board, with any method, always make backups.

at least i do have a good inventory :-)
that shows that the mac-address is supposed to be the following => 00:23:24:47:A3:BC

Very nice you have found it quickly! Here is new BIOS for that machine, if you have a third give me MAC for it before you flash so I can make 3rd BIOS too
https://nofile.io/f/1fmqXDNtHmY/outimageMAC.zip

i used the bios from the link you send me ... but the mac-addrress stays the same
i compared the two image files with a simple diff - and they differ, but the different mac does not show up
tried to disable and re-enable the ethernet adapter, but this did not have any effect

The command I gave you to use in post #25 only write to the ME region (not where MAC is stored), so this would always fail. Sorry for not giving you updated command to flash

The other stayed correct because you only flashed the ME region and we were using it's own BIOS as source, I am unsure how you got wrong MAC address onto this second system if using the flash ME command only from post #25 to begin with?

Be 100% sure you are using the BIOS I sent you in post #37 and use this command, this will rewrite the GbE Region where MAC is stored.
fptw -rewrite -gbe -f outimageMAC.bin

Sorry, I just noticed this, the MAC is kept in 5 locations in this BIOS, that's crazy too many! I only sent BIOS with change to the one normal location (GbE region), but above command you showed in image would have always failed to fix MAC anyway since that only writes the ME region and MAC is not stored there (?).
Checking now, maybe MAC is stored one of the fives times in ME?? (Nope, but close)

Here, use this new BIOS and the command that follows, to rewrite the entire BIOS - do not use this command or file, this will overwrite system 2 with all of system one unique details, leaving here only in case it's needed later (Doubt it)
https://nofile.io/f/HJwuH3c6h6A/outimageMAC2.zip

fptw -f outimageMAC2.bin

WAIT _ DO NOT USE ABOVE file/command!

OK, few things here, before you do anything else to this system run the following command on it, hopefully we can get a backup with the systems details (UUID, serial etc) in case you need later to correct things.
fptw -d -backupsys2.bin

The above command you ran shown in image at post #38, should have only written the ME Region, which does not contain MAC address.
However I suppose maybe the -rewrite caused this due to close location of the second MAC address storage @2000h, actual ME starts @3000h in the BIOS but possibly maybe it shouldn't have/didn't originally, I am not sure how the above issue would happen when only flashing ME region so only guessing.
That is probably the source of the problem though, -rewrite -me instead of just using -me

Now, use this BIOS only, and ONLY with the command below, to see if this fixes the issue or not. MAC address corrected in this BIOS only at 1000h / GbE and at 2000h - pre ME region (Looks like a second GbE entry)
The rst of this BIOS still has incorrect MAC and system info, so only use -ME flag in FPT same as you did above, and do not use this for a full FPT write
https://nofile.io/f/gPhr6k3Sr1k/outimageMAC3.zip

fptw -rewrite -me -outimagemac3.bin

Or, if you want to be 100% certain of what happened, before writing anything else, please run the above backup command I mentioned (fpwt -d backupsys2.bin) and upload dumped .bin file here for me to look at, then I can give you exact cause and perfect fix file/command.
This is probably best solution, I would advise doing it this way so we get it right in one step!

Hey guys,

I'm in a similiar situation. I have a bricked M92p. I dumped the "bad" Bios with sop8 clip and USB programmer, but they Binaries are 2 and 8 MB. Can you please upload the files you have bene using. Unfortunately they are gone from the hoster. Thanks!

DEAR SIR,
MY machine M82 Sff(33951B3) have same problem ,But https://nofile.io/f/gPhr6k3Sr1k/outimageMAC3.zip already lost can't download anymore, can you help me fix it

this attach file download from my machine