Anyone know how to extract a Dell bios from the ****.exe?? How to modify the ROM?

Tried again, same result this bios has always been problematic, even concerning fan control and other things, probably because the even the GPU bios is embedded in the pack.

 

You need to login to view this posts content.

 

You need to login to view this posts content.

 

You need to login to view this posts content.

 

At least it isn't messing it up, deleted that file as well, I will try having a better look...

 

Please may I ask you shakeyplace....

Will the Latitude D820 BIOS be possible to mod because the D830 was?

What I mean is, although I am waiting for some kind person to do it what I want to know is that it's actually POSSIBLE to do it?

....or should I give up hope hehe

You guys are doing a great job. Keep up the good work you'll become infamous!

 

You need to login to view this posts content.

 

You need to login to view this posts content.

 

XPS M1530 BIOS mod not working.

I'm actually very curious why it seems to work for some and not for others.

But keep the good work up

 

You need to login to view this posts content.

 

Dell bios are not set the same way and you must search where the slic table is located, if there is hidden bytes or not and checksum sometimes does not give fffffffff (maybe too many or not f) So you must modded them differently

 

Hi everybody.
Glad to see that the show is going on
I'm awfully sorry, I have very little time to fullfil mod requests, so please don't ask via pm.
Just read the thread and do it on your own or wait when a mod for your model appears.

But I'll definitly try to help if an unintelligible situation occures, so feel free to ask questions.

One more thing. When you try to mod a bios for your machine, you extract the .hdr file and open it in winhex. At this point don't hurry to modify it.
Have a look at the code, try to understand how many roms are there, locate the control bytes. They sometimes located at 200054, sometimes at 100054. Check crc32 of the whole file, it must be ffffffff. Check crc32 of the rom with control bytes, it must be ffffffff also.
And now, when you've "become familiar" with that damn code, try to do what you want.

Good luck

 

In this case, I suspect that the dell utility that creates the windows flash file just doesn't support that model? It seems to me that it just isn't flashing. Same type of bios as the others, from the experience of the past 24 hours I think it should work. I corrected the length bytes, fixed the hash checks, modded using the same methods and the bios appears to be in the same format....
If the Dos attempt won't flash then perhaps it will at least present us with an error?

 

You need to login to view this posts content.

 

You need to login to view this posts content.

 

It is possible that the DCCU doesn't work for some models. Technically it is only supposed to be used for Latitude, Optiplex and Precision models because those are Dell's "corporate" lines. That's why I wasn't sure it would work on my XPS machine (it's from the consumer line).

For this model that won't flash using DCCU update package, does the original .exe have the readgzfile switch? That could be another option that would help prove whether or not DCCU only works for some systems and not others.

 

If you can't flash with your Dell BIOS exe using the -readgzfile switch, you can try using Ubuntu (or other linux) with dell bios tools. You can use the hdr file to flash.

 

I noticed my bat file shows "DXP061-020503 -readgzfile". What should it be if that isnt the right command?

 

Many thanks kind Sir !!!!!!!!!!

 

You need to login to view this posts content.