(UEFI) Dell XPS 15z L511z modded BIOS - and HOWTO

[jkbuha]

well, I didnt had sucess while trying to include the newer vbios firmware. just with the stock firmware, saving the file with nbitor didnt helped, did you had to hexedit something manually? (I just used nbitor at the vbios), the problem is that flashing your vbios even unmodified didnt worked for me, something must be wrong.

modifing the OLD/stock firmware with nbitor was the only thing wich worked for me,
if you can share al the steeps you did to be able to flash the newer firmware update with more info, such as screens, hex positions, or more, I would be greatly pleased.
really interested at the new firmware update.

yeah, we definitly need propper recovery process, I think we are playing too much with the risk factor, and something can be easly goes wrong, specially when we are flashing several times daily, I just consider me lucky (for the moment)

I hope ahmed or others will give us a hand with that.

I didnt had so much luck with phenox bios editor, got seeveral errors while tryong to open the bios, "invalid rom lenght" were the one I got more frecuently, if you have more luck, let me know plz ^^

about the 2d 3d profiles, yep, I modified the fermi voltages

refering the 2d , I modified the P3 and P7 perfmodes
and for the 3d one I modified the P15

is this correct?

I've attached the settings I used. Basically - if you cannot flash a non-modified vbios file (with new firmware) but you can modify existing firmware then i suspect there is a problem with the newer firmware not working on your hardware. I could be wrong though - let me know if my settings work.


  PhoenixTool.jpg (Size: 251.82 KB / Downloads: 47)

I think you're right about PBE. I also suspect our BIOS is PhoenixAward in which case it most likely needs to be modded with Award s/w, not Phoenix. @Ahmed - do you have any insight on this?

Yes the Fermi voltage settings are correct. That said it would be good to run some 3Dmark tests on both 2d and 3d to determine if (1) the VID is correctly set at 2d/3d (2) there are no issues with undervolting

Cheers
jkbuha