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

[kasar]

ok, here is the instructions kapax7

gave to me in order to customize logos

There's a software called file scanner, get it here.
http://sourceforge.net/projects/filescan...p/download
Open up the logo rom above with this! Then it shows all the JPG images inside the Rom, and shows each one of them and their boundaries in hex!
My mistake was to extract the whole Logo image and then try to make a logo image in that size!
that led to a black logo screen!

The second time I looked at JPG segments carefully and studied a little about JPG file sections!
Then decided to only replace the hex code of some sections of the rom file!!

So I made that logo and then replaced these parts from the Logo with the original logo inside Rom.
Huffman table
quantization table
and finally Scan area

So open your Rom file in filescanner and remember the hex code of the beginning and the end of each section then open your custom logo in filescanner and also remember the start and end of each section.
Then open both the rom file and logo in a hex editor and replace each section with that of the custom logo!
Both huffman and quantization tables of both logos are the same size! the only difference is the scan area of those logos.
So you must make a logo with equal or less size than the Dell logo. making equal is nearly impossible, but try to make a smaller logo in size and fill the end of the file with zeros until they get equal

Also remember that the logo should be gray scale ....

while testing

mmm, I had sucess, however, something definitly went weird




as you can see, my logo is working finally, however, some stuff is definitly weird.

take a look to Kpax7 logo mod



the progress bar and F2 and F12 shortcuts images are there, however in my case, they are gone, that could be comprensible if I did something wrong, but ...... the intel logo is what really annoys me

where the heck it is being loaded? there are not a single intel image at the entire logo module!

what kind of sorcery is this?

[TimeWalker]

Looks like you corrupted the module so every text imprint is gone. The images are there however. The Intel logo may have a different source of appearance.. As I've mentioned at NR forums my new board now has extra logos which neither of them were there with the old board.

Also, it seems like the most important bit of info is missing - which is the logo rom GUID lol.


Edit:

Silly me .. thats the one:
DellSplashLogoDxe.efi 0C7F41A9-0A6F-43F6-A0D9-1E2D01DBD7BE_4_1122.ROM
Sent from my GT-I9070 using Tapatalk

[Kpax7]

A quick tutorial was added to the notebook review topic ...
Take a look.

[t6590]

hello its been a while since i was here. need help. i accidentally flashed my bios back to its default and now cant boot coz hardisk is GPT. how can i fix this or is there a way to flash bios back to the modded version from usb.

[t6590]

never mind solved!

[jakebour]

anyone successful dual booting mavericks (or 10.8) and win7 while running this in eiterh EFI mode or BIOS mode? Everytime I tried it was either one or the other and still needing usb do get OS selection. Any guide out there?

[Brabbelbla]

Hi guys,

Earlier today, I spotted the universal IFR extractor, and I released it on the setup modules, to see if there were any things left that were not yet unlocked. In the IFR extract, there were entries for features already spotted in the text strings in the modules. Among possible others:

PlatformSetupAdvancedDxe:
- Express Charge (some Dell feature, with note that it may not be available for all batteries)
- RPB (no idea what it is)
- Intel AMT (remote control, apparently requires special hardware, doubt it is present)
- RAID!

SystemSetupSecurityDxe:
- Changing the service tag (wut?)
- Some TPM stuff (but if there is no hardware present, yeah...)

The only thing I really liked was RAID.

The RAID suppression part of the extract:

0x35188 Suppress If: {0A 82}
0x3518A Question Ref: 0x0 {40 84 25 27}
0x3518E 64 Bit Unsigned Int: 0x2 {45 0A 02 00 00 00 00 00 00 00}
0x35198 Not Equal {30 02}
0x3519A End {29 02}

I went on changing the not equal (30 02) statement to equal (2F 02) to have the RAID entries show up, under HDD Configuration -> Software Feature Mask Configuration. I haven't tested it, don't know if the entries actually DO something, as the machine was in crisis mode and anyway I don't really want to mess with my HDD's, there is important data on them. As far as I could see, all RAID modes can be enabled at the same time, which I think is weird. But I thought I'd share anyway. Unfortunately for me, should I ever buy an SSD, there was no mention of Intel Rapid Start Technology at all.

[kasar]

thanks for the info

I replicated that on mine and it definitly works


do you have the suppresion parts for all the other items on your list?


because some of those features seems also interesting

edit:

wich laptop bios did you modded?

L502X, L702X?


also, how did you managed to get universal IFR extractor working for you?

it crashed for me while loading both L502X and L702X advancedsetup modules

[Brabbelbla]

L702X, that is my machine. Strange about the extractor... for me, it worked straight away. Just to be sure, the version I used is in the attachment, together with the (L702X) extracts for AdvancedSetup and Security. How/where/when does it crash?

[kasar]

tested your version, the executable is 1 kb bigger than mine, however, it still crash

running win7 ultimate x64, the app works fine while opening, selecting the file , after click on extract, it ask me for the output location txt file and name.

I click ok, and then, windows shows the "app stoped working dialog" no txt file there

tried with easier paths and names without spaces, no luck too.



what OS are you running?

well, since the app seems to be working for you.

you may be able to run it on my l502x a12 modules

here are both advanced and security modules, if you can send back the app output txts for them I would be so happy