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

[backberry4311]

hi all, i'm newbie here
Just a small couple of questions:
-the attach wph file in first post have all step to mod from first time until now ?
-where can i get the winflash.exe ?

thanks
black

[jkbuha]

You will need to get winflash.exe from the official Dell bios update package for the 15z. The WPH in the first post is all you need, and seeing as this is the first mod it is strongly advised to apply the /cvar parameter as well with winflash.exe

*NOTE* If any of the above sentence does not make much sense (and I suspect it is the case if you don't know where to get win flash by now) then you are strongly advised (i) to re-read the topic and subsequent 180 pages, or (ii) not to try this mod as you may end up bricking your XPS L511z.

[backberry4311]

You will need to get winflash.exe from the official Dell bios update package for the 15z. The WPH in the first post is all you need, and seeing as this is the first mod it is strongly advised to apply the /cvar parameter as well with winflash.exe

*NOTE* If any of the above sentence does not make much sense (and I suspect it is the case if you don't know where to get win flash by now) then you are strongly advised (i) to re-read the topic and subsequent 180 pages, or (ii) not to try this mod as you may end up bricking your XPS L511z.

hi jkbuha

so if i use the second wph file, the command should be
winflash.exe /BIOS /EC /SA /SV /BBL /CVAR "BIOS1_A12_SPEEDSTEP_UV_FULLMENUS_INTELv2170_UCODE_029_PLOP.WPH" ?
is that right ?

[jkbuha]

Yes that's correct.

[backberry4311]

Hi jkbuha

thank for helping me, my bios unlocked now, and currently my vga card work better than i think
i will take screenshot about it later.

Thank you so much ^^

[jkbuha]

you're welcome - glad it worked out well

yes maybe it's the placebo effect but even I noticed a difference in performance between the default v2104 and the newest v2170 driver.

[themacmeister]

This is amazing news. Do you think this would be possible for Acer Aspire 4752 laptop, using TianoCore Secure BIOS. Not having UEFI support means no GPT hard drives

I guess all I really need is the first advanced menu to enable everything myself.

I am prepared to send you any files you require. I have a stale request languishing on another thread. Many thanks for your brilliant work so far with Dell !!!

[jkbuha]

Most (if not all) of the steps to enabling the advanced menu are on the first post. Should be everything you need to unpack/patch/repack the bios. The TianoCore SCT version must be 2.0, in which case you should be able to find the binary sequence outlined in the first post and patch accordingly.

Good Luck!

[gmb-gus]

Any news on L502x unlocked bios?

[kasar]

Any news on L502x unlocked bios?

@gmb-gus

this topic may interest you

http://forum.notebookreview.com/dell-xps...-more.html


@all

happy 2015 guys, do you all still alive?

I am trying more mods for the system.

now I am trying to mess with the turbo multipliers

I noticed some machines let you to handle the turbo multipliers so you can turn them higher for all cores

I'm currently looking for doing that for my i5-2430m

by default it allow

multiplier to 30 - 1 core
multiplier to 28 - 2 cores

I want to max them the highest posible.

if I cannot pass 30, then I want to at least being able to set two cores to 30.

I read that I have to mess with the MSR registers for that.

I was thinking about several options:

* mod default values in BIOS (relating overclocking menus we were unable to unlock), even we cant bring up those menus, we may be able to change the options by manually hex editing the code, or via a efi application from the shell wich does the trick.

* hardcode the changes to the bios so they are allways there.

* replace some "useless" bios options with another ones more usefull, like the overclocking ones

from what I read it have something to do with this address

MSR 0x1AD , this can be done from windows with msr tool software but,
I also read that
MSR 0xce bit 28 must be set to 1 for that
and that needs to be bios set.


with MSR tool I get following

0x00000000 0x1C1C1C1E

wich result into

1C = 28 multiplier - 4 cores active
1C = 28 multiplier - 3 cores active
1C = 28 multiplier - 2 cores active
1E = 30 multiplier - 1 cores active

and I want to set it to

0x00000000 0x1E1E1E1E

but the changes I make from the MSR tool seems to be useless

so I think that I need to unlock the 0x1AD MSR register, wich seems controlled from the 0xce bit 28

any idea about how I can acomplish this?