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

[TimeWalker]

-FD identical
-ME (v7 part) identical
-BIOS is not identical.. there are changes in regards to EVSA. I've seem this name mentioned in WinFlash changelog.
But on a positive note the file you took with universal bios backup tool has zeros on these places while the actual dumped bios has NVRAM runtime variables (like service tag, express service code, boot order, boot entries, hdd passwords etc.) in this place... so you are all good!

[kasar]

great!

green light then ^^

time to pick the soldering tool again, if the laptop boots again and it have the stuff unlocked this will be a real acomplishment

thanks for your support man!

[TimeWalker]

Go on then.
Hope it actually lets you flash entire v8 ME thereafter.. otherwise there's no really a point to unlocking this thing :S

Will assemble a dump from the one you have provided to integrate ME v8 into both ME sectors... but I don't feel like you will be attempting any more magic on this chip in case software method of flashing v8 fails .. otherwise traces on the mobo may get lifted and that won't do you any good.

Edit:
There you have it: http://www.mediafire.com/?ahgv0vanv7zh177
1000h - 17FFFFh replaced with v8 firmware.

[kasar]

yeah, that was enough for me using this method

to much headache just to change 4 bytes


well, soldering went fine, aparently I didnt broke any leg or damaged nearby eletronic components, also tested with multimeter and it seems properly conected.

now the final step, asembly the laptop and report results ^^

thanks for the firmware

but well, not sure how I will flash it without doing all the suicidal thing again

time to pick screwdrivers and reasembly stuff!! ^^

[kasar]

posting from the l502x




success!

now your turn to unlock your descriptor settings

[TimeWalker]

Uhm .. actually use MEInfoWin to check whether it is now unlocked. This proves nothing, just reads the values from 0x60h

FW Capabilities: 16784480

Intel® Anti-Theft Technology - PRESENT/ENABLED
Intel® Capability Licensing Service - PRESENT/ENABLED
Protect Audio Video Path - PRESENT/ENABLED

Level III Manageability Upgrade State: Not Upgradable
CPU Upgrade State: Upgrade Capable
Cryptography Support: Disabled
Last ME reset reason: Power up
Local FWUpdate: Enabled
BIOS and GbE Config Lock: Unknown

Host Read Access to ME: Disabled
Host Write Access to ME: Disabled

[kasar]

[TimeWalker]

aaand there we have it congrats, the operation was successful.
now try and flash this 8.1.0.1286 onto your ME region.

[kasar]

errr, but if I flash it, dont it will brick my machine?

as far I know me7 is needed for the sandy bridge machines, and me8 for the ivy, right?

edit: wich file?

[jkbuha]

Awesome work mate! Rep & Respect!
I'm at a wedding this weekend so won't have time to catch up with everything you've done, but let's get a HOWTO guide once ME8 is flashed and unlocked

Re: Unlocking the overclock+undervolt settings I believe we still need to run the ETID utility to enable the respective bits. I'll have a look once I get back to a machine...

Great work again!

Sent from my HTC One X