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(UEFI) Dell XPS 15z L511z modded BIOS - and HOWTO
kazard i am tented to solder a new bios and use a bios saver.

How long it take to get bios chip ?

Should I remove all the motherboard ? Or should I get it with minimal modification ?

Have you identified the LPC port ?
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@broucaries - I've looked at the linux error code and it seems that it could just be a BIOS setting. Did you try and change the ACPI states (and also enable 3.0 states) to see if the error goes away?
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(08-27-2013, 07:28 AM)jkbuha Wrote: @broucaries - I've looked at the linux error code and it seems that it could just be a BIOS setting. Did you try and change the ACPI states (and also enable 3.0 states) to see if the error goes away?

I have enable all possible states and set bios to auto.
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@jkbuha

well, sadly I have to OC from windows using intel XTU and my intel ME patch, sadly no bios overclocking yet.

(08-27-2013, 07:26 AM)broucaries Wrote: kazard i am tented to solder a new bios and use a bios saver.

How long it take to get bios chip ?

Should I remove all the motherboard ? Or should I get it with minimal modification ?

Have you identified the LPC port ?


not sure if you mean hazzard or kasar, because there is no kazard user in this forum as far I know so I will reply ^^

take away the bios chip from the mobo depends how good you are with electronics.

you need get take appart the whole motherboard out the case in most cases, since the bios chip isnt visible into the laptop expansion bays usually

not sure what do you mean with the LPC port.

you have more info about how to desolder and solder the bios chip from the L502X laptop here:

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

look at the last section of the first post (more advanced mods section)

keep in mind that if you use other laptop than the L502X, you will not be able to use my ME patch since it will probably brick your laptop.

the chip and or chip location will probabl differs too
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Oh the [censored] at Intel, I've specifically bought a GA-H87 board because they enabled OC with latest bios release and now they push a uCode update to block it.. At least I haven't invested in a K-marker CPU yet and opted for an S-marker to save energy..
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(08-27-2013, 11:22 AM)kasar Wrote: @jkbuha

well, sadly I have to OC from windows using intel XTU and my intel ME patch, sadly no bios overclocking yet.

(08-27-2013, 07:26 AM)broucaries Wrote: kazard i am tented to solder a new bios and use a bios saver.

How long it take to get bios chip ?

Should I remove all the motherboard ? Or should I get it with minimal modification ?

Have you identified the LPC port ?


not sure if you mean hazzard or kasar, because there is no kazard user in this forum as far I know so I will reply ^^

take away the bios chip from the mobo depends how good you are with electronics.

you need get take appart the whole motherboard out the case in most cases, since the bios chip isnt visible into the laptop expansion bays usually

not sure what do you mean with the LPC port.

you have more info about how to desolder and solder the bios chip from the L502X laptop here:

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

look at the last section of the first post (more advanced mods section)

keep in mind that if you use other laptop than the L502X, you will not be able to use my ME patch since it will probably brick your laptop.

the chip and or chip location will probabl differs too
LPC is low pin count. it is a bus behind the superio that go to the bios.

I own a L502X so no problem.

Bastien
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I dropped my L702X. It fell. Screen broken. Being repaired. That brought me to attach a display to the mDP port, for troubleshooting purposes. Which worked, so I can now confirm that the mDP port works with the modified VBIOS.
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Hi all

Been a while since I posted so apologies; have been working on other projects.

I think it's high time we upgrade our ME fimware; a quick google shows the latest is 7.1.70.1198; has anyone seen this in 1.5MB flavour?

I have an opportunity to open up the 15z and experiment with shorting some pins to enable the descriptor unlock; let's try one other shot at unlocking the ME Smile
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oh, finally some activity here Smile

so,another version of the ME firmware got relased? Smile

I didnt know ^^

will you just short the pins, or you will also dump the whole chip using a programmer?

having that dump saved my a-ss several times .)

I also can help you with the ME firmware modding.

ME firmware version update doenst need unlocked descriptor,I already did before desolder that chip.
it can be done with the executable included in my L502X thread at NBR.

however, enable overclocking and tweak with the firmware parameters need unlocked descriptor, you also will need FITC to edit it.

procced very carefully, bad FITC parameters on the firmware caused some bricks on my system, and since the bios recovery CDrom doesnt recovery or flash the ME section, the only way is reflash the chip externally with a programmer if things go wrong
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Sorry kasar - been working more on the OS side these last few weeks, but it's now time to go back to basics Smile

Yes the latest version of ME has been out for a while but I can only find the 5Mb version. If anyone has the 1.5Mb we can give it a look to see if it works.

I'm planning to short the pins for now; in a nutshell I'll be changing the battery and upgrading the RAM and as dismantling the 15z is a pain in the a$$ I was going to short the pins as well seeing as I'll be going through the hassle. Problem is I'm not sure which pins to look out for (I know it's close to the ALC269 but that's all) so any help would be appreciated.

Yes I remember what we went through with badly programmed FITC - but as long as we are careful we will succeed Smile
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