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(UEFI) Dell XPS 15z L511z modded BIOS - and HOWTO
(02-23-2015, 03:20 PM)Brabbelbla Wrote: @cutecool
Hi Smile A guide for what?

@determo13
Point is that how easy porting "every module related to RAID etc." may sound, me being (actually in the process of becoming) a scientist, vagueness in general is something I hate to work with. I'd like to help you, but to do what you say would make me manually sort out the differences between the L502X and the L702X for every module. If you want to get that done, I encourage you to do it, and I will try to help you in using the results. Seeing AMI's sources, different parts needed for RAID functionality are implemented in different modules, so to do anything I believe in I like to have an overview of the differences.

wow u guys are really amazing, was reading few pages, i was just wondering do i have to read all the pages or else, by directly flashing the file in OP will help.

i have dell xps 15z i7.
i was getting same out put as mentioned in OP, i think my n OP machine are same.
( Do a HEX search to find the desired files in the DUMP folder to view/patch. In my case I was looking for my VBIOS, so I searched for NVIDIA and voila! my VBIOS rom appears in the file 8C8BAE9C-4AEB-44DF-AB67-1E4D8242E964_1_xxx.ROM. ) this is what i meant.

i stopped in between thinking if i go work anywhere i might brick my Laptop, so i was wondering if there is any easier procedure.

i am sorry if i am sounding lazy, but i really adore your hard work team..
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Does the 15z have an SATA 3 controller or SATA 2?

I was thinking of picking up an SSD (Crucial MX100), and I know it'll work regardless, but I'm curious if the drive write speed will be limited (if the system only has SATA 2).
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@cutecool - you can test your changes with recovery procedure (at least that your laptop is able to boot with moded firmware, which means you are guaranteed be able to flash stock bios back). You can find details about recovery procedure somewhere here in a
thread (use search Smile )

@thorbsd - AFAIK it has SATA-3 controller which has 2 ports SATA-3 and 2 ports SATA-2 - internal drive port is SATA- 3 , optical drive port is SATA-2
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I'm just configuring a DAW build for my l502x. I'm reading that disabling usb power mgmt can increase bandwidth, and that 'disabling c-state transition' can prevent errors from processor speed changes.

(assuming this option isn't usually available...) Is the c-state transition option provided with the (unlock menus) l502x BIOS MOD?
Are there any known issues/pitfalls?

If I achieve this, is it possible to control the c-state transition 'per-build' (ie,only enable/disable via reg on relevant build)?

Many thanks
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(03-03-2015, 09:16 AM)follow_me Wrote: @thorbsd - AFAIK it has SATA-3 controller which has 2 ports SATA-3 and 2 ports SATA-2 - internal drive port is SATA- 3 , optical drive port is SATA-2

Thank you! I'm looking forward to getting an SSD in this machine!

@jkbuha
Do you happen to have a version of the updated 15z firmware you have on the first page that doesn't include the PLOP Boot Manager? I ask because I noticed that kasar mentioned some trouble with it back on page 177 (https://www.bios-mods.com/forum/Thread-U...4#pid77074).
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@Jonny-Dell-XPS-l502x
The c-state transition options (there is more than one available) are in the advanced unlocked menus
Prebuilt option state is not possible at the time , maybe latter it will be
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Hello,

Could you please advise if it is possible to modify bios (e.g. A12) to run 15z with non-Dell battery inside?
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Sure thing - here you go. Standard Network Boot menu.

Let me know how it goes!


Attached Files
.zip   15z_A12.zip (Size: 1.92 MB / Downloads: 28)
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(04-03-2015, 12:03 PM)jkbuha Wrote: Sure thing - here you go. Standard Network Boot menu.

Let me know how it goes!

Working great! Thanks!
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(04-03-2015, 05:01 AM)econlt Wrote: Hello,

Could you please advise if it is possible to modify bios (e.g. A12) to run 15z with non-Dell battery inside?

If this is not possible I will go for refund and get back with Dell battery. Just curious if there is any workaround.
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