Develop Bugs

[Q] Windows 10 for Lumia 520

I have read that many Lumia users were able to install Windows 10 on unsupported phones but it doesn't seem to work for me in Lumia 520. I either get 'Server Error' or 'no builds'. What is it that I have done a mistake and how can I install Windows 10 on my 520?
P.S. I'm not an expert so I need step-by-step method.

Gautham0123 said:
I have read that many Lumia users were able to install Windows 10 on unsupported phones but it doesn't seem to work for me in Lumia 520. I either get 'Server Error' or 'no builds'. What is it that I have done a mistake and how can I install Windows 10 on my 520?
P.S. I'm not an expert so I need step-by-step method.
Click to expand...
Click to collapse
+1
Sent from my GT-I9300 using XDA Premium 4 mobile app

Gautham0123 said:
I have read that many Lumia users were able to install Windows 10 on unsupported phones but it doesn't seem to work for me in Lumia 520. I either get 'Server Error' or 'no builds'. What is it that I have done a mistake and how can I install Windows 10 on my 520?
P.S. I'm not an expert so I need step-by-step method.
Click to expand...
Click to collapse
if you not expert, maybe Win TP not for you?

look here
http://forum.xda-developers.com/windows-10/general/howto-install-windows-10-phones-t3030105

You have to use a custom certificate to trick the app into thinking you're on a different phone that has official Windows 10 support.

This tutorial worked for me
Gautham0123 said:
I have read that many Lumia users were able to install Windows 10 on unsupported phones but it doesn't seem to work for me in Lumia 520. I either get 'Server Error' or 'no builds'. What is it that I have done a mistake and how can I install Windows 10 on my 520?
P.S. I'm not an expert so I need step-by-step method.
Click to expand...
Click to collapse
Hi, here's a tutorial, which worked for me, but it is German. You'll probably understand it by watching the video. http://wparea.de/2015/02/windows-10...nterstuetzten-smartphones-installiert-werden/
This worked for my Lumia 520, you just need to use following values in the registry editor instead.
PhoneFirmwareRevision
02061.00074.14273.33019
PhoneManufacturerModelName
RM-975_1005
PhoneMobileOperatorName
ATT-US

thx
Good news Than you.

Please login again or use a different user name.
How to fix it.

[Request] Need 4 cabs in order to upgrade to 10586 offline

Hello everyone in xda
You may have seen my video on YouTube, and now I want to upgrade my Lumia 650XL Honjo (Yes, the prototype model, from RM-1155 to RM-1158) to Windows 10 Mobile Build 10586 from the buggy Windows MobileCore 10 Build 10120/10160. I can't search any update by modifying models to Lumia 650 and using Windows Insider, so I want to use iutool to upgrade it. Right now, with 4 required cab missing, I can't upgrade my Honjo. These 4 files are:
microsoft.8909.devicelayout_prod.spkr_***.cab
microsoft.devicelayout_qc8909.mainos.spkg_***.cab
microsoft.soc_qc8909.mainos.spkg_***.cab
microsoft.soc_qc8909.updateos.spkg_***.cab
(*** means its SHA1 that I don't know)
If any other required MSM8909 specified files needed, plz provide it too, just its direct link from Microsoft Update Server or attachments.
If it's convenient for you, you can provide another files such as microsoft.mainos.production_res_720x1280.spkg_***.cab.
BTW, if you have a better way to upgrade my prototype, plz let me know.
Thanks in advance!
P.S. If you haven't watched my video, you can watch it below:
(Domain name of YouTube)/watch?v=P0V6lqNYEG4

could you before you do that send me the xaps and appxes from the xaps folder and also send me some app list screenhots

Prototypes are unupgradable thru OTA, means using CAB files too.

djtonka said:
Prototypes are unupgradable thru OTA, means using CAB files too.
Click to expand...
Click to collapse
However, I've heard some guys' Lumia McLaren (prototype model too) could be upgrade to Windows 10 Mobile by modifying models, though risky.
So I think it's possible on Honjo too.

Please help me to update Lumia 530 to Windows 10

Hi
I've updated a long time ago my Lumia 530 to Windows 10 with the registry hack.
After a long time since I've last used it, I I needed to reuse it, but I had to reset it with Windows tool, because it wasn't working well, due to the long time of shut down without battery. Obviously the tool gave me 8.1.
I wanted to do the hack again, because I luckily saved the website page, but, doing the same steps, the phone still doesn't find Windows 10 update. In addition, most of the tuts that you can find online are outdated, so they're useless (also because you cannot join insider program anymore).
I need Windows 10, also due to work issues.
Can you please help me? Any help is really appreciated! :highfive:
Thanks in advance & regards,
F

simple solution, after WDRT use OTC updater https://www.microsoft.com/en-us/download/confirmation.aspx?id=56726

dxdy said:
simple solution, after WDRT use OTC updater https://www.microsoft.com/en-us/download/confirmation.aspx?id=56726
Click to expand...
Click to collapse
Hi
Thank you for your help but Lumia 530 doesn't have Windows 10, I did an hack to update it. When I used this tool, it said "no updates available".
I was searching for a working hack to permit the update in my phone, because the one I used doesn't work anymore.
Thanks:highfive:

The Lumia 530 is not compatible with Windows 10 because it only has a 4 GB memory board, and 8 GB is the minimum (with 1 GB of RAM). A hack exists, but requires external storage and a modification of device targeting info.

Moreover, it does not work well under CU or FCU. Stay on AU.

furboom1240 said:
The Lumia 530 is not compatible with Windows 10 because it only has a 4 GB memory board, and 8 GB is the minimum (with 1 GB of RAM). A hack exists, but requires external storage and a modification of device targeting info.
Click to expand...
Click to collapse
The modification of devicetargetinginfo was exactly what I was looking for. Can you please tell me one that works? I've tried with Lumia 9xx series but it doesn't work well. Can you please send me another one? Thank you :highfive:
PS Can you please send me not only the device name, friendly name, hardware variant? Because it seems like there's a conflict between one of the edited values and a stock value, TY

Hi,is there a way in 2020 to put W10 in a no eligible Lumia 530?I have tried the trick with "Windows insider" and "Preview for developers" one year ago but that didn't work (impossible enter in fast ring) and the Wphone 8.1 store shut down now .Do you think I can do it if I modify the registry with custom-pfd-003.xap to pretending my phone is a 535 instead of 530 and after I will apply the OTC UPDATE.I'm wondering if that will work .
Thank you

Windows 10 build 15035 for Surface RT

Windows 10 compiled for the original Surface RT devices has leaked.
Source: BetaWiki
It would be super cool if this community managed to create a working image for the OG RTs (de-bombed & with correct drivers). Anybody here who could share the leaked image with us?

Avonlady said:
Windows 10 compiled for the original Surface RT devices has leaked.
Source: BetaWiki
It would be super cool if this community managed to create a working image for the OG RTs (de-bombed & with correct drivers). Anybody here who could share the leaked image with us?
Click to expand...
Click to collapse
Well, it hasn't exactly leaked yet. Do you have the actual file? I can add the correct drivers and remove the timebomb if I can get my hands on it

Unfortunately no, I don't have access to BetaArchive's FTP. But I would be shocked if nobody on this forum had... Fingers crossed it gets reuploaded soon.

Avonlady said:
Unfortunately no, I don't have access to BetaArchive's FTP. But I would be shocked if nobody on this forum had... Fingers crossed it gets reuploaded soon.
Click to expand...
Click to collapse
Another thing we need to find out, does it require configuration to boot? Or is it just a bootable install image?

Well I manage to get the file. Its not iso its a zip. But I have honestly not Idea what to do with it, and I try in all inventive ways, LOL!. I could make a torrent file if any its interested on. With the compromise on do a tutorial later if some one manage to do anything with it.

Qiangong2 said:
Well, it hasn't exactly leaked yet. Do you have the actual file? I can add the correct drivers and remove the timebomb if I can get my hands on it
Click to expand...
Click to collapse
To benefit the community and have more people working on this, Did you think you could do some quick howto on doing this. Or point us on the right learning path! Im so eager to learn this stuff!

hackinc2000 said:
To benefit the community and have more people working on this, Did you think you could do some quick howto on doing this. Or point us on the right learning path! Im so eager to learn this stuff!
Click to expand...
Click to collapse
In the end, I won't know how exactly to fix the timebomb unless I can see the file itself. Replacing the drivers are just as easy as copy paste into the wim file.

Qiangong2 said:
In the end, I won't know how exactly to fix the timebomb unless I can see the file itself. Replacing the drivers are just as easy as copy paste into the wim file.
Click to expand...
Click to collapse
PM you in a moment!

I've been trying to get this running on Surface 2, the way I've been trying with this is a dual boot with RT 8.1 and I've partitioned my device to allow roughly 12GB for the Windows 10 installation.
Unfortunately there is an issue with nvpep causing a BSOD that is beyond my abilities to solve, without nvpep nothing else will work. I don't have a Surface RT to test with but I read that this issue does not manifest on those devices, however it still won't work out of the box.
I've pieced together some information that might be of help if your trying to install that applies to RT and 2.
Make sure secureboot debug policy is applied and don't forget to enable testsigning and nointegritychecks. If you have Jailbreak killing updates installed its probably faster to factory reset your device.
You will need to replace sdbus.sys and ststor.sys in \Windows\system32\drivers\ with versions from RT 8.1.
You will need to edit the registry on build 15035 to disable UAC - HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System - EnableLUA set value to 0.
Before booting 15035 you will need to create new directory on EFIESP in \EFI\Microsoft\Recovery and then create an empty BCD Store in that location.
If you don't add the Surface 2 drivers it will actually boot to the desktop but no devices will work (Pretty much every device requires nvpep up and running first), you can play around with it using a USB keyboard and mouse but its a little pointless at the moment.

Would it be possible to share the build with wider community, so more people can have a shot at getting it up and running? I know I would love to play around with it.

Avonlady said:
Would it be possible to share the build with wider community, so more people can have a shot at getting it up and running? I know I would love to play around with it.
Click to expand...
Click to collapse
Please make no mistake on the significance of said leak. There is no other known more-recent ARM 32bit Windows 10 build available on the Internet. The driver hacking community could appreciate a more open leak very much (just look at what it did to the Lumia 950/XL hacking scene around gus33000).. Sites like uup dot rg-adguard dot net fail to list this build.

Avonlady said:
Would it be possible to share the build with wider community, so more people can have a shot at getting it up and running? I know I would love to play around with it.
Click to expand...
Click to collapse
Found this on MDL (Mega.nz Download - I can't seem to post full URL's so remove the "_")
Code:
h_t_t_p_s:/_/mega.nz/#!mJ8BSABD!kgdXbJUTKDehFlAMJ9EXswgZs1gYvijeMEZjDNeBfqU

ChumpDrive said:
Found this on MDL (Mega.nz Download - I can't seem to post full URL's so remove the "_")
Code:
h_t_t_p_s:/_/mega.nz/#!mJ8BSABD!kgdXbJUTKDehFlAMJ9EXswgZs1gYvijeMEZjDNeBfqU
Click to expand...
Click to collapse
I might try it.

Well, what about compatibility with the Lumia 2520? Do you think it would be possible to install Win10 or at least 10S on that one too? It runs 8.1RT, like the old surface RT...

mivas said:
Well, what about compatibility with the Lumia 2520? Do you think it would be possible to install Win10 or at least 10S on that one too? It runs 8.1RT, like the old surface RT...
Click to expand...
Click to collapse
h-t-t-p-s-:-/-/-betawiki.net/wiki/Windows_10_build_15035

lxy3427 said:
h-t-t-p-s-:-/-/-betawiki.net/wiki/Windows_10_build_15035
Click to expand...
Click to collapse
Thank you very much for the link.
Sadly, it says that it doesn't support Lumia 2520... It requires a driver...
I think I won't even ask for unreleased protos, like the Lumia 2020 ("Illusionist") etc

Here's a guide how to install this build on Lumia 1520: https://translate.google.com/translate?sl=auto&tl=en&u=https://www.ithome.com/0/468/534.htm

Avonlady said:
Here's a guide how to install this build on Lumia 1520: https://translate.google.com/translate?sl=auto&tl=en&u=https://www.ithome.com/0/468/534.htm
Click to expand...
Click to collapse
Wow! Soo Nice! This makes me want to buy this phone... :good:

Can someone upload these files somewhere else from baidu?

Hello!
This is a guide to install Windows 10 ARM on Surface RT 1/2. https:_/_/_m_.ithome.com/html/469731.htm (remove all _ signs)
What do you think about this?

Help needed to install Windows 10 for ARM32 for Nokia Lumia 2520 RT

Hi guys, can anyone help to install Windows 10 for ARM32 for Nokia Lumia 2520 RT tablet?

Same procedure as other devices but you will have to substitute the drivers with ones from the 2520 aside from qcpep which has to be replaced with an alternative one which I think came from the Lumina WoA project staff (From Lumia 930?). However, if your 2520 has been kept up to date with the latest patches under RT 8.1 then you won't be able to jailbreak it in order to use 15035

jwa4 said:
However, if your 2520 has been kept up to date with the latest patches under RT 8.1 then you won't be able to jailbreak it in order to use 15035
Click to expand...
Click to collapse
Hi JWA4 could you expand on this? Also is it the case for the surface RT as well (latest up to date version can't be jailbreaked) or just the 2520?

devinpatterson said:
Hi JWA4 could you expand on this? Also is it the case for the surface RT as well (latest up to date version can't be jailbreaked) or just the 2520?
Click to expand...
Click to collapse
The short version as I understand it is that Nvidia screwed up in users favor which makes the Tegra Surfaces immune to permanent effects of the jailbreak killing Windows RT updates. On these devices reversing the negative effects of theses updates is as simple as a factory reset.
Sadly with the Lumia 2520, Qualcomm did the job right and at present there is no going back if a jailbreak killer has ever been installed.
I will try to find the detailed explanation I read and post it here asap.

jwa4 said:
The short version as I understand it is
Click to expand...
Click to collapse
Thanks for taking the time to fill me in the 2520 Jwa4
jwa4 said:
I will try to find the detailed explanation I read and post it here asap.
Click to expand...
Click to collapse
That would be awesome if your able to locate the info in more detail

devinpatterson said:
That would be awesome if your able to locate the info in more detail
Click to expand...
Click to collapse
I was unable to find the explanation that I read but if I find it again I will post.
I could be wrong and there might be more to it but I think the general idea was that Nvida did not implement the mechanism that handles the revocation of previously issued certificates correctly whereas Qualcomm did. On a previously updated Lumia 2520 this prevents the Secure Boot Debug Policy from working because its certificate is no longer going to be valid on the device.

Telegram: Contact @L2520w10RT
4pda.ru
I installed Win 10 RT on Lumia 2520.
with any security updates! No problem.
But, I need help with drivers.

CageOff said:
Telegram: Contact @L2520w10RT
4pda.ru
I installed Win 10 RT on Lumia 2520.
with any security updates! No problem.
But, I need help with drivers.
Click to expand...
Click to collapse
How were you able to do this? I thought the Secure Boot issue stopped any other installations?

lord_melchett said:
How were you able to do this? I thought the Secure Boot issue stopped any other installations?
Click to expand...
Click to collapse
Go to Discord. I discuss all the sub-genes there. The system is not ready for public use. Testsign, secureboot and everything you need is there. No problem using Linux via grub uefi. It is much more difficult to find developers who will do this. And Tales about the impossibility of disabling Secureboot is just a fact of bygone days. The device is now free of these restrictions.
No touch, no modem, no BT, no audio, adreno 330 not work.
But yesterday qcpep and qcpepproxy did not work as expected.
Today they are working as expected.
I will start other hardware devices too. It just takes time.

CageOff said:
Go to Discord. I discuss all the sub-genes there. The system is not ready for public use. Testsign, secureboot and everything you need is there. No problem using Linux via grub uefi. It is much more difficult to find developers who will do this. And Tales about the impossibility of disabling Secureboot is just a fact of bygone days. The device is now free of these restrictions.
No touch, no modem, no BT, no audio, adreno 330 not work.
But yesterday qcpep and qcpepproxy did not work as expected.
Today they are working as expected.
I will start other hardware devices too. It just takes time.
Click to expand...
Click to collapse
Cool. So does everything work fine on Linux, just not in Windows 10? Having never used discord let me know where to find out. If I can dump any files to help let me know

CageOff said:
[URL unfurl = "true"] https://4pda.ru/pages/go/?u=https://t.me/L2520w10RT&e=103134199&f=https://4pda.ru/forum/index .php% 3Fshowtopic% 3Dst5135 [/ URL]
Ho installato Win 10 RT su Lumia 2520.
con eventuali aggiornamenti di sicurezza! Nessun problema.
Ma ho bisogno di aiuto con i conducenti.
Click to expand...
Click to collapse
Salve...mi potreste aiutare ad aistallare windows 10 oppure linux mine su nokia lumia 2520?

Salve ragazzi ... vorrei un aiuto per istallare windows 10 o linux mine su nokia lumia 2520 ... se è possibbile..grazie..questo forum e fantastico ... max

Do you have a guide to follow for this? I went to your Telegram site but all I saw was pictures.

i need help to install windows 10 rt on Nokia 2520

I know this device is so outdated and all, yet it'd be nice to get some use out of it. Anyone have a proper guide on how to accomplish what @CageOff was saying in order to bypass the security update patches and getting securebooot unlocked. I've tried so many different methods and gotten nowhere in my attempts to get working BOOTABLE USB media for 8.1. No guide clearly explains/points out that the Myriachan's Jailbreak is the exploit specifically intended for the Qualcomm Nokia Lumia 2520 to get the test mode exploit going (if it works). Longhorn obviously doesn't work as it can't install Golden Keys. I went to the Telegram group @CageOff mentions, but there is no way to talk to the person nor any clear info about how he managed to dualboot win10 arm/win8.1 arm. If anyone could shed some light on me here, It'd be much appreciated.

hugoBOSS1981 said:
I know this device is so outdated and all, yet it'd be nice to get some use out of it. Anyone have a proper guide on how to accomplish what @CageOff was saying in order to bypass the security update patches and getting securebooot unlocked. I've tried so many different methods and gotten nowhere in my attempts to get working BOOTABLE USB media for 8.1. No guide clearly explains/points out that the Myriachan's Jailbreak is the exploit specifically intended for the Qualcomm Nokia Lumia 2520 to get the test mode exploit going (if it works). Longhorn obviously doesn't work as it can't install Golden Keys. I went to the Telegram group @CageOff mentions, but there is no way to talk to the person nor any clear info about how he managed to dualboot win10 arm/win8.1 arm. If anyone could shed some light on me here, It'd be much appreciated.
Click to expand...
Click to collapse
Myriachan is not specifically intended for Qualcomm devices, its just that it can't be permanently patched against but this won't help you for 15035.
I don't have a 2520 but from what I can tell CageOff seems to have booted 15035 on a 2520 but the details are getting lost in translation and a writeup doesn't seem to be forthcoming. From what I can gather even though he has booted 15035 on his 2520, he has done so without the installation of the QCPEP driver and without this driver virtually nothing else will work.
On QCEP - BetaWiki.net
This build does not support the Nokia Lumia 2520 Qualcomm Power Engine Plugin driver. Loading a newer driver for the Snapdragon 800 is mandatory.
Click to expand...
Click to collapse
The newer driver I believe is harvested from the LumiaWOA project, specifically taken from the Lumia 930 package. It could be worth looking at how WFAv7_Installer installs 15035 on a 930? It might shed some light on the driver ordering, as far as I've been told Qualcomm stuff has to be dealt with in a certain order.
Before you put too much time in to this though remember 15035 is about as much use a chocolate teapot so remember its just for fun. If you spend a week figuring it and actually get it all working in the hope of making an ex-RT device useful you are going to be a little disappointed at the end of it.

jwa4 said:
Myriachan is not specifically intended for Qualcomm devices, its just that it can't be permanently patched against but this won't help you for 15035.
I don't have a 2520 but from what I can tell CageOff seems to have booted 15035 on a 2520 but the details are getting lost in translation and a writeup doesn't seem to be forthcoming. From what I can gather even though he has booted 15035 on his 2520, he has done so without the installation of the QCPEP driver and without this driver virtually nothing else will work.
On QCEP - BetaWiki.net
The newer driver I believe is harvested from the LumiaWOA project, specifically taken from the Lumia 930 package. It could be worth looking at how WFAv7_Installer installs 15035 on a 930? It might shed some light on the driver ordering, as far as I've been told Qualcomm stuff has to be dealt with in a certain order.
Before you put too much time in to this though remember 15035 is about as much use a chocolate teapot so remember its just for fun. If you spend a week figuring it and actually get it all working in the hope of making an ex-RT device useful you are going to be a little disappointed at the end of it.
Click to expand...
Click to collapse
That's definitely worth looking into in regards to the "WFAv7_Installer". I just tried the WOA Deployer v2.7.1 and it seems it could be of great use in getting Win 10/11 arm onto this device. Of course, if one can figure out how to access/enter a Mass Storage mode first.
I also read in another forum article that the IOT versions of Windows seems to be more useful for this device, rather than trying to get the standard Pro/Home editions. They also mentioned that one may need to apply the drivers from the original Win 8.1 RT in order to get all of the devices hardware working though. I would personally like to give this a try, but I can't seem to get to the point of being able to install Win 10 build 15035 onto my device. I can't enable test-signing mode, nor disable bootloader with any of the jail breaks available. I get the error code 0x000000000000d (not sure i put the correct amount of zero's there), which seems to give no existing info on the net for that error code, only a few forum posts regarding the variant to that code which ends in "f" which seems to be related to the Surface 1/2 devices.
I know I can format the eMMC properly via command prompt, diskpart, and dism (for Win 8.1 RT), then disable BitLocker (even though C:\ still says Bitlocker Encrypted). Yet, I just can't get the Win 10 media to work which i assume is due to secure boot. Does it make any difference if I'm using the install.wim or install.esd versions of the media?

hugoBOSS1981 said:
That's definitely worth looking into in regards to the "WFAv7_Installer". I just tried the WOA Deployer v2.7.1 and it seems it could be of great use in getting Win 10/11 arm onto this device. Of course, if one can figure out how to access/enter a Mass Storage mode first.
Click to expand...
Click to collapse
WOA Deployer is specifically for deploying WoA on the Lumia 950 & 950 XL, it doesn't support Windows 10 15035 or ARM32 devices like the Lumia 2520.
Windows 11 is out of the question, only small parts of it were built for ARM32 (nothing close to a full client) and the bits that were built won't work with this SoC. I don't believe WFAv7_Installer ever had the 2520 in mind, I only suggested it because how it prepares an image for some of the Lumia phones might shed some light on how an image would need to be prepared for the 2520.
hugoBOSS1981 said:
I also read in another forum article that the IOT versions of Windows seems to be more useful for this device, rather than trying to get the standard Pro/Home editions. They also mentioned that one may need to apply the drivers from the original Win 8.1 RT in order to get all of the devices hardware working though.
Click to expand...
Click to collapse
That's going to come down to what you define as useful but personally I don't see any point in running IoT on a tablet. At the time of writing only the 15035 client build is available and that's now over five years old. Drivers taken from the RT 8.1 recovery image would be required along with the replacement PEP driver mentioned previously but its possible not all drivers will be compatible with IoT.
hugoBOSS1981 said:
I would personally like to give this a try, but I can't seem to get to the point of being able to install Win 10 build 15035 onto my device. I can't enable test-signing mode, nor disable bootloader with any of the jail breaks available. I get the error code 0x000000000000d (not sure i put the correct amount of zero's there), which seems to give no existing info on the net for that error code, only a few forum posts regarding the variant to that code which ends in "f" which seems to be related to the Surface 1/2 devices.
Click to expand...
Click to collapse
To enable test mode you would need either Golden Keys or the Myriachan jailbreak, unless you are lucky then the device you have might not be capable of using Golden Keys anymore. If I'm remembering correctly the Myriachan jailbreak is only useful for running third party applications under RT 8.1 and wouldn't assist in running another OS.
hugoBOSS1981 said:
I know I can format the eMMC properly via command prompt, diskpart, and dism (for Win 8.1 RT), then disable BitLocker (even though C:\ still says Bitlocker Encrypted). Yet, I just can't get the Win 10 media to work which i assume is due to secure boot. Does it make any difference if I'm using the install.wim or install.esd versions of the media?
Click to expand...
Click to collapse
Windows 10 15035 isn't available as an ESD, you would need to take the 15035 installation files and properly add the drivers to boot.wim, install.wim and winre.wim before copying them to USB and attempting the installation. CageOff seems to have installed 15035 without the use of Golden Keys but even when booted the installation of 15035 is useless because he has not added the PEP driver.
A clean 15035 if you don't have one (No drivers):
Windows 10 Enterprise Build 15035 ARMv7 : Microsoft : Free Download, Borrow, and Streaming : Internet Archive
Windows 10 Enterprise Build 15035 ARMv7
archive.org
Lumia 2520 Drivers (Extracted from RT 8.1 Recovery Media):
Lumia_2520_Drivers.zip - AnonFiles
anonfiles.com
Replacement qcpep / qcpepproxy from Lumia project for 15035:
Lumia_930_qcpep.zip - AnonFiles
anonfiles.com
I don't know much at all about the 2520 and pretty much anything I say about it could be wrong