Lumia 521 downgrade - Windows Phone 8 Q&A, Help & Troubleshooting

Some time ago to buy the Lumia 521 which had the windows 8 version after upgrade to version 8.1 did not work to complete the interop process.
I have two questions:
1. is possible do windows downgrade to 8?
2. Is possible complete the interop process and unlock the wp with windos 8.1?
This is my first Nokia Lumia.
Using android all was easy, in special with my sidekick 4g. :crying:

1. flashed ffu 8.0 with wpinternals.
2. wpinternals make interop unlock: 8.0-10 mobile( if have ffu)

Thank you reksden for your answer.
I can't find the ffu to download the room for 8.0.
The wpinternals is available in the forum but not found information about fuu.
Is possible request again your help with any link or aditional information...

Hello. Can you help me? Can you tell me how to unlock T - Mobile Nokia Lumia 521? Please reply. Thanks
Sent from my iPad using Tapatalk

Well, for the moment I can not find how to do it in win 8.1.
I am doing the downgrade in the phone.
After complete the process I will try follow the interop guide posted in this forum.

Downgrade was not possible after follow the steps in the post http://forum.xda-developers.com/showthread.php?t=2515453&page=253 the phone have the same version.

Related

Lumia 520 & lumia 1320 unlock

Hello friends plzzz tell how to unlock Nokia 520 Lumia 1320 .plzzz telll me the full procedure i donot know but to do.Tell me full procedure
All software apps link need for this procedure to unlock phone plzzx
What kind of unlock? SIM or developer?
Sim unlock can be achieved via the operator the phone was bought from.
OS unlock(aka jailbreak) is not possible at the moment.
Developer unlock (for sideloading) just requires the SDK. I'm not going to tell you the "full procedure" of installing the SDK and running the registration tool it contains; if you can't figure that out you proooobably shouldn't be messing with your phone in the first place.\
Sideloading high-privilege apps requires more complex unlocks, which require special MS accounts (OEMs have these) or require hacks. We have such hacks for some of the non-Lumia phones, such as Samsung's Ativ line, but not for the Lumias yet.
For the full procedure, PLEASE READ THE STICKIED FAQ!
So for now there is no possibility to unlock os on 1320? I was thinking about takeing it with my new plan, but I woulkd like to change more things than just color or lockscreen wallpaper
Nothing can be done aside from the standard dev unlock at this point for any Nokia device.
Lumia 1320 unlock
Hi Guys, i hope someone in here can make the sim unlock possible.

Has anyone interop unlocked Lumia 730?

I have found a method in this website but can't understand whats written:
http://www.winphoneviet.com/forum/t...umia-co-the-nho-tren-windowsphone-8-1.159089/
Any methods??
Hi,
http://forum.xda-developers.com/win...kia-lumia-1520-rm-940-interop-unlock-t3094580

[Q] Any new procedure for Interop Unlocking wp 8.1??

ok..though the mixradio app had been pulled out..so is this possible to interop unlock a wp8.1 device.??i tried cab pushing tutorial wit iutool but not worked for me .can anyone help me to do this.??or any other procedure for interop unlock.??
thanks in advance...

Lumia 830 - Unlock Bootloader enable root access - how?

Hi all.
I would like to ask some help.
I have a Lumia 830 - RM984
How unlock boot loader?
please.
I downloaded: Windows Phone Internals : based on this is possible, but still how?
Regards. L.
check this:
A guide for unlocking the bootloader in WP8.1 Lumia devices
Guest writer Nico again brings us tales of advanced smartphoning on older Lumias, here detailing the hacking needed to be able to side load applications without needing a working on-device Store. Yes, the procedures are incredibly geeky, but then if you're persevering with a Lumia from 2012 in...
allaboutwindowsphone.com

NEED HELP WITH UNLOCKING NOKIA LUMIA 520

Hi,
I have some problems with unlocking the bootloader in a nokia lumia 520 (carrier locked with wind, italian).
i followed a tutorial on xda developers, but it says:
The FFU-image you selected does not have a supported OS-version. Windows Phone Internals needs to extract files from a supported OS-version. You need to select such donor-FFU. If necessary, you can select an FFU-image for a different model.
could i please know how to fix this??

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