Windows 8.1 for nokia lumia 520

Guys I installed Windows 8.1 using Preview for Developers... Can I revert back to the original Windows Phone Software?
(I mean the one we get when the phone is new, not the one of Preview for Developers)

Sorry I am new to Windows Phone so I don't know much about it.
 
Guys I installed Windows 8.1 using Preview for Developers... Can I revert back to the original Windows Phone Software?
(I mean the one we get when the phone is new, not the one of Preview for Developers)

Sorry I am new to Windows Phone so I don't know much about it.

You can, using Nokia Care Suite. NSU for Retail might work, but Nokia Recovery Tool does not work, so I'm not sure about NSU.
 
Can you please explain me in some detail & tell me how can I do it in detail please

Download Nokia Software Updater for Retail, and use it to flash your phone.

If that does not work, note down your product code and download the corresponding ROM using Navifirm. Then use Nokia Care Suite to flash the ROM onto your phone.
 
Download Nokia Software Updater for Retail, and use it to flash your phone.

If that does not work, note down your product code and download the corresponding ROM using Navifirm. Then use Nokia Care Suite to flash the ROM onto your phone.

Nokia Software Updater for Retail does not recognize my device
 
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My wife's 520 is noticeably slower with 8.1.
For example the first time you open HERE Maps tile on the home screen it takes about 2 seconds just to start launching the program.
I can see delay in the transitions in Settings sub menus, where it should load instantly.

Overall the phone looks MUCH slower than before with WP 8.0.

Do you guys experience the same slowness after
 
My wife's 520 is noticeably slower with 8.1.
For example the first time you open HERE Maps tile on the home screen it takes about 2 seconds just to start launching the program.
I can see delay in the transitions in Settings sub menus, where it should load instantly.

Overall the phone looks MUCH slower than before with WP 8.0.

Do you guys experience the same slowness after

Yeap but like 10% but after a soft reset can say 5% but battery still suck with 8.1
 
After update, Bluetooth isn't working... It is showing error everytime I try to share files,..
 

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