[Saurabh Ray]

I have downloaded the required firmware via navifirm and installed necessary nokia care suite. But only thing is i cant downdate to wp 7.5 from wp 7.8. Nokia care suite displays message 'not upgradeable' which is obvious i know. I want to know how to reinstall wp 7.5 via navifirm and nokia care suite 5.0
Thanks

[markrtoon]

I'm just curious, why do you want to downgrade? If it's because of the lag, install the 2 newest 7.8 updates it fixed lag and tiles on my 710. Use Cab Sender and Google for "Windows Phone 7.8 8860 XDA" and "Windows Phone 7.8 8862 XDA" to get the cab files.

[WhippedKream]

I'm just curious, why do you want to downgrade? If it's because of the lag, install the 2 newest 7.8 updates it fixed lag and tiles on my 710. Use Cab Sender and Google for "Windows Phone 7.8 8860 XDA" and "Windows Phone 7.8 8862 XDA" to get the cab files.

Really? Cuz i updated my old optimus 7 just today and the tiles were still lagging because of the animation of the tile press. Maybe its cuz I don't have a sim inside it? Iunno but without I see it being very.. Very slow

[markrtoon]

Hm, to 8862? Then I won't deter you.

Check out this nifty guide [GUIDE] How to flash a dead Lumia 800 RM-801 - xda-developers.

You'll have to follow it loosely. For instance the directory you'd create would be RM-809 if I recall correctly.

You'll also lose whatever data you have on the phone, but I think you're aware of that.

[Sneha J]

Can you please share or tell me where did you get 7.5 firmware ?

[stakoron]

Hello all, I also want to revert back to WP 7.5 on my Lumia 710 because of the sound problems WP7.8 has (I can barely hear the person I talk to although my volume is at maximum and the same with music), apparently a lot of people have the same problem with WP 7.8. The problem is I can't find the firmware apparently you can't download anymore with Nokia_DataPackage_Manager_2012.18.0, Care suite or Navi firm, Nokia doesn't allow access on their servers. Does anybody knows another solution?

[Detectionable]

Hello all, I also want to revert back to WP 7.5 on my Lumia 710 because of the sound problems WP7.8 has (I can barely hear the person I talk to although my volume is at maximum and the same with music), apparently a lot of people have the same problem with WP 7.8. The problem is I can't find the firmware apparently you can't download anymore with Nokia_DataPackage_Manager_2012.18.0, Care suite or Navi firm, Nokia doesn't allow access on their servers. Does anybody knows another solution?

http://www.portableandroid.co.uk/and....5%20Stock.rar

7.5 Stock ROM and Flashing Tool included in download

1, Power off the phone & Remove the USB cable
2, Press and hold the Vol+ button
3, Plug the USB cable, wait for the buzz, Release the Vol+ button
4, Run this tool as administrator user

If you run into problems, see this thread
Nokia Lumia 710 - A Layman's guide to install CUSTOM ROM - xda-developers