Is there any way to rollback windows phone 8.1 to 8 ?
There's no universal way to roll any Windows Phone device back to 8.0 that's guaranteed to work 100% of the time.
You cannot revert or return to a prior operating system release version after you have updated your phone to a preview update. We will move you forward to a "released state," but we cannot take you back to a prior "released state."
For most people on the Developer Preview programme, the best advice is to simply wait until the official 8.1 update becomes available from their phone manufacturer and/or carrier (e.g. in Nokia's case the Lumia Cyan update).
That said, it might be possible to flash your phone with the 8.0 firmware, thus rolling back the OS version. For instance, Nokia Lumia phones can be flashed using the Nokia Software Recovery Tool. However, success will depend on the availability of a ROM with the desired OS and firmware versions. For instance, when I tried to flash my Lumia 920, the only available firmware was the one containing Lumia Cyan, and I suspect this will be the case for more and more Lumia models as the Cyan rollout continues. That said, if 8.0 is still available for your phone, or if you're also fine with the Cyan firmware version, then this Nokia tool can help you downgrade (or sidegrade, as the case may be) your phone's firmware.
For other phone makers, similar tools may be available, though I'm not aware of any.
Yes you can for Nokia phones, it's very simple and easy. Nokia has released a tool for recovery you can download here After downloading the file:
- Install the program.
- Run the program.
- Plug in your phone.
- Let the PC and program recognize your phone.
- The last official update for your phone should be available, which is WP8.
- Recover the system to the version shown by the tool.
- Some phones may not have a recovery version I don't know the reason for that, maybe carrier restrictions of some sort.
- This tool only works for Nokia devices.
here is my video to downgrade from latest version of 8.1 to 8.0
Yes for Nokia phones. You can push the current offical ROM for your phone with Nokia Software Updater For Retail.
This is generally a great tool to have anyway and can also fix issue of indefinite spinning cogs.