I'm considering buying a Nokia Lumia 730 (or 830), but it comes with 8.1 preinstalled, while I'd like to be using WP8 instead.

Is there any way I could downgrade?

All the solutions I could find on the Internet apply to the devices updated OTA.

I can also see the similar questions:

  • 5
    Why would you want to do that?
    – Rowland Shaw
    Feb 15, 2015 at 17:33

2 Answers 2


No, it's not possible for the Lumia 735 (or 730) or 830.

Those devices shipped with the Windows Phone 8.1 OS which means that's the minimum version the devices will run.

There is no version of 8.0 for those phones, which would have to include low-level driver support for on-screen navigation keys, newer CPUs, camera modules, etc.


Your question can be answered, but you can (only) do that if you have a professional knowledge about hardware and software of Windows Phone. One of my friends did it and it worked, but I recommend you do not try to do that, may be risk !

  • 1
    Could you give some actual details about how this can be done?
    – Indrek
    Feb 15, 2015 at 18:00

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