Here’s a very helpful video on how to reset your bricked Nokia Lumia. Note that this applies to all Lumias; 520, 620, 920, 1020 etc. You’ll need the software mentioned in the video, which comes from Nokia, available here:
My fiancée recently decided to wipe her Lumia 920 after switching to another Lumia. Her new Lumia setup without a problem but her 920 got stuck hanging after resetting the phone to factory settings.
We got a screen with two spinning gears that went on endlessly. I thought, damn, did I mess it up? Luckily no, it turns out that this is a problem common in Lumia phones.
Her Lumia was running Nokia’s Lumia Amber firmware, it’s not clear if the reset problem will be fixed with their new firmware called Lumia Black, which rolls out in January 2014.
Because the Lumia is inoperable during the gears screen, there’s no way to update to the new firmware. Instead users have to input physical machine commands using the power and volume buttons. Luckily, Nokia is aware of the problem and has a site with machine command instructions.
We love the 920 design and Windows Phone experience, although it still lacks in the app department. I’m a total Apple guy (I own an iPhone 5, iPad Mini, Mac Mini, and have gone through 2 MacBook Pros and an iMac since 2004), but I dig what they’re doing with Windows Phone, it has potential. I dig it enough that I recommended a Lumia 520 for my dad. In spite of these positives, Nokia and Microsoft screwed up on the reset function. We’d expect the problem to go away with Lumia Black, which comes out this month.
Our Lumia 920 has seen more than the average smartphone in the year that we’ve owned it, but that’s another story.