I bought a Lumia 1020 a year ago (mostly to play with the 42MP camera) and it's a great piece of hardware (I'm an Android person for daily / main use). However

I bought a Lumia 1020 a year ago (mostly to play with the 42MP camera) and it's a great piece of hardware (I'm an Android person for daily / main use). However, I upgraded to the first Win10 for Mobile preview, an d now it refuses to upgrade to a newer build ("Update was downloaded but could not be opened" - and I've tried 6-7 times). If I could get something that was hardware-wise as good as the 1020 (or the other high-end Nokia phones) that ran Android 5.1.1, it would almost be my perfect phone.