I have tried to update my Lumia 930 (which was already nicely running Windows 10) to its latest Windows 10 Mobile Anniversary Update and got stuck on the logo screen for indefinitely long time.
The update seem to have proceeded smoothly until the device restarts and displays the blue logo and then stuck there for ages.
Tried to factory reset and it ran the reset and then again stuck at the logo screen forever. The Device Recovery Tool is helpless as it cannot establish a USB connection with the device.
Goddamn, I should've never tried the damn Windows 10 Mobile Anniversary Update.
Updating Windows 10 Mobile is always very painful and extremely risky, no idea why Microsoft cannot engineer a proper update in 2016.
Any help guys? :'(