why my 535 is not updating to wp10 please help!

[Windows Central Question]

I installed wp10 few weeks ago by using previous for developer all gose smoothly but after few months later I just restart my device and I don't know how (bitlock recovery blue screen) popped up and I found no way to solve this prob soo now I wanted to upgrade my device please help.....asap

 

[Guytronic]

Your going to need to use WDRT (Windows Device Recovery Tool) to recover your phone.
If the recovery is successful you'll have to use Interop Unlock for WP 8.1 to move your phone back to WM10.