Lumia 640 bricked after using WPRT, how can I fix it?

[Windows Central Question]

Lumia 640 bricked after using WPRT

Hi,
Today i tried to downgrade from Wp10 to Wp8.1 using WPRT but it bricked my Lumia 640. The phone does not respond to anything and the screen stays black. Now it shows as QHSUSB_BULK in device manager when i connect te phone to my pc. WPRT says "The connected device cannot be recovered" when i try to recover it.
I also tried to recover it with the THOR2 method but it give error code "HOR2_EMERGENCYFLASHV1_ERROR_XML_PARSING_FAILED" when i run the command "thor2 -mode emergency -hexfile C:\lumia\HEX.hex -mbnfile C:\lumia\GPT0.bin -orig_gpt". Is there any solution to my problem?
Thanks!

 

[charlatan1978]

Re: Lumia 640 bricked after using WPRT

My Lumia 625 was stuck on the Nokia logo after rolling back to WP8.1.
I did a soft reset (Power + volume down) and then it loaded ok.

 

[Vijay Wilfred]

Re: Lumia 640 bricked after using WPRT

from where you got your HEXfiles ?

 

[miguel11691]

Re: Lumia 640 bricked after using WPRT

Use nav to get your software for your phone... Then hold the power and up bottom with the device off... Once ur phone vibrates let go of the power button... Your phone should show a lightning bolt... Install WPID and use that to install the software you got from nav... You should be fine after that....