Lumia 640 bricked after using WPRT

[Martijn Stegeman]

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!

 

[taymur]

yeah same here.

my 930 s dead too.

and there is a number of questions on answers.microsoft website. same issue with different devices.

 

[taymur]

i suggest that people don't try to roll back until this issue is resolved, or we all going to be on bricked phones.

 

[taymur]

so no one has faced this recently? any ideas on how to fix it?

 

[taymur]

Fixed it.... But it was luck... That's it.

 

[Martijn Stegeman]

Fixed it.... But it was luck... That's it.

How?

 

[taymur]

How?

I do not know. Some how my wprt installed an emergency package and that fixed the issue.

But dont uninstall the QHSUSB_BULK driver as that is hard to find lol

 

[ryancut]

Has anyone else had this issue? I have the WP 10 installed and might want to rollback sometime soon. Want to make sure this isn't an issue that affects all 640s.

Update: Just rolled back to 8.1 with no issues at all. Might be worth noting I used the USB cable that came with the phone.

 

[mackie99]

I had no problem rolling back to 8.1 from 10. Only took about 20 mins.

 

[Bubblefat]

This is why i use approved, released post-beta operating systems.