How do I unbrick my Lumia 630 (bricked by failure rolling back Windows 10 technical preview.)?

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Windows Central Question

How to unbrick lumia 630, bricked by failure rolling back windows 10 technical preview.

I was trying to roll back windows 10 technical preview using windows phone recovery tool. The recovery tool gave failure error and requested to restart the phone, while phone was at a red screen with a nokia logo.
I mistakenly removed the data cable and phone screen turned black.
Power button did not respond.
Now I have tried everything from removing battery, to hard resetting, to trying nokia care suite(didn't understand it much).
But phone does not respond to anything and appears in device manager as qhsub_bulk.
What's the solution?
 

Harrie-S

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Sep 26, 2014
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Re: How to unbrick lumia 630, bricked by failure rolling back windows 10 technical preview.

Go to a Nokia care centre. Maybe they can unbrick your phone.
But probably you have to buy a new phone.
 

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