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Nokia Lumia 800 "dead" in a boot loop - help me flash it!

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By GSMfreak75, Junior Member on 18th April 2014, 03:41 PM
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Hi all.
I have a Nokia Lumia 800 which one evening I was powering off. The next moment I tried to turn it on, it appeard to be stuck in a boot loop or something. It vibrates for two seconds, then after a few seconds, a short vibration comes. This will go on in some kind of loop.
Don't know if the bootloader is trying to get the main FW up and running, without succeeding.
The local smartphone repair centre was trying a new battery and a new screen without getting it on. They simply wrote in their report "mainboard dead".
They did not have the possibility of flashing the FW.
Obviously the phone has some corrupt firmware and it needs to be reflashed.

Here is what I've tried:

I downloaded the Nokia care suite but it seems it does not support flashing a dead Lumia.
I also tried Nokia Software recovery tool, but it cannot connect to the phone - sometimes reporting "cannot read device" and sometimes "the phone is not supported"
I'm running Windows 7 and my PC. Does it perhaps require WinXP?

What can I do?

Thanks in advance, really appreciate it!
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