How to factory reset. Be sure to remove SIM and memory card and factory reset. Most likely a fatal error (hardware) but try resets.
I have nokia lumia 520 ,last night it showed the above msg on screen and not working since.
I have tried soft & hard reset, windows device recovery tool, nokia software recovery tool but invane.
on windows recovery tool it says the device is not signed.
how can i repair my phone and remove the fault?
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