Nokia lumia 920 ? Unlock & Repair

[2015kendolo]

Hi guys. I have a l920 locked to orange France. I connected to my PC thru Nokia updater and updated to latest. After update I reset the phone then waited for a while but no display, screen black. Have tried all manner of solutions to no avail. Please could u advice. Want to buy BB5 Infinity Dongle to repair it b4 buying a new LCD. Pls advice the best Infinity for repair.

Thanks

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