when technical preview update for window 10 was installing on my lumia 520, my phone just switched off automatically and the update couldn't be istalled while my phone was fully charged and storage was arround 2.5 gb and whenever i switched on my phone, the updating is shown and after arround 1 min it become switch off again. what to do..? if anyone knows the solution plss help me.
lumia 520
critical update from window insider app
lumia 520
critical update from window insider app
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