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I just reset my lumia 640 xl and while processing it is showing this symbol

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Windows Central Question

I'm having windows 10 developer's version in my phone so I reset it and it is having trouble. I'm just not able to turn it on. It is showing reset process, process completes and then it show symbol ":-(" and again shut's down


New member
Jun 1, 2014
You will probably have to reflash it with the firmware recovery tool as something must have screwed up with the update.