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Troubleshoot your device issues
A

New Member

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1 Message

Wednesday, February 12th, 2020 1:58 PM

Microsoft Lumia 640 LTE

My phone doesnt boot past Microsoft, It brings up a UEFI-1 error , How may u assist me despite Microsofts Shutdown

ACE - Sage

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117.5K Messages

4 years ago

AT&T cannot help you with a Microsoft device. All Microsoft devices have been discontinued by AT&T and they provide no support.

Employee

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797 Messages

4 years ago

Hello,

Discontinued back a few years ago now. Using a Microsoft device, you’re kind of on your own (persistent internet searching) for solutions. Probably time for an upgrade...

ACE - Expert

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23.9K Messages

4 years ago

A UEFI error would be a chip failure.

ACE - Expert

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6.6K Messages

4 years ago

You can try following the steps in this video:

but given that MS has ended all support for the phone I wouldn't hope for success too much.

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