How to downgrade the Microsoft Lumia 640 XL to Windows 8 - Microsoft Community

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hi!! m unable call or receive call after upgrading microsoft 640xl windows 10 using upgrade advisor phone switches of while making or receiving call. kindly me downgrade windows 8.

original title: how downgrade microsoft 640x

use windows device recovery tool, full guide here:

https://support.microsoft.com/en-us/help/12379/windows-10-mobile-device-recovery-tool-faq



Mobile Devices / Microsoft Lumia and Nokia Lumia / Using Windows 10 on phone



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