Launch command prompt (CMD) on your PC as administrator. If you downloaded it as a zip file, extract it with winrar or 7zip so as to have the ffu firmware. The firmware to be flashed is supposed to be in ffu extension. Every picture of your Microsoft Lumia 640 is in this folder.

The file 'internal storage' or 'phone' is the one you want to open to transfer photos from your Microsoft Lumia 640 to a computer. Click on it's file, either called 'Removable disk' or 'Microsoft Lumia 640'.8 Flash 9 Loudspeaker 10 NFC area 11 Camera 12 Antenna area 13 Micro-USB connector Important: For important info on the safe use of the phone, read the Product and safety. About this user guide This guide is the user guide for your software release. Balancing your work life and personal life just became easier. Connect to friends and family with Skype, enjoy instant access to your photos and music on OneDrive, and edit files with Microsoft Office from wherever you are. Open the box and power on your Lumia 640 LTE to the full range of free Microsoft services built in and ready to go.Download Free Microsoft Nokia Lumia 640 XL RM-1067 & RM-1077 Flash File Stock Firmware (ROM) for Windows 7/8/10/XP/Vista from the below-given download