Files and guide to unbrick the Microsoft Lumia 640

Download and install WDRT: http://go.microsoft.com/fwlink/p/?LinkId=522381

Download Windows Phone Internals: https://github.com/ReneLergner/WPinternals/releases

Download the RM-1113 Emergency files: https://www.lumiafirmware.com/model/RM-1113/hwid/059X0Z0 // (Will be linked in the releases page)

Download the RM-1073 FFU: https://www.lumiafirmware.com/model/RM-1073

Download the RM-1113 Emergency files: https://www.lumiafirmware.com/model/RM-1113/hwid/059X0Z0 // (Will be linked in the releases page)

Download the RM-1077 FFU: https://www.lumiafirmware.com/model/RM-1077

Put the ffufile and emergency files in a folder. Rename the ffufile to ffufile.ffu

Copy and paste thor2.exe from "C:\Program Files (x86)\Microsoft Care Suite\Windows Device Recovery Tool" // If on 64-bit Windows "C:\Program Files\Microsoft Care Suite\Windows Device Recovery Tool" // If on 32-bit Windows To the folder with the files.

Now open cmd as admin and run:

thor2 -mode emergency -hexfile MPRG8x26_fh.ede -edfile RM1113_fh.edp -ffufile ffufile.ffu

And wait for it to flash the bootloader and ffu.

When it is finished, run:

thor2 -mode rnd -bootnormalmode

If your device goes back to flash mode, Use Windows Phone Internals to flash the ffu again.

If the ffu flashing step fails, first check that the phone is detected by thor2:

thor2 -mode listconnections

You may need to reboot the phone into emergency mode before flashing the ffu. This can be done by

thor2 -mode rnd -boot_edmode