Windows Device Recovery won't allow Lumia 640 to rollback to 8.1

[iFalcon]

Thanks in advance.

I have a strange problem that I cannot figure out. I have a Lumia 640 LTE with firmwaver version 02177.00000.15184.36016 and OS build 10.0.14342.1001.

We plan to give the phone to our child and I would like to rollback to 8.1. I have installed Windows Device Recovery version 3.4.34; however, it's says 'Package not available for this device' and the install software button is greyed out. I haven't run into this before; however, it's been awhile since I have rolled back from a version of WM 10.

Any ideas of how to resolve this?

 

[RumoredNow]

Have you tried enabling Flashing Mode first, then connecting to PC and opening WDRT?

http://forums.windowscentral.com/ge...ol-expanded-covers-more-oems.html#post3409280

 

[iFalcon]

Hello RumoredNow -

Thank you for the information. I did try that a few minutes ago and is unable to locate the device when I click on 'device not detected' per instructions.

Ideas from anyone else?

 

[rhapdog]

Was this phone ever flashed to a different firmware per instructions found elsewhere in the forum? I did that on a 635 and it is no longer possible to use WDRT on that phone. Somehow it breaks that ability. I don't know for sure if it will break a 640, though.

 

[RumoredNow]

Was this phone ever flashed to a different firmware per instructions found elsewhere in the forum? I did that on a 635 and it is no longer possible to use WDRT on that phone. Somehow it breaks that ability. I don't know for sure if it will break a 640, though.

In that case you can impersonate a variant in WDRT: https://stebet.net/how-to-install-a-country-variant-firmware-with-the-windows-phone-recovery-tools/

 

[iFalcon]

Is there way to determine if I flashed a different variant? The only way I have ever upgraded this phone is through windows insider.

At least, the that is all that I recall ever doing.

Thanks

Posted via the Windows Central App for Android

 

[RumoredNow]

Is there way to determine if I flashed a different variant?

I think you would definitely remember doing this.

 

[rhapdog]

In that case you can impersonate a variant in WDRT: https://stebet.net/how-to-install-a-country-variant-firmware-with-the-windows-phone-recovery-tools/

AWESOME! This could come in handy for anyone on any Lumia handset, the way I'm understanding it. Thanks!