Hey Kailash Gajara,

I've created an app[1] using AeroGear Android 1.2.0 to try reproduce that, but I only got the 405 error when I tried unregister a device already unregistered.

Feel free to do some tests using that app and reopen it.

[1] https://github.com/danielpassos/aerogear-android-push-registration-test