If you just "apt-get dist-upgrade" when OTA released you'll get all the stuff updated, but meta package won't be installed, therefore on your device info you'll still see an old firmware number.

Another thing is that PR meta package does not check it's required space, instead it asks for a hardcoded free space available, so you might see a stupid thing like: download =1Kb, space needed=40Mb and it refuses to install until you clean up the root.

Other than that no issues while updating PR1.0 > PR 1.1.1

p.s. sometimes you have to use console tools, since AM can't downgrade packages or resolve conflicts automagically which is even worse without seeing apt output.