First, we should agree not all of us can afford to do a clean install.
Second, we have lots of reports of failed flashings.
I have a personal prefferance for OTA, mainly because it simplifies the equation.
I had a suspicion that the issue can be caused by the FasterN9 mod. I can definitely confirm this in my case. Also affected: Auto Speaker Switch app.

Basically, neither Auto Speaker Switch and Easy answer didn' work after PR 1.3. Before the fw upgrade I had the Fastern9 removed, and reinstalled after.
suspecting that the mod is the reason the two apps stopped working, I uninstalled the Fn9. After the reboot, still no joy.
After several tries I found the correct order for installation of both apps and the mod.
I uninstalled all the apps that didn't work and the Fastern9.
Next I installed the Faster n9. After the reboot, I successfully installed the apps.
Even if this is obviously a bug created by a combination of a mod and a new fw, I know there's more users that appreciate the combination of the above.
Hope it helps others too.