What strange was, I did a dalvik and cache wipe before installing the update 4.20 and the play store was still there. I never had that with an update. But now with every restart the old market keeps returning. I will try it later with a wipe of the market cache. See what happens then.odd try this:
clear data and cache from market app
reboot into cwm
clear cache partition
reboot as normal
then add your details to log in to market and let it upgrade naturally - let me know if this helps
That's normal behaviour. Everytime you open your market for the first time, it begins to download the latest version and then automatically updates itself in the background.I have a weird fix.
When I open my Skype through my market, then it converts market to the Play Store and stays that way...