I have a similar issue.
Purchased a 64GB PB recently, managed to successfully downgrade the OS to 2.0.0.4869.
Having done this is find that I have 3 apps, the browser and 2 games.
How do I get AppWorld installed and the other native apps?
Any help would be much appreciated, struggling to find a way forward.
Note - I don't want to upgrade to the latest OS, may wish to root at some point.
Thanks in advance