These OS's contain every bar that would be downloaded by BlackBerry Desktop Manager in a zip folder.
U can update os using cfp or you need those firmware to Jailbreak your PlayBook.


OS1 Downloads

1.0.1.1710

1.0.3.1868

1.0.5.2304

1.0.6.2390

1.0.7.2670

1.0.7.2942

1.0.8.4985

1.0.8.6067


OS2 Beta Downloads

2.0.0.3778

2.0.0.3894

2.0.0.4869

2.0.0.6149

2.0.0.7111


OS2 Official

2.0.0.7971


Edit : Don't update 7971 then you are unable to JB or root. you lost it