CF upgrading


Ive got 1.02.28 official firmware. The latest CF is
Can I update with any of these? Just in case I want to go back to where I am already.
Ive upgraded to CF 29 after installing official 29. Ive posted in hd cf firmware forum about transferring videos. Upto now Ive got ts files on my pc but cant play. Cant render files error. comes up in multli players, mpc and media player lite. which usually play trp files