I need some help. I converted some avi files to mp4 using daniusoft video converter ultimate. After been converted to mp4 transfered to phone memory card. All went well the thing is now i cant watch the clips the screen goes dark there is no picture but only sound. anyone knows whats wrong?

with 2.2 does it mean i can watch avi files without converting to mp4?
or still need convert?

what do you mean by codec?
i wan play .avi files now with 2.2 do i still need to convert to mp4

im using build in player to play the clip.
are you saying if i use rockplayer dont have to convert? can straight play .avi files?

how do i know what codec its using?

anyway tried rockplayer, there is this 'R' there kind of irritating/annoying. any alternatives beside that?

what else can i do to free up internal memory
i have already move what i can to the sd card
but there are some games that cant be move
anything else i can do?
since dont have enough internal memory
the friend stream cant update

firmware 2.1 update1
i seen it somewhere
ah i remember
my gf using wildfire and its shows that as the android version