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I from experience wouldn't even worry about. There are other programs that work and connect better. I use ebuddy but another one im sure a lot of ppl use is meebo. Check them out and im sure you'll be happy with one of them
you can probably do a hard reset to restore if you cant find it. I find the other two options mentioned suck the life out of the battery where gtalk is pretty light on power even though its features a very limited.
Try searching "gtalk.apk" like here. How to install gtalk.apk? - xda-developers
Maybe that will get you what you need