Is there a flash lite installation package for smartphones of android 2.1? I don't know whether installation package for different smartphones of the same OS/version is the same.

But if that's not the case,mine is HTC g3.

Note: I've already tried to install flash player 10.1 but failed,so I'm targeting flash lite now.
Flash is only available for Android 2.2+.   You won't be able to install it on any older version of Android.