IMO,if you are happy with the phone now,and do not NEED adobe flash for anything,do not update! The 2.2 has many glitches in it,my phone as well as most others I know now have issues with the music player if you use it,and the overall operation of the phone,mine has slowed down,it isnt as responsive,the gallery takes forever to load pictures.The way I see it is you have probably tha last of the 2.1 versions,so 99% of the bugs were worked out,and it operates pretty good,although the 2.2 is an upgrade,it isnt as refined or tested,which is very apparent once you download it....I personally do not wish to go back to 2.1,even with the glitches,as long as the phone still operates,i like the flash player,and the battery life seems to be improved a little,which is just what the phone needed...