Re: i want to upgrade my android version 2.2
A phone designed to work with 2.2 probably has 512MB of RAM and 150MB of storage, or something close. That's not enough to update to anything past 2.3, which isn't going to give you much. It's like putting Windows 8.1 on a computer designed for Windows 95 - with a huge 500MB hard drive and 256MB of RAM. You may make it work, but you won't live long enough to see it actually do anything it'll be so slow.