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Root How to upgrade from Android 2.2?

If you are on linux, you are going to have to learn to flash roms using Heimdall, which is an open source version of Odin, which is in turn a leaked software from Samsung. Don't worry, it's pretty straight forward to use. Just gotta make sure your battery is charged, and you don't accidentally unplug the phone during the process.

You can find stock roms on News - www.SamFirmware.com. If you hate hotfile (like me), you can also find mirrors for the more popular roms on XDA I9000 general.
 
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