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Is there anybody who tried upgrading from Android 2.2 on this device recently? Or do you consider it a wise decision in terms of risks / gains involved?

I found tutorials that seem pretty up to date:

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closed as not a real question by Al E., Chahk, Bryan Denny Apr 24 '13 at 17:11

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

What's your question? If you're asking for opinions as to whether upgrading is a good idea or not, please note that we like questions that prompt answers that are based on fact, not opinion. (FAQ) – Al E. Oct 23 '12 at 14:48
up vote 0 down vote accepted

You have to take into consideration that the 4.1 system you'd be installing isnt a stock build, it is a ROM created by a developer. Cyanogenmod is generally pretty stable, but you would want to do your homework at the XDA Developers site to determine if there are any bugs or known issues, or how the performance of 4.1 is on your device by reading users' reviews.

This would also require you to root your phone, which may invalidate your warranty, which is another consideration.

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