Let me start by saying that I have read the thread a few below this one, in that thread there's talk of the update crashing and bricking phones. The thread was started quite a while ago and had been idle for a long time. Have things improved?
Has Samsung fixed it's upgrade so that's it's now less likely to brick a phone? I want to do the update, but not at the expense of bricking my phone. Should I skip Gingerbread and go to JellyBean? My Infuse is not rooted, never has been.
After UCLB3, the Gingerbread update, the Infuse has never gotten any more updates from Samsung or AT&T, and I think it's going to stay that way. Want proof that it hasn't gotten any updates after UCLB3? Go to
http://www.samsung.com/us/support/SupportOwnersFAQPopup.do?faq_id=FAQ00003312&fm_seq=3480.
The Infuse is not even part of the Galaxy series. It hasn't even received ICS. Given that, it most likely won't get Jelly Bean either. The phone is done for, in terms of updates. Gingerbread too was half-baked, in my experience with it. Its release for this phone was a big fiasco last year up until this past April. So many delays last year ended with a broken GB update in February that caused another two month delay trying to fix it. But even after it was officially released, it had a lot of bugs that needed to be fixed in future updates, but none of them were fixed, even to this day.
If you have not updated yet, DON'T! It will mess up your phone big time. Your battery life will get worse, the phone will freeze up on you more often, and the GPS will almost stop working. At least, that was my experience when I had the Infuse updated to Gingerbread.
OK, maybe your experience could be better if you do a complete factory wipe before you try the upgrade, but I overall recommend sticking with Froyo, no matter how outdated that is now. Or maybe you have a better Infuse than I do and so yours might run GB better than mine.
As for me, I made the mistake of thinking that Gingerbread would make the phone run just as well as Froyo, so I updated to it right away, with disastrous results. I now think the Infuse was originally designed to work with Froyo, not Gingerbread; the phone was the most usable when it had Froyo.