I notice this question has been asked a few times but I don't really like the solution with two Eclipses in parallel. I just want my Galileo upgraded to Helios with preservation of all settings, plugins and workspaces, without the mumbo-jumbo like copying plugins manually and stuff. I've got the Android plugin, the C/C++ plugin, the PyDev plugin and what not more.
Is there a quick and sure way to upgrade Eclipse like this? I've found some instructions on the Eclipse wiki, but it doesn't seem to work with my system (Ubuntu 10.04; I add the Helios site and then Check for Updates, but it doesn't take Helios as an update for Eclipse). Has someone found a solution for this?
UPDATE: The way described in the wiki seems to work on my Windows-installed Eclipse, Check For Updates lists "Eclipse SDK v.3.6.0" as an available update.
You cannot. You have to download, uncompress and run it without the ubuntu repository. In this scenario you can upgrade without problems ;-)
If you want to use Helios through the ubuntu repository you have to wait beyond Maverick (10.10) as you can see here: https://launchpad.net/ubuntu/+source/eclipse
Hopefully this will save somebody some trouble... I installed Helios from the zip but found that Eclipse couldn't install new plugins because of screwy dependancies. I found that I had to remove the old Eclipse folders from ~/.eclipse. Hope this helps somebody! (My system: Ubuntu 10.04, 64bit)
After installing the ppa version of 3.6 supplied by the Eclipse Team I was unable to run eclipse, got splash screen then it closed. I then downloaded the latest version of eclipse 3.6. I then extracted eclipse into the ppa installed directory. Make sure you over-write all packages. Once this was down I tried eclipse again and it was successful.
Just a word of warning that I tried upgrading to 3.6.0 via the "Eclipse Team" ppa on Launchpad.net and had absolutely no luck. Details upon request.
来源：https://stackoverflow.com/questions/3680250/how-to-upgrade-eclipse-from-3-5-galileo-to-3-6-helios-the-proper-way