How to upgrade Plesk 8.2.1 to 8.4

[baden32]

After upgrading PHP to PHP 5.2.5, it seems that a few services (ie Horde, webmail) are not working anymore.

It seems and I hope upgrade Plesk from 8.2.1 -> 8.4 could solve these problems.

Could someone explain me how to upgrade my Plesk installation?
Should I first migrate 8.2.1 -> 8.3 and then 8.3 -> 8.4?
I think to using the Plesk control panel under "Server -> Updater".
At the moment I can see a green icon for 8.2.1 and 2 red icons for 8.3 and 8.4.
Thank you in advance for your support.
Joel

 

[baden32]

According to Parallels support team. I just used Plesk control Panel, go into server -> updater menu and click the 8.4 link.
Then you can choose the packages you need (I selected everything) and start the upgrade. It was done in about 30-40 minutes. Services like email, web were juste stopped a few minutes.
Using Plesk 8.4 solved the problem of Horde Webmail (not compatible with PHP 5.2.5).
Everything is ok now, upgrade was very easy.