Hi,
I would like to update my joomla version from 2.5.11 to 3.x
I must first upgrade joomla or component k2?
The online site is www.mavacar.it, but I'm working on demo.bettybyte.net

Thank's

Update K2 and all other extensions.
Update to Joomla! 2.5.28 and then to 3.x

Hi Krikor,
thank's for your reply.
Unfortunately compare The error "JFolder::create: Non è stato possibile creare la cartella
Attenzione: fallito spostamento del file!"

This is my step:

1. in joomla 2.5.11 I try to update k2 component (I downloaded the latest version here www.joomlaworks.net/extensions/free/k2 "Download v2.7.0 for Joomla 3.x"
2. Report the error"JFolder::create: Non è stato possibile creare la cartella Attenzione: fallito spostamento del file!"

I work here demo.bettybyte.net/
maybe I need to update directly on www.mavacar.it site?

thank's for your support

This is a Joomla! error, possibly a permissions one.
Joomla! cannot write into folders. The correct file/ folder permissions should be 644/755