I have a Galaxy Europa running Android v2.2. I want to upgrade it to Gingerbread v2.3. In Windows I would use Samsung Kies for this task. How do I do it in Ubuntu?
I would advise you to download the firmware of Samsung Galaxy Europa Gingerbread from Sammobile , then install Heimdall to install the firmware onto your device. But make sure your phone is unlocked before doing so.