[PROBLEM] what's the safe upgrade procedure?

[namtih]

(27th Mar, 2015 12:23 AM)rastarr Wrote:  Note: The Sticky thread refers to making sure I read the FAQ which contains nothing about upgrading.

Check the last entry of the FAQ:
"Why should I not use apt-get"

So using the upgrade process of the xbian-config tool should be fine.
If you want to be safe shutdown your system and create a full backup of your SDCard first with this little tool:
http://sourceforge.net/projects/win32diskimager/