Originally Posted by Mirae
It will break if you fail when upgrading. :x
Edit: Kuma said it somewhere. Also, I believe the item tells you too.
In our version, it does not
break upon failure. Someone on the OGPlanet forums has tested it so my statement stands corrected.
, in order to upgrade your earring/ring +X to +(X+1), you'll need another earring/ring +X (X stands for a number 0~8).
To upgrade a Guild Earring/Ring +2, you'll need another Guild Earring/Ring +2 to make it +(2+1) which is +3.
You will lose the "upgrade fodder" earring/ring upon failure, but not your original earring/ring. So, the fixed 60% success rate will be really annoying (as will getting two of the same upgrade level), but at least your original one won't break.