u need to uprade your mining crafting skills first to get some "upgrade things" that used to +1 +2 +3 your normal items
not sure about it coz i have no idea myself
To make gear +1 use intensified crystals got from 3 tech stones plus 100k and use moonlight box to make, 80% chance to make a intensified crystal.
To +2 and higher use senior intensified crystal if you want to keep your item your upgrading, got from Mall.
What this senior crystal does is protect your item from being distroyed if it fails to upgrade
There are some things to be found in the wiki, you know.
The sad part is, I put that there because that's the most common question I was asked, and it's so kinda, hidden, nobody goes to it.
100% +1 75% +2 50% +3 + 4 25% +5 not sure, best if get luck on +3 use sinor +4 + 5 25 Plat item.
at +3 for armore see start to glow +3 body see glowing orbs flowing around your toon high + body get more colored orbs.
jewarly none + item | wep - gw = growing weapon - add soul | Phys att | Phys | crit | hit | skill | make GW +4 see glow