Success rate : 100% Use the Jewel of Bless on your item. One Jewel of Bless is consumed to the each +1 level. * This can be used until +6
2. +7~+9 Item upgrade
Use the Jewel of Soul on your item. When it is succeeded, one Jewel of soul is consumed each +1 level but if it is failed, one level of the item will be dropped. The level of item will be 0 level from +7 * This can not be used over +9
0 ~ 6
Upgraded with Jewel of Bless (100% success) or Jewel of Soul (50% success chance). When a Jewel of Soul fails it reduces the level of the item with 1. Items at level 3 and 4 have a dark red tint. items at level 5 and 6 have a dark blue tint.
7 ~ 9
Upgraded with Jewel of Soul (50% success chance). When a Jewel of Soul fails for 7 it reduces the level of the item with 1. When it fails for 8 or 9 it reduces the level of the item back to 0. Items at level 7 and 8 have a slight glow usualy in the color of the item. Items at level 9 have a stronger glow.
10 ~ 15
Upgraded at the Chaos Goblin. The +10 upgrade requires 1 Jewel of Chaos, 1 Jewel of Bless and 1 Jewel of Soul. The +11 upgrade requires 1 additional Jewel of Bless and 1 additional Jewel of Soul (the +15 upgrade requires 1 Chaos, 6 Bless and 6 Soul). Usualy the chances of success are between 40% and 70%. Warning! When an item fails to be upgraded you lose the item. Every 2 upgrades have a different more attractive light effect : P Also every upgrade gives you +5% final defense.
+1 up to 4 for HP regeneration
Upgraded with Jewel of Life (50% success chance). When a Jewel of Life fails it reduces the level of the option with 1.
+4 up to 16 for damage & defense
+5 up to 20 for defense rate
This attribute is not upgradable
Items with Luck have +25% success chance on all upgrades. Also every item with Luck increases your critical hit chance with 5%. It is not a good idea to try to upgrade items without Luck.