First you need Elunium, armor/weapon, a lot of weapon lv 2 and
Menyan, I mean..... trust and believe.
Upgrade your Armor/weapon lv4 to +6, I prefer make it from +4 -> +6, "if its shiit = its shiit", +6 or break, that it.
Upgrade weapon lv 2 to +8 for "sacrifice" purpose, you need at least 3 or 5.
Go to refine place, and make sure no one person upgrading their stuff at same time with you. I prefer Morroc.
Break your +8 Lv2 weapons 3 time, and the upgrade your +6 Armor/weapon lv4.
note: If you are a Master Smith, you can do it your self.
•If your sacrifice weapon success (become +9) you need to repeat from the beginning.
•You can use +9 later for repeat the method but using +9 instead +8.
•or maybe something weird become like this