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How to Upgrade Items in World of Warcraft Always upgrade your best-in slot equipment first. This includes chests, helms and legs. Upgrade your weapon following. Upgrade your shoulder guards, belts and even your boots. Also upgrade your boots and gloves. Glyphs can be added to weapons and gathering tools to upgrade components. In contrast to other upgrades, glyphs are able to be removed and replaced freely. can be used to boost your character's strengths in specific areas. They can be used to boost a character's primary stat secondary stat, or both.