> For the complete documentation index, see [llms.txt](https://wiki.entropia.top/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.entropia.top/sets-weapons-and-items/upgrade-system.md).

# Upgrade System

+With the "Extended Upgrade System", you can upgrade your equipment and weapons up to +20 with better stats! At levels 13, 16, 18, and 20, you will also receive an additional diamond slot each. 

To upgrade, you need **Scroll of UProtect (Ultra)**, which you can exchange at **\[Cash Shop] Laura** in Central Flarine, and Ultra Sunstones which you can farm in [Les Britannia](/custom-content/shiny/les-britannia.md), [Abyssal Cove](/custom-content/shiny/abyssal-cove.md), [Aminus](/custom-content/other/starter-dungeons/aminus-cursed-aminus.md), and [Cursed Aminus](/custom-content/other/starter-dungeons/aminus-cursed-aminus.md) (exchange at Dungeon Exchanger for chips).

**Note: The chance to upgrade your items is lower than from +1 to +10!**

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