Pokemon GO Upgrade Items and Components
A special Item Upgrader Mod can be used to evolve certain Pokemon. The upgrade is obtained by spinning a photo disc. It's often given as a prize at Pokemon GO events.
Upgrades can be used on armors, weapons, trinkets, and gathering tools in order to boost their level. The upgrade costs Flightstones or crests, based on the kind of item.
Upgrade components
Upgrade components can be slotted into weapons, armor trinkets and gathering tools to provide bonus effects or attributes while the equipment is being used. The Best item upgrade being upgraded must have an available upgrade slot to accommodate the component, and the majority of upgrade components require the item upgrader mod being upgraded to be at the specified level. Some upgrade items also have special effects when they are added to an Best item upgrade of equipment.