https://dokuwiki.stream/wiki/5...._Item_Upgrader_Myths
Pokemon GO Upgrade Items and Components An upgrade item is a special item that will make certain Pokemon develop. The upgrade can be obtained by spinning a photo disc. It's sometimes given as a prize during Pokemon GO events. Upgrades can be used on armors, weapons, trinkets, and gathering tools to increase the level of their item. The upgrade cost Flightstones and crests, based on the kind of item. Upgrade components Upgrade components can be inserted into weapons, armors, trinkets and gathering tools in order to add