The Upgrade Item in Pokemon GO
The upgrade item is a special evolutionary item in Pokemon GO that can make certain monsters in your pocket evolve into stronger versions. It's an essential step towards mastering evolution and expanding the Pokedex.
The players can upgrade their items by spinning Photo Disks in PokeStops or Gyms for a whole week and also by completing Field Research tasks that are unique to an event. These items are rare, but they do drop.
Porygon2 can be developed by using this item
In Pokemon Go players can utilize a unique item called the Upgrade to evolve certain Pokemon into their more powerful versions. The process isn't difficult but requires some steps. It gives a new dimension to the game.
One of the more unique Pokemon in the Pokemon franchise is Porygon that can be transformed into Porygon2 and later into Porygon-Z. These evolutions require a variety of items to unlock, including the Upgrade and Dubious Disc. Although these items are scarce but they're not impossible to find in the game.
The Upgrade is a rare item that is used to unlock the second stage of evolution for Pokemon Porygon in Pokemon GO. To unlock this item, players need to capture and transfer the Porygon. It is recommended to capture as many Porygons possible. Each capture and transfer will yield one Candy. Trainers can try to obtain this item by spinning PokeStops. These have a chance to drop the item, as well as other rewards.
The Dubious Disc, another rare item found in Pokemon GO, can be used to develop Porygon's more powerful form. To obtain this item, players must collect 50 pieces of Porygon Candy. This can be accomplished by catching Porygons and transferring them Professor Willow or walking with your Pokemon as a buddy. Trainers can also spin PokeStops in order to try and hit this item, however it's a bit more difficult.
It's a fun way enhance your Pokemon GO experience. It requires a few special items and in-game currency however, it's not too difficult to achieve.
Porygon, unlike most Pokemon in the series, can only change into its final form using an item known as Upgrade. This item is extremely rare and is only available through PokeStops or by doing research Breakthroughs. However, it is also possible to obtain the item by trading with a Porygon with the item attached, or by using an item that is a Special Trade Item.

This is a unique drop from Tier 4.
Upgrades are items that can be used to enhance equipment, adding new features. Upgrades can be found in the inventory of the game, from karma merchants or as rewards for special events. item upgrades can be added to weapons, armor trinkets, trinkets, or gathering tools. Upgrades can be added to any slot on an item. However, some upgrades require an item above a certain level to be added. Most upgrade components can be replaced but doing so will destroy the previous one. Only a few types of upgrades can be salvaged by using top-tier salvage tools, like the Black Lion Salvage Kit or Ascended Salvage Tool.
Upgrades can be made by by combining an upgrade item with the item it's placed into or by rerolling the item with a token for rerolling. The rerolled item will have the same additional stats however it also has a new level and tier. Each item has an upgrade level maximum as well as a minimum level. The item's rarity and level determine the tier. Each tier is broken down into three levels, and each level has its own amount of upgrade costs and bonuses.
Generally, upgrading an item will increase its main stat by a predetermined amount, and provide a random extra stat. The cost to upgrade an item will increase as its tier rises however there are discounts for some items and the number of upgrades needed is reduced with each step.
The upgrade item is obtained by spinning Photo Discs at PokeStops and Gyms but it has a low chance to be dropped every day. It can be obtained by spinning at least one PokeStop Photo Disc or gym Photo Disc every day for 7 days as well as by completing Research Tasks and task-specific to events.