The Upgrade Item in Pokemon GO
The upgrade item is a special evolution item in Pokemon GO that can make certain creatures in the pocket evolve into stronger versions. It's a crucial step towards mastering evolution and expanding the Pokedex.
Players can upgrade their items by spinning Photo Disks at PokeStops and Gyms for seven days in a row, and also by completing event-specific Field Research tasks. These items are rare but they do drop.
Porygon2 can be developed using this item
In Pokemon Go, players can utilize a unique item called the Upgrade to transform certain Pokemon into their more powerful forms. This process is not difficult but requires some steps. It provides a fresh dimension to the gameplay.

One of the more distinctive Pokemon in the Pokemon franchise is Porygon, which can be transformed into Porygon2 and later into Porygon-Z. These evolutions require a variety of items to unlock, such as the Upgrade and Dubious Disc. item upgrades are scarce, but are not impossible to find in the game.
The Upgrade is a rare item that allows you to unlock the second evolution stage of the Pokemon Porygon. To get this item, players need to capture and transfer a Porygon. Each capture and transfer will yield one Candy which is why it's best to gather a large amount of the critters. Trainers can also get this item by spinning PokeStops, which have a chance of dropping the item, along with other rewards.
The Dubious Disc, another rare item found in Pokemon GO, can be used to evolve Porygon's more powerful form. To obtain this item, players must gather 50 pieces of Porygon Candy. This can be done by catching Porygons, transferring them to Professor Willow or walking with your Pokemon as a companion. Trainers can also spin PokeStops to attempt to get this item, but it's a bit more difficult.
The evolution of a Porygon into its secondary form is an enjoyable process that adds a bit of depth to the Pokemon GO experience. It requires a few special items and in-game currency but it's not overly hard to accomplish.
Contrary to the majority of Pokemon in the series, Porygon can only be transformed into its final form by using an item called the Upgrade. This item is extremely rare and can be obtained through PokeStops spinning or doing Research Breakthroughs. However, it is also possible to obtain the item by trading with a Porygon while it has the item attached or using the Special Trade Item.
This is a unique drop of level 4.
An upgrade item is a product that can be used to upgrade equipment by adding attributes bonuses. Players can find upgrades in the game's inventory, karma merchants or as rewards from special events. They can be added to armor, weapons trinkets, trinkets, or gathering tools. An upgrade can be inserted into any slot on an item that is equipped. Certain upgrades require that an item of a higher level be added. The majority of upgrade components can be replaced but doing so will destroy the previous one. Only a handful of types of upgrade are salvageable by using salvage kits that are of high quality such as the Black Lion Salvage Kit and Ascended Salvage Tool.
Items can be upgraded by combining the upgrade item with the item it is placed in, or rerolling it with a reroll token. The rerolled item will have the same stats as the original, but will also have a different level and tier. Every item has an upgrade level maximum and a level minimum. The rarity and level of the item determine the level. Each tier is divided into three levels, and each has its own amount of upgrade costs and bonuses.
In general, upgrading an item increases its main stat by a certain amount and gives you a random extra stat. The cost of upgrading an item will increase as its tier increases, but there are discounts available for certain items and the amount of upgrades required decreases with each step.
The upgrade item can be obtained by spinning Photo Discs at PokeStops and Gyms but it has a low chance to drop each day. It can also be obtained as reward for a 7-day streak of spinning at least one PokeStop or gym Photo Disc per day, and through event-specific Research Tasks.