The Upgrade Item in Pokemon GO
The upgrade item in Pokemon GO is a special enhancement item that helps certain creatures in your pocket increase their power. It's an important step to mastering the evolution and expanding your Pokedex.
Players can upgrade their items by spinning Photo Discs at PokeStops or Gyms all day long and through Field Research tasks that are specific to an event. These items are scarce, but they do drop.
It is used to transform Porygon into Porygon2.
In Pokemon Go, players can make use of a special item called the Upgrade to transform certain Pokemon into their more powerful versions. This process requires a few steps, but it's not difficult to do and provides some extra depth to the game's gameplay.
Porygon is one of the most unique Pokemon in the Pokemon series. It is able to evolve to Porygon2 or Porygon-Z. To unlock these evolutions, you'll need to have a few items. These include the Upgrade and Dubious disc. Although these items aren't common but they're not impossible to find in the game.
The Upgrade is a rare item that can be used to unlock the second stage of evolution for Pokemon Porygon in Pokemon GO. To obtain this item, players have to capture and transfer Porygon. Each capture and transfer will yield one Candy, so it's best to collect a large number of the creatures. Trainers can also try to obtain this item by spinning PokeStops which have a chance of dropping the item along with other rewards.
The Dubious Disc, another rare item that is found in Pokemon GO, can be used to improve Porygon's powerful form. To acquire this item players must collect 50 pieces of Porygon Candy. This can be accomplished by catching Porygons, transferring them to Professor Willow or walking with your Pokemon as a buddy. Trainers can also get this rare item by spinning PokeStops however it's more difficult to get one.
It's a great way to enhance your Pokemon GO experience. item upgrader requires a few specific items and in-game currency but it's not terribly difficult to accomplish.
Unlike most Pokemon in the series, Porygon can only be transformed into its final form using an item known as the Upgrade. This item is extremely rare and is only available by spinning PokeStops, or by completing research Breakthroughs. It is also possible to acquire the item by trading with a Porygon while it has the item attached or using a 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 additional attribute bonuses. Upgrades are available in the game's Inventory, from karma merchants, or as rewards for events. They can be added as upgrades to weapons, armors trinkets, gathering tools and trinkets. An upgrade can be put into any slot of an equipped device. However, some upgrades require a product above an aforementioned level to be added. The majority of upgrade components can be replaced but doing so will destroy the previous one. Only a few types of upgrade are salvageable by using salvage kits that are of high quality like the Black Lion Salvage Kit and Ascended Salvage Tool.
Items can be upgraded by combining an upgrade item with the item it is placed in, or by rerolling it with a reroll token. The new item has the same extra stats, but also a new level and tier. Every item has an upgrade level maximum and a level minimum. The levels of upgrade are determined by the item's level, which is determined by its rarity as well as its level. Each tier is broken down into three levels, and each comes with a distinct set of upgrade costs and bonuses.

Generally, upgrading an item will increase its main stat by a certain amount, and will also give an extra stat that is random. The cost of upgrading an item is increased with the tier it is placed in however, there are discounts available for certain 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 however it is unlikely to drop every day. It is also available as reward for a 7-day streak of spinning at minimum one PokeStop or gym Photo Disc each day, and through research tasks that are specific to an event.