The Upgrade Item in Pokemon GO

The upgrade item is an evolving item in Pokemon GO that can make certain pocket monsters change into stronger versions. It's an important bridge to understanding the evolution process and expanding your Pokedex.
Players can upgrade their items by spinning Photo Disks in PokeStops or Gyms seven days straight and by completing Field Research tasks that are specific to an event. However they have a low rate of dropping.
It is used to transform Porygon into Porygon2
In Pokemon Go players can utilize a unique item called the Upgrade to evolve certain Pokemon into more powerful forms. This process involves a few steps however it's not difficult to do and provides an additional dimension to the game's gameplay.
Porygon is among the most unique Pokemon in the Pokemon series. It is able to evolve to Porygon2 or Porygon-Z. These evolutions require a range 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 scarce item that is used to unlock the second level of evolution for Pokemon Porygon in Pokemon GO. To get this item, players need to capture and transfer a Porygon. It is best to collect as many Porygons as possible. Each capture and transfer will yield one Candy. Trainers can try to collect 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 improve Porygon's powerful form. To obtain this item, players have to collect 50 pieces Porygon Candy. This can be achieved by collecting Porygon and transfer them to Professor Willow, or walking with the Pokemon as a companion. 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 give depth to your Pokemon GO experience. It's not difficult, but you will require some special items and in-game currency.
In contrast to other Pokemon in the series, Porygon can only be evolved into its second and final form using an item known as the Upgrade. It is extremely rare and can only be obtained through PokeStops or by doing research Breakthroughs. However, it is possible to get the item by trading a Porygon when it has the item attached or using a Special Trade Item.
This is a special drop from the Tier 4.
Upgrades are items that can be used to enhance equipment by adding new features. Players can find upgrades in the game's inventory, in karma merchants or as rewards for special events. They can be used as upgrades to armors, weapons, trinkets and gathering tools. Upgrades can be added to any slot on the unit. However, item upgrades require an item above a certain 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 with high-tier salvage kits such as the Black Lion Salvage Kit and Ascended Salvage Tool.
Upgrades can be accomplished by combining an upgrade item with the item it's placed into, or by rerolling the item using the token that rerolls. The upgraded item will have the same extra attributes as the original but it will also be upgraded to a higher level and tier. Each item has a maximum upgrade level and a minimum level. The rarity and level of the item determine the tier. Each tier is broken up 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 certain amount, and provide an extra stat that is random. As an item's tier rises, the cost to upgrade it will increase. However there are discounts on specific items and with each upgrade, the number of upgrades needed will decrease.
The upgrade item is obtainable by spinning Photo Disks in PokeStops or Gyms. However, it has a very low probability of dropping each day. It is also available 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.