Incontestable Evidence That You Need Upgrade Item

The Upgrade Item in Pokemon GO
The upgrade item in Pokemon GO is a special enhancement item that helps certain creatures in your pocket to become more powerful. It's an essential bridge to mastering evolution and expanding the Pokedex.
The players can upgrade their items by spinning Photo Disks in PokeStops or Gyms seven days straight and also by completing Field Research tasks that are unique to an event. However, these items have a low rate of dropping.
Porygon2 can be evolved by using this item
In Pokemon Go, players can make use of a special item called the Upgrade to transform certain Pokemon into their more powerful forms. The process involves several steps that aren't difficult to master and adds an additional dimension to the game's gameplay.
One of the most unique Pokemon in the Pokemon franchise is Porygon, which can be transformed into Porygon2 and later into Porygon-Z. To unlock these changes, you'll need possess a few items. These include the Upgrade disc and Dubious disc. Although these items are scarce however, they're not impossible find in the game.
The Upgrade is a very rare item used to unlock the second stage of evolution for the Pokemon Porygon. To obtain this item, players need to capture and transfer Porygon. Each capture and transfer will yield one Candy, so it's best to gather a large amount of the critters. Trainers can try to obtain this item by spinning PokeStops. These have a chance to drop 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 get this item, players need to 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 friend. Trainers can also try to get this rare item by spinning PokeStops though it's a bit more difficult to find one.
It's a fun way to give depth to your Pokemon GO experience. It's not difficult, but you will require some special items as well as in-game currency.
Unlike most Pokemon in the series, Porygon can only be evolved into its final form by using an item called the Upgrade. This item is incredibly rare and can be found through PokeStops spinning or working on research Breakthroughs. You can also get the item if you trade an Porygon with the item attached or when you use a Special Trade item.
This is a special drop from the level 4.
Upgrades are items that can be used to improve equipment by adding new features. Players can find upgrades in the game's inventory, karma merchants, or as rewards from special events. They can be used as upgrades to weapons, armors, trinkets and gathering tools. Upgrades can be added to any slot on the unit. Certain upgrades require that an item of higher quality be added. The majority of upgrade components can be altered however the original component will be destroyed. Only a few types of upgrade are salvageable with high-tier salvage kits, 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 token for reroll. The new item has the same extra stats and features a different level and tier. Each item has a maximum upgrade level and a minimum item level. Upgrade levels are determined by the item's tier, which is determined by its rarity and. Each tier is divided into three levels. Each level has its own upgrade cost and bonuses.
Generally, upgrading an item will boost its primary stat by a predetermined amount, and will also give a random extra stat. The cost to upgrade an item increases as its tier rises however, there are discounts 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 but it is unlikely to drop each day. It is obtained by spinning at least one PokeStop Photo Disc or gym Photo Disc every day for 7 days, as well as through research tasks and other task-specific events.