The Upgrade Item in Pokemon GO
The upgrade item is an evolution item in Pokemon GO that can make certain pocket monsters transform into stronger versions. It's a crucial step towards mastering evolution and expanding the Pokedex.

Players can acquire upgrade items by spinning Photo Discs in PokeStops and Gyms for seven days in a row, and through events-specific Field Research tasks. However these items are not very popular and have a low drop rate.
Porygon2 can be evolved us ing this item
In Pokemon Go players can make use of an item known as Upgrade to transform Pokemon into more powerful versions. This isn't a difficult process, but does require some steps. It provides a fresh dimension to the game.
One of the most distinctive Pokemon in the Pokemon franchise is Porygon, which can be evolved into Porygon2 and later into Porygon-Z. These evolutions require a variety of items to unlock, such as the Dubious Disc and Upgrade. Although these items aren't common however, they're not impossible 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 get this item, players need to capture and transfer Porygon. Each capture and transfer will result in one Candy and it is recommended to collect a lot of the critters. Trainers can also try to get this item by spinning PokeStops that have the possibility of dropping the item along with other rewards.
The Dubious Disc, another rare item in Pokemon GO, can be used to improve Porygon's powerful form. To obtain this item, players must to collect 50 pieces Porygon Candy. This can be done by taking a Porygon and then transfer them to Professor Willow, or walking with the Pokemon as a companion. Trainers can also spin PokeStops to attempt to hit this item, however it is a little more difficult.
It's a fun way enhance your Pokemon GO experience. It's not too difficult to do, but you will require some special items as well as in-game currency.
In contrast to other Pokemon in the series, Porygon can only be evolved into its second and final form with an item called the Upgrade. This item is incredibly rare and can be obtained by spinning PokeStops, or by completing Research Breakthroughs. However, it is also possible to acquire the item by trading with a Porygon when it has the item attached or by using the Special Trade item.
It is a special tier 4 drop
An upgrade item is a product that can be used to upgrade equipment by adding attributes bonuses. Players can find upgrades within the game's inventory, karma merchants, or as rewards from special events. They can be added as upgrades to weapons, armors, trinkets and gathering tools. An upgrade can be inserted into any slot on an equipped device. However certain upgrades require a product above a certain level to be added. Most upgrade components can be replaced however, doing so could destroy the previous one. Only a handful of types of upgrade are salvageable us ing salvage kits of high-end quality, such as 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 upgraded item will have the exact stats as the first, but will also have a different level and tier. Each item has a maximum level of upgrade and a minimum level. The rarity and level of the item determine the level. Each tier is divided into three levels, and each level has its own set of upgrade costs and bonuses.
In general, upgrading an item increases its main stat by a certain amount and offers a random additional stat. 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 required decreases with each step.
The upgrade item is obtained by spinning Photo discs at PokeStops and Gyms but it is unlikely to be dropped every day. It can also be obtained as an incentive for a seven-day streak of spinning at least one PokeStop or gym Photo Disc each day, and through specific research tasks for events.