The Upgrade Item in Pokemon GO
The upgrade item in Pokemon GO is a special enhancement item that helps certain monsters in the pocket become more powerful. It's a crucial bridge to mastering evolution and expanding the Pokedex.
Players can purchase upgrade items by spinning Photo Discs at PokeStops and Gyms for seven days in a row and also through events-specific Field Research tasks. These items are rare but they do drop.
It is used to evolve Porygon into Porygon2
In Pokemon Go players can use a special item called the Upgrade to transform certain Pokemon into more powerful forms. This isn't a difficult process, but does require some steps. It gives a new dimension to the gameplay.
One of the most unique Pokemon in the Pokemon franchise is Porygon, which can be transformed into Porygon2 and then into Porygon-Z. These evolutions require a range of items to unlock, such as the Dubious Disc and Upgrade. Although these items aren't common, they're not impossible to find in the game.
The Upgrade is a very rare item that allows you to unlock the second evolution stage for the Pokemon Porygon. To get this item, players must capture and transfer a Porygon. Each capture and transfer will result in one Candy and it is recommended to collect a large number of the critters. Trainers can attempt to get this item by spinning PokeStops. These have a chance to drop the item as well as other rewards.
The Dubious Disc is another rare item in Pokemon GO that can be used to transform Porygon into its more powerful form. To obtain this item, players have to collect 50 pieces of Porygon Candy. This can be done by collecting Porygon and transferring them to Professor Willow, or walking with the Pokemon as their companion. Trainers can also acquire this rare item by spinning PokeStops though it's a bit more difficult to get one.
It's a fun way enhance your Pokemon GO experience. It's not difficult but you'll need some special items and money from the game.
Porygon unlike other Pokemon in the series can only transform into its final form by using an item known as Upgrade. It is extremely rare and can only be obtained by spinning PokeStops, or by working on research Breakthroughs. You can also acquire the item by trading a Porygon with the item or if you make use of an item that is a Special Trade item.
This is a rare drop from tier 4.
An upgrade item is a product that is used to enhance equipment by adding attributes 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 and gathering tools. An upgrade can be inserted in any slot on an equipped unit. However, some upgrades require an item that is above an aforementioned level to be added. The majority of upgrade components can be replaced however, doing so could destroy the previous one. Only a few upgrade types can be salvaged using high-tier salvage tools, for instance Black Lion Salvage Kit or Ascended Salvage Tool.

Items can be upgraded by combining the upgrade item with the item it is placed in, or by rerolling it using a reroll token. The rerolled item will have the same attributes as the original however, it will have a new level and tier. Each item has a maximum upgrade level and a minimum level. The levels of upgrade are determined by the item's tier which is determined by its rarity as well as its level. Each tier is divided into three levels, and each comes with a distinct amount of upgrade costs and bonuses.
Generally, upgrading an item will increase its primary stat by a fixed amount, and will also give a random extra stat. As an item's tier increases and the cost of upgrading it will rise. However, there are discounts for certain items and with each upgrade, the number of upgrades needed will decrease.
The upgrade item can be obtained by spinning Photo Discs in PokeStops or Gyms. However it has a 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 every day, or through research tasks that are specific to an event.