The Upgrade Item in Pokemon GO
The upgrade item in Pokemon GO is a special evolution item that helps certain creatures in your pocket increase their power. It's a crucial step towards learning the evolution and expanding your Pokedex.

The players can upgrade their items by spinning Photo Disks in PokeStops or Gyms all day long and through Field Research tasks that are unique to an event. However they have a low rate of dropping.
Porygon2 can be developed using this item
In Pokemon Go the player can make use of an item known as Upgrade to transform Pokemon into more powerful forms. This process requires several steps however it's not difficult to accomplish and adds an additional dimension to the game's gameplay.
Porygon is one of the most unique Pokemon in the Pokemon series. It can be evolved to Porygon2 or Porygon-Z. To unlock these changes, you'll need have a few things. These include the Upgrade and Dubious disc. These items are scarce, but they are 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 unlock this item, players must capture and transfer the Porygon. It is recommended to collect as many Porygons as possible. Each capture and transfer will result in one Candy. Trainers can attempt to get this item by spinning PokeStops. They are likely to drop the item, together with other rewards.
item upgrades is another rare item in Pokemon GO that can be used to evolve Porygon into its more powerful form. To get this item, players have to collect 50 pieces Porygon Candy. This can be done by catching Porygons, transferring them Professor Willow or walking with your Pokemon as a buddy. Trainers can also obtain this rare item by spinning PokeStops though it's a bit more difficult to find one.
Evolving a Porygon into its secondary form is a fun process that adds a bit of depth to the Pokemon GO experience. It requires a few unique items and in-game currency but it's not overly hard to accomplish.
In contrast to other Pokemon in the series, Porygon can only be transformed into its final form with an item known as the Upgrade. This item is extremely rare and can only be obtained by spinning PokeStops, or by working on Research Breakthroughs. However, it is also possible to obtain the item by trading a Porygon while it has the item attached or by using an item that is a Special Trade item.
It is a Tier 4 exclusive drop
Upgrades are items that can be used to enhance equipment, adding new attributes. Upgrades are available in the game's Inventory, from karma merchants or as rewards for events. They can be added to armor, weapons trinkets, trinkets, or gathering tools. An upgrade can be inserted into any slot on an equipped device. However certain upgrades require an item that is above a certain level to be added. Most upgrade components can be replaced, but doing so will destroy the previous one. Only a few types of upgrades can be salvaged by using top-tier salvage tools, such as Black Lion Salvage Kit or Ascended Salvage Tool.
Items can be upgraded by combining the upgrade item with the item that it is placed in, or by rerolling it with a reroll token. The rerolled item will have the same extra stats as the original, but it will also be upgraded to a higher level and tier. Each item has an upgrade level maximum and minimum level. The rarity and level of the item determine the level. Each tier is divided into three levels. Each level comes with its own upgrade cost and bonuses.
Generally, upgrading an item will boost its primary stat by a certain amount, and also provide a random extra stat. As the tier of an item increases and the cost of upgrading it will increase. However, there are discounts for certain items, and with each step, 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 very low chance of dropping each day. It is also available as a reward for a seven-day streak of spinning at minimum one PokeStop or gym Photo Disc every day, or through specific research tasks for events.