The Upgrade Item in Pokemon GO
The upgrade item in Pokemon GO is a special enhancement item that helps certain pocket monsters increase their power. It's an essential way to master evolution and expanding the Pokedex.

Players can purchase upgrade items by spinning Photo Discs in PokeStops and Gyms for seven days in a row, and also through specific event-related Field Research tasks. These items are rare, but they do drop.
It is used to transform Porygon into Porygon2.
In Pokemon Go, the player can use an item called Upgrade to transform their Pokemon into more powerful versions. This process requires a few steps that aren't difficult to master and adds an additional dimension to the game's gameplay.
One of the more distinctive Pokemon in the Pokemon franchise is Porygon that can be transformed into Porygon2 and later into Porygon-Z. These evolutions require a number of items to unlock, such as the Upgrade and Dubious Disc. While these items are rare but they're not impossible to find in the game.
The Upgrade is a rare item that unlocks the second evolution stage of the Pokemon Porygon. To get this item, players need to capture and transfer the Porygon. It is best 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 have a chance to drop the item, together with other rewards.
The Dubious Disc is another rare item in Pokemon GO that can be used to evolve Porygon into its more powerful form. To acquire this item, players must collect 50 pieces of Porygon Candy. This can be accomplished by taking a Porygon and then transfer them to Professor Willow, or walking with the Pokemon as their buddy. item upgrading can also try to obtain this rare item by spinning PokeStops, though it's a bit more difficult to get one.
It's a fun way give depth to your Pokemon GO experience. It's not difficult to do but you'll require some special items and in-game money.
Unlike most Pokemon in the series, Porygon can only be transformed into its second and final form by using an item known as the Upgrade. This item is extremely scarce and can only be obtained by spinning PokeStops, or by completing research Breakthroughs. You can also obtain the item if you trade a Porygon with the item attached, or if you use an item that is a Special Trade item.
This is a special drop from Tier 4.
An upgrade item is a product that is used to enhance equipment by adding additional attribute bonuses. The players can find upgrades in the game's inventory, karma merchants, or as rewards from special events. They can be added to armor, weapons trinkets and gathering tools. Upgrades can be added to any slot on an item. However, some upgrades require an item that is above an aforementioned level to be added. The majority of upgrade components can be altered however the prior component will be destroyed. Only a handful of types of upgrade are salvageable using 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 token for reroll. The upgraded item will have the same extra stats as the first, but it will also have a different level and tier. Each item has a maximum upgrade level and a minimum level. The rarity and level of the item determine the level. Each tier is broken up into three levels, and each comes with a distinct cost for upgrades and bonuses.
Generally, upgrading an item will increase its primary stat by a certain amount, and provide a random extra stat. As the tier of an item increases it will cost more to upgrade it will rise. However there are discounts on specific items and with each step the number of upgrades needed will decrease.
The upgrade item is obtained by spinning Photo Discs at PokeStops and Gyms, though it is unlikely to drop every day. It is obtained by spinning at least one PokeStop Photo Disc or gym Photo Disc each day for seven days, as well as through Research Tasks and task-specific to events.