The Upgrade Item in Pokemon GO
The upgrade item is a special evolving item in Pokemon GO that can make certain monsters in your pocket evolve into stronger versions. It's an important step to mastering the evolution and expanding your Pokedex.
Players can acquire upgrade items by spinning Photo Disks at PokeStops and Gyms for seven days in a row, and through event-specific Field Research tasks. However these items have a low drop rate.
It is used to evolve Porygon into Porygon2
In Pokemon Go, players can utilize a unique item called the Upgrade to transform certain Pokemon into their more powerful versions. The process isn't difficult but requires some steps. It provides a fresh dimension to the game.
Porygon is one of the most distinctive Pokemon in the Pokemon series. It is able to evolve to Porygon2 or Porygon-Z. To unlock these evolutions, you'll need possess a few items. These include the Dubious disc and Upgrade. While these items are rare, they're not impossible to find in the game.
The Upgrade is a rare item that unlocks the second evolution stage for the Pokemon Porygon. To unlock this item, players need to capture and transfer Porygon. It's best to gather as many Porygons as possible. Each capture and transfer will result in one Candy. Trainers can also get this item by spinning PokeStops, that have the possibility of dropping the item in addition to other rewards.
The Dubious Disc is another rare item in Pokemon GO that can be used to evolve Porygon into a more powerful form. To acquire this item players must collect 50 pieces of Porygon Candy. This can be achieved by catching Porygons, then transferring them to Professor Willow or walking with your Pokemon as a friend. Trainers can also spin PokeStops to try and get this item, however it is a little more difficult.
The evolution of a Porygon into its secondary form is a fun process that adds some depth to the Pokemon GO experience. It's not difficult to do but you'll require some special items and in-game money.
In contrast to other Pokemon in the series, Porygon can only be evolved into its final form using an item known as the Upgrade. It is extremely scarce and can be found through PokeStops spinning or completing research Breakthroughs. You can also acquire the item if you trade the Porygon with the item attached or if you make use of the Special Trade item.
This is a unique drop from the tier 4.
Upgrades are items that can be used to improve equipment, adding new attributes. Upgrades can be found in the game's Inventory from karma sellers, or as rewards for special events. They can be added to armor, weapons trinkets and gathering tools. Upgrades can be added to any slot on the unit. However, some upgrades require an item that is above an aforementioned level to be added. Most upgrade components can be replaced but doing so will destroy the previous one. There are a few kinds of upgrade can be salvaged by using salvage kits that are of high quality such as the Black Lion Salvage Kit and Ascended Salvage Tool.
Items can be upgraded by combining an upgrade item with the item that it is placed in, or by rerolling it using a reroll token. The rerolled item has the same extra stats however it also has a new level and tier. Each item comes with an upgrade level maximum as well as a minimum level. Upgrade levels are determined by the item's tier which is determined by its rarity and level. Each tier is broken down into three levels, and each has its own amount of upgrade costs and bonuses.

Generally upgrading an item will boost its primary stat by a predetermined amount, and also provide a random extra stat. As an item's tier rises and the cost of upgrading it will increase. However, there are discounts for certain items and with each step the amount of upgrades required will decrease.
The upgrade item can be obtained by spinning Photo discs at PokeStops and Gyms, though it is very unlikely to be dropped every day. It can be earned by spinning at least one PokeStop Photo Disc or gym Photo Disc each day for a 7-day streak and also through research tasks and other task-specific events.