Update one introduced a more stable build with a lot fewer server crashes. The amount of app crashes and freezes while capturing Pokémon have dropped significantly. Now it only happens a couple of times a day at the most. I’ve noticed that the servers go down usually during peak hours like after the end of the work day and even on weekends. The game isn’t usually out for long, but it always seems like the game goes out just to spite your plans of taking control of that gym across the street after you get out of work. It also fixed the 1HP gym glitch so that players could now experience gym battle as the poké-gods intended. Basically, all the upgrades were stability upgrades to make the game actually playable rather than just somewhat tolerable. Update one brought the game’s finished quality level up to what most people would consider as beta testing. What was released to the public should have never seen the light of day because it was not a finished product.
Update two was about as disappointing as hatching a 10km egg and it being a low level Magikarp. It didn’t add or take away from the build’s stability from Update one. Aside from some text changes, it actually saw the death of the game’s attempt at a tracking system. It is not loving referred to as the Three Step Glitch because since Niantic turned it off, every Pokémon now has the same three steps for their distance. Enter third-party Pokémon locator apps and sites.