I've taken note of the key phrase 'P250 Exchanger cs go skin instal the new version for iphone' and extracted relevant information from the provided text.

The P250 Exchanger is a standout CS:GO skin with a futuristic, metallic design originating from the Spectrum 2 Collection. It has seen notable usage in key matches and has shown considerable market growth among traders.

If you're looking to install an app for trading or viewing CS:GO skins on your iPhone, I recommend checking out the Skin Ape CSGO app, which allows you to buy, sell, and exchange skins with a user-friendly interface. You can also download CS:GO for free with all skins from various sources.

As for installing the new version of the P250 Exchanger skin installer specifically for your iPhone, I couldn't find any direct information on this topic. However, I can suggest a few possible approaches:

1. Search for 'P250 Exchanger' in the App Store or Google Play to see if there's an official app available.

2. Check online marketplaces like DMarket Universe or Skin Ape CSGO to see if they offer a mobile client for installing skins on your iPhone.

3. Look for alternative skin installers that support CS:GO skins and have iOS-compatible versions.

If you need further assistance or have any specific questions about trading, installing skins, or using the Skin Ape app, feel free to ask!