Xcode 7.2.1 Swift 2 - Updating to Xcode 7.3

Question

As I'm getting this "Could not find Developer Disk Image" error when trying to run my app on my iPhone 6s, I notice that most people are suggesting to upgrade to Xcode 7.3.

My iPhone 6s is running iOS 9.2. I have Xcode 7.2.1 and my Mac version is El Capitan 10.11.

I want to download Xcode 7.3 from here https://developer.apple.com/downloads/

My question is, do I have to uninstall Xcode 7.2.1 first or can I just run the new Xcode 7.3 file and would it take care of upgrading the current Xcode version to new? Do I have to take a backup of my app projects before doing anything? Right now my projects are in Desktop.

Thank you in advance.

Answer 1

I did it last month, I uninstalled XCode 7.2 first. Then I launched the 7.3 file and XCode works. I don't think that the XCode 7.3 .dmg will upgrade your current XCode, because it's the entire software. Not an update.

You don't have to do a back up of your projects. only XCode will be uninstalled. Your projects are where you have saved them.