I followed all instructions for integrating the new firebase
release on ios
:
I downloaded the file GoogleService-Info.plist
I have same issue and found solution in here: iOS - Firebase error: Use of unresolved identifier FIRApp running supplied code
Doing the following steps on the terminal command line:
2nd and 3rd steps were the key I think, otherwise CocoaPods didn't try to update it. As I said maybe this could've been solved by doing pod update but now I can't go back and try again.