Description of issue: UCB fails when trying to link my app. I suspect it is because I am using 3rd party SDKs that contain bitcode created in a more recent xcode (8.3) and UCB only has xcode 8.0 available for me to select. XCode version: 8.0 UCB Local build platform: El Capitan. I can only run xcode 8.0 locally, because el capitan can't use xcode 8.3 So, I also get the same invalid bitcode error when archiving locally. I can build & deploy to my device from my local machine, but can not use the Archive function of Xcode. Because of this issue, I decided to try to use UCB instead of my El Capitan to delay/avoid upgrading my mac..but it looks like UCB is using the same outdated version of Xcode as I am. Build target: iOS Relevant plugins being used: Fyber with 6 mediated ad network SDKs. Flurry. Build log (relevant chunk): 14162: [xcode] error: Invalid bitcode version (Producer: '802.0.38.0_0' Reader: '800.0.38_0') 14163: [xcode] clang: error: linker command failed with exit code 1 (use -v to see invocation) 14164: [xcode] ** ARCHIVE FAILED ** 800.0.38_0 means xcode 8.0 802.0.38.0_0 means xcode 8.3 Is the UCB mac enviroment capable of using xcode 8.3 (requires Sierra) yet? Can you please make xcode 8.3 available on UCB?