Why am I seeing "This application does not support this device's CPU type"?

Question

When trying to build and install an application on an iPod running iOS 4.2.1, I'm seeing the error

This application does not support this device's CPU type

I'm trying to build the application using xcode 4.3, as well as xcode 4.4, and still seeing this. What can cause this and how can I fix it?

Answer 1

I have encountered such a problem today on iOS 11.2.1 with iPhone 7 devices.
The reason is that the previous project set up a 32-bit architecture that is no longer supported. And I solved the problem as follows：

Project -> Build Settings -> Architectures value should be set Standard architectures - $(ARCHS_STANDARD)

Answer 2

From the project build settings -> Architectures, make sure you have both armv6 and armv7 values.

Also, you can check your Info.plist file, under Required device capabilities. If there's armv7 there, remove it.

Answer 3

If you are getting this error building Unity 3D application, change scripting backend to IL2CPP, and select "Universal" architecture.