I found a download for the latest version of the GO annotation flat file here:
But I'm also trying to locate a version that goes with the GRCh37 build, and I cannot figure out how to tell which archived GO database to use. I have not heard back from their support.
Is it safe to assume that a GO database release in February 2014 corresponds to Ensembl 75/GRCh37 since they are both released on the same date?
I would really appreciate it if anyone can point me in the right direction. Thanks!