Thanks for the replies. Unfortunately, my Gaia is one of the first units. I preordered it when it was first announced. It does not have programmable i2s outputs.
i didn’t have any problems with the Terminator FPGA update and I liked the changes in sound quality. But it also changed the way i2s works and my Gaia is no longer compatible. Vinshine was not helpful at the time (other than to tell me that my early Gaia does not have the ability to change the i2s pinout).
I am hoping that there is someone on the forum that updated their original Terminator Plus firmware and has had success using it with a Gaia, and if so, which version of the Gaia

