iTunes & OS Yosemite
I've updated to iTunes 12.8.1.3 recently and now when i connect my iPhone, I'm getting the "To use your iPhone with iTunes, you need to install OS X 10.11.4 (or later)." message. I'm running OS X Yosemite 10.10.5 on my iMac. I can't however seem to upgrade my OS system any further, I think due to the age of my iMac (late 2009). When I look for system updates, there are none available.
Does anyone know how I can revert my iTunes back, so it is compatible with my iPhone again? Or help me upgrade my OS to it all works together again?
Thanks!
iMac, OS X 10.10