I have a first generation iPad with OS 5 on it. It works great and I would like to use it as a second monitor with my MacBook Pro. My problem is that it wouldn't download Air Display because the App requires OS 6 and above. The iPad wouldn't update to OS 6 because it's a dinosaur. Any ideas for a solution? Any other workable apps out there?
iMac (Retina 5K, 27-inch, Late 2014), OS X El Capitan (10.11), MacPro Dual-Core, 2.66 GHz