Exchange ActiveSync worked fine before and leading up to the update. 

Exchange ActiveSync not working since last system update, software update to G900VVRU2BOE1 ON Jul 7, 2015

I have installed the Software Update/Repair Assistant and I ran the upgrade assistant

I received a message saying - your device's current firmware version is not supported to update firmware

Next, I tried to run the repair assistant but could not, likely because of the firmware problem

The only previous update to my phone was to G900VVRU1BOC4 on Apr 3, 2015

The last factory data reset was 12/13/14

Any ideas?