Error : maximum number of update rollouts reached
You may get error "maximum number of update rollouts reached" while updating your Galaxy S4 over the phone.
If this error appears frequently then install Samsung Kies on you computer/laptop and then try to update the device software.
Once you install the Kies on your PC, connect the mobile to PC. If Kies successfully connects to your device then it will automatically detect the software version on the device and if update is required it will prompt your for the device software update.