March 7 2019. The option to update the firmware no longer appears in the IOS app 2.0 for iManifold. The info currently posted at their website about doing the firmware update is out of date.
I called technical support and they said to download the alternate app called iManifoldCR. Apparently this is a custom version for Clearesult tuneup programs. It looks like the old version of the software which is useful if you don’t like the current 2.0 software.
https://www.clearesult.com/utility-solutions/residential-hvac/
The update firmware option is still there in the iManifoldCR app. They said the function will be returned to the regular app in the future.
Try to do the firmware upgrade when you don’t need the phone or tablet. It can take a long time. I suggest disabling the lock screen so the device doesn’t go to sleep. It seems to speed up the process.
Hope this helps someone. I lost about 90 minutes trying to resolve the missing firmware update button