This post goes over how to update IQ2s to 1.6 after updating main panel to 1.6.2. I am including the steps below including the patch tags:
- Update main panel to 1.6.2 using the patch tag “systest162”
- Do two master resets on IQ2(s) back-to-back
- Re-connect IQ2(s) to Wifi and STAY ON WIFI CONNECT SCREEN (black background)
- Grab IP address by clicking network name
- Add IQ2(s) to main panel by using IP address
- Navigate to patch tag option, enter “iq216” and select IQ2 Panel Upgrade Using Network
- Allow patch to download and press OK when done
- Keep an eye but DO NOT TOUCH IQ2 SCREEN for up to 10 MINUTES
Does this work for you and resolve the issue?