Here are the steps below. Please use those steps and let me know if it fails, where does the failure occur and is there any error message:
1- Swipe down from the top of the screen and touch “Settings"
2- Touch “Advanced Settings”
3- Enter a valid installer code (default is 1111)
4- Touch “Upgrade Software”
5 -Touch “Patch Tag” and enter the patch iqpanel4.6.2 then touch OK
6- Touch “Upgrade Using Network” (Panel must be connected to Wi-Fi). Update will download and install
7- Once complete touch “OK” to reboot the Panel. Do not touch the screen after. The update process will take approximately 5 minutes. After the Panel reboots the home screen will appear and the LED will turn green.