G4 stopped using 5g wifi, probably after 13B upgrade. WiFi Analyzer [on G4] shows 5g signal strong and available, but G4 remains on 2.4. Any ideas how to correct? G4 does not have a dual band selector option to pick 2.4 or 5g. I am using a Google onhub router that broadcasts 2.4 and 5g. The G4 recognizes both, but always selects the 2.4 even right next to the router.