Hoping to get a clear answer on this – as reading forums and blogs are still confusing. Is there a downside to using the Windows Insider program to upgrade a L640 to Windows 10 Mobile on the production ring? Will I miss out on future firmware upgrades from the carrier (GoPhone/AT&T) if it every decides to issue the OTA update. The Microsoft blog indicates the Insider program delivers the same bits (10.0.10586.164) as you\’d get if you wait for OTA. But is there a downside users should be aware of ahead of time?