Fanvil X4 Model Provisioning

The older phone models (for e.g X4 etc.) need the "Configuration File Name " as "prov/fanvil.xml " (will be found inside RPS --> Group --> Edit button --> Phone Flash section). The old models also may need multiple factory resets at each periodic interval during provisioning (Heads-up if you don't see the phone doing anything).

Fanvil X4U Model 

The newer phone models (e.g. X4U etc.) need the "Configuration File Name " as "prov/fanvil-sysconf.xml" (will be found inside RPS --> Group --> Edit button --> Phone Flash section)