After firmware update (T46G), No Service, can't login

[complex1]

OK, please try next (is slight more than only one mouse click):
1. make sure your phones don’t have an internet connection, but leave them connected to your LAN.
2. reset the phones by press the OK button for 10 sec, the phone goes to factory default and after booting up it can’t connect to the RPS server because there is not internet connection, so it can’t download the provisioning file and you can login with the default password.
3. upgrade the firmware
4. factory reset the phone again
5. restore the internet connection.
6. check if everything is OK now.

Good luck.

I’m not 100% for sure if it is possible to upgrade the x.x.193.x firmware to the x.x.0.x firmware.