ci lavorerò un po anche se non capisco come mai improvvisamente non riesco piu a telefonarecon quello che andava, non ho cambiato nessuna impostazioni

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If user upgrades the phone with a firmware that doesn’t match the hardware, the phone will crash and won’t reboot. There are a lot of different reference designs based on PA1688, so one must make clear what the hardware type is and find the corresponding firmware before doing upgrade. Never set "debug"to "no check", because this way program won’t check if the firmware matches the hardware or not, which is very dangerous. If user really doesn’t know the hardware type, please send email to support@aredfox.com to get help. Once upgrade failed, follow the below steps to do safe-recovery:
1.Press and hold * while power up, until you see * begin to display on your LCD.
2.Power off and do 1 again, after the second time power up, our standard design IP phone's default IP address is 192.168.1.100. There are exceptions, like with Unisen ip8008, the default is 192.168.0.100, and with Vida iPH-E00 serial phones has default IP address of 192.168.1.10.
3.Put the ip phone and a Windows PC on the same LAN.
4.Run palmtool.exe on PC. You can try palmtool "Start Debug" button, a debug window will pop us, and if you press key on the IP phone, the key and the IP phone's IP address will be displayed on the debug window
5.If you PC's address is not 192.168.1.xxx (not on the same LAN of the IP phone), change its TCPIP settings to the same LAN.
6.Put 192.168.1.100 (or other default IP) in the palmtool "IP Address on Chip" field.
7.Find the correct upgrade file, and use palmtool "Update Program" button to update your IP phone.

　Grazie