(use winagent tftp server and mikrotik(or any router capable of defining dhcp option) )ġ143565489-a3cbf294-7526-4c29-8791-c4fce4ce4c37 Setup dhcp server with option 150 tp tftp server address Immediately hole # bottom till like blinking orange The settings are stored in volatile RAM, so it is important to not remove power to the phone during this process. The code for the network preservation hard reset is: *7412369#085Īnd it also does a complete format of /flash0 - yet it preserves the network settings so that after the format, any static IP and other network settings are preserved. #Hard Reset with Network Setting Preservation All settings and personalization of the phone is removed. The code for the total hard reset is: 3491672850*#Ī total hard reset formats /flash0 blowing away everything except CNU. phone recovers default loads file from TFTP server deletes key files on the phone including /etc/init.tabħ. If you use another DHCP server you can set the option 150, or option 66 on the DHCP scope to point to your computer for TFTP. The code for the soft factory reset is: 123456789*0#ĥ. *firmware above 9.x only work with sip tcp protocol and need this config on both asterisk and phone: *my phones come with sccp 9.3.1r1 firmware so the 8.5.4 firmware doesnt work on it *for configuring (such as name user pass etc) should create a SEP************.cnf.xml which should replaced with mac address of phone i give an example in below.Now phone rebooted and search for dhcp and tftp server and began of upgrading Reset factory phone by holding # while powering on ,then after 5 second enter (123456789*0#)

Setup dhcp server with option value 66 for tftp address (if uses 150 ,it cause external tftp server address) lastest sip firmware for phones from ciscoĬonnect phone and pc to network without another dhcp server

Tftpd32 dhcp option 150 configuration