Updating the firmware, recovery via Network is intended for the initial setup of the phone or for situations when there is no other way to get the phone working again.
This procedure is necessary if you want to be 100% sure that your phone is completely reset to factory defaults.
This procedure will erase all the phone memory, so all your phone settings will be lost.
In this howto we detail a step-by-step procedure using a small TFTP/HTTP/SIP/DHCP Server: SPLiT is available here.
In order to do the factory reset via Network recovery you need to download the SPLiT application and the proper firmware binary you want to install.
When the firmware file is downloaded you need to rename it according to the following table:
|Phone model||File name|
Alternatively to the SPLiT solution presented here, you can of course set up your own HTTP, FTP or TFTP server.
Please keep in mind that if the firmware file is bigger than 32MB like some of the latest ones, the TFTP/FTP server will not work and the phone will need an older firmware with a smaller file or you would need to use the HTTP server)
Detailed instructions on how to install and set up SPLiT can be found in the following article: How to setup SPLiT - VoIP Test Environment
Next step is to start the phone in what is called Rescue Mode:
Or press **## and Keep the (hash) # Key pressed until the " Rescue Mode " screen appears.
You can choose there between:
Please choose now 2."Recovery via network"
At this point your need to type:
The Server, IP address of your PC running the HTTP, FTP or TFTP server
Finally, select the protocol (HTTP,FTP or TFTP) in this example TFTP.
If you don´t want to use "Split" you can Save the Firmware File also in a local Webserver. In this case enter the Server IP Address, where you want to download the Firmware from.
Plug the phone
Keep the softkey pressed until the Rescue Mode screen appears