I've came across strange issue on the SPA502G IP phones.
The phones were tested by one of our partners, after the tests both phones hang during bootup process, after connecting power to phone it starts.. Cisco logo appears, then message Initializing Network appears and phone stays in this state(I've checked for more than 20 minutes, the phone doesn't go to the next stage) until we disconnect power. After powering it up again we get the same behavior Initializing Network message on the display.
We can't get to the phone menu when we press the menu button on the phone, nothing happens.
I've checked the DHCP server, the phone gets IP address, we can get to the web UI, but phone doesn;t accept any changes, after pressing the Submit Changes Button, there is message that phone may reboot, but again nothing happens, we have only the Initializing network message on the display.
I've tried to upload new firmware but application stops at the stage when phone should be idle in order to download the file.
Does anyone has solution to this problem?