Sangoma S500 Stuck in initialising mode

Hi I have plugged in a Sangoma S500 and it is stuck on initialising mode, no matter how many times I connect and disconnect it just wont boot, is there a way to do a hard reset?

Thanks

I had a similar issue in the past. Something to do with the firmware version it shipped with.

If you have a dhcp option 66 (boot server, forgot the number), remove it temporarily.

The other thing I did to get around it was to boot the phone without the network plugged in. (You will need an ac adapter). The manually updated the firmware. After that it worked fine.

Only had the issue when I was testing, and fresh systems. Once I got running and EPM all setup everything was fine. Including additional fresh phones.