I've only experienced the webpage disconnecting while transmitting and reconnecting after I've unkeyed, but as indicated above, others have reported to me that their OS4s have locked up totally while they are transmitting after about a minute or 2, where the blue and orange light flashes indicating that it cannot connect to the server. Additionally, the OS4 does not respond button presses or radio keying. The only thing it will respond to is a hard press and hold down of the power button putting it in AP mode and then reconfiguring the OS4. Those I've spoken to have gone through this a few times and have given up and went back to V61.
I personally have not had any issues with this issue - just the web browser dropping out - but obviously there is an issue. Additionally, this was experienced not only on REF035C but on several other DStar reflectors.
No logs could be obtained since the device had to be reset. As for pictures or videos, the description of what happens can be found in the User Manual under "The openSPOT4 can't connect to the selected server."
Thank you.
Perry