ITB100HD-SP 15Mbps mod
I too got the hardware error after loading the firmware which I tried Twice, but both times I received the error. I was able to revert to the 12mbps firmware with no issues and the cam works normally.
I do hope you figure out a solution for the 15mbps, but if there's truly a hardware limitation with going that high can you try 14bps and/or 13mbps as well?