Well, this sort of thing has been done in the past successfully with other products. Take DD-WRT, for example. Collaboration produced powerful open source firmware that extended the usable life of what was believed to be outdated hardware. I know the x36 line is very capable hardware and not utilized anywhere near its full potential. As long as you aren't stepping on anyone's toes by copying proprietary code or utilizing unlicensed software, etc., I don't think Uniden can stop you. But you would have to separate yourself entirely from Uniden and make it very clear that your firmware is not official or endorsed, etc. I think trying to work with Uniden to update their firmware is a pipe dream for many reasons, unfortunately.