From what I've seen, it is possible and some people have gotten it working (not myself). Here are some useful references:
It sounds like you already have a good head for what needs to be done to get it working
This should be possible with Bridge Control Panel. Could you please check RX8 example code in C:\Program Files (x86)\Cypress\Programmer\Bridge Control Panel\1.18.0\Examples. The help section in Bridge Control Panel regarding RX8 example will be also helpful.