I am absolutely stealing the thunder from Dremu. Over on another board we were talking about a build he hasn't yet shared here, and quietly mentioned some really slick radio mods hes put together.
I'm sorry sir, this is way too cool not to share!
http://www.slosh.com/rc/flysky/compile/
1. Skip the startup "Switch Safe Check"
2. Change display of a Switch to Pot
3. Custom draw *.bmp pictures for models (only 2 per radio though)
This is computer programming, it could brick your radio if you aren't careful enough.
And how to input some more switches
http://www.slosh.com/rc/flysky/addl6switches/
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Wow, it's been a while since i went looking for mods. There are now people adding "Switch E" off a test point on the pcb, using the trainer port on back with an aurduino in a breakout box to add channels, transmit 14 channels...