>> The guys over at consoleopen.com released a modified Build.py to make the RGH work on Slim (trinity) consoles with the new 14719 dash:
Build.py for 14719 slim (trinity board) is out in the wild thanks to marchisio and vola, old glitchip and old timings are still working!

Code:
http://www.consoleopen.com/forum/news-xbox-360-e-xbox-360-slim/4003-build-py-per-slim-14719-completato-consoleopen-rilascia.html