I've finished! It works!
I'll post up a video soon, but it's working f*****g beautifully.
In all, I've rooted the head unit and installed a different firmware to allow me much more access into the device to change things you can't normally change, including the boot animation (rather than a static logo, which took A LOT of effort), ringtone, icons, screen saver for idle, and so on.
Before:
After (keeping up with the theme of Porsche's orange and silver PCM interfaces):
And some screenshots:
Here's the startup animation:
Main screen:
Pressing the 'Porsche' icon will launch Torque with a custom theme (still working on it).
Torque 01:
Torque 02:
Torque 03:
When the screen is idle after 5 minutes of no use, the following screen appears. Touching it shows the interface again (great for night driving):
Pressing 'Navigate' launches the amazing 'Offline Maps & Navigation' app, with the UK pre-downloaded, so no internet is ever needed for sat nav guidance:
That's about it! All in all, it's totally transformed the radio. Much more flexible, much more Porsche-like, and all previous bugs have been removed with the new firmware.
This is all while it's been snowing, as I still can't fix my AOS!