Well I've swapped the radios, and the satnav unit fits just right in it's place. Switched it on and yes - no code required or anything! Was pleasantly surprised!
But few issues as stated in other topics - steering wheel controls went dead, antena cable doesn't fit (needs adaptor), the USB stick that was plugged in got fried (small power surge, i think). And the main issue is that the climate control unit now doesn't fit
Any suggestions if the front fascia of the climate control unit can be changed to suit satnav unit? Or the unit itself needs changing?
Getting really frustrated now, cause it's the 2nd satnav already that causes issues - I've already sent back the Android octacore blah-blah-blah Chinese unit, as it was leaving an ugly gap at the top with the dash.
The bloody car is starting to feel unlucky....