You sir are a genius - I'd assumed it couldnt be rolled back (Pioneer website says you cannot) - downloaded the 1.14 from the link on this forum, fired it up on the headunit - got a warning it was older than current did I wish to continue, then simply said yes and installed 1.14 over the top! Had to do the bluetooth rollback too, but now working fine - testmode works perfectly, and I've patched out the annoying nav warning 'OK' screen