the unit had also previously failed a 2780 update which josi helped recover, his advice was to avoid the revision A units if possible...
mr_nitroz@centrum.cz
thats the email of Simon Nytra, the chap who repaired my RNS for me with brand new front panel, radio board, mainboard etc, updated to latest firmware and maps and shipped it back to me within 5 days... if you tell him 'Ali' referred you he'll give you a decent price, he also sells the Revision F/H units at around about 650-700Euro's which i believe also includes delivery