hey, not to argue - but i have made progress... til yesterday i was about to spend $70CAD, 100EUD to get this checked overseas - I am thinking they would use same tools and advice and you have give me... End of day - i got to tinker and not spending $$$$ for a unit i have since replaced... top marks for you, A++++ - and have been to Australia, beautiful country, i love the rough country to live and play in...

Anyway - upto my last attempts recently the unit did act differently with and without SD card installed - that was last year and i dont remember all the details...

when you mention 'erasing' - i also found another 'rng' file online from Indonesia and tried that - using that rgn, i do get 'erasing' message but not with your rgn file....

many appreciations for the help - hey, i a civil guy, all i do in my normal day is set charges for mining...

is there any chance there is a physical issues - i could easily do a cap/resistor replacement but diagnosing a chi fail is beyond my electronical capabilities...