If it was working when you got it, and applying settings in the mSetup is the only thing that made it stop working, then i doubt it doesnt work.
Maybe there's a combination of keys for a factory reset.
I don't know where you bought it from, but if its from ebay eletoponline365 store, then he maybe slow to respond (a few days sometimes), but he always responded to me, and i've sent him Mobius 2 and got it back from him.
Cheers, according to the manual the reset button should take care of any firmware lockups. The camera worked after using mSetup, it was about 10 minutes later I started charging it and then a little later I went to turn it on to check something and nothing happened. I suspect the battery, but then the green charge light seems to be working correctly.
Here's what it says for no power up. I've charged the battery right up and still no luck. I'm guessing the last point involved opening it up to check the ribbon connector?
Q. When I press the Power button, nothing happens.
A. An apparent 'dead' camera can be caused by the following:
• The battery is flat or defective. Replace or charge the battery.
• The Firmware may have locked up. Use a paper clip or similar object to press the Reset button.
• The lens module cable is not properly inserted or defective. Ensure the lens cable is firmly and squarely seated at both ends. Take note that the connectors have an opening mechanism. Never use force to insert/remove the cable.
I didn't buy from eBay, it was a store which is apparently a Authorised UK Reseller of Mobius cams. He was fairly quick to respond earlier in the day when we were discussing the delivery, maybe he's been called away so I'm happy enough to wait until the end of tomorrow for a response, it's not exactly a life or death situation lol