can anyone please tell me what is the most recent firmware version for the M7 Pro? I have firmware v. 0.7.1 with latest app v1.5.0 and I'm getting "Please clean the cliff sensors" error, anytime I start to clean.  Robot does not start, no matter connected or not connected to the Wi-Fi. 

I have cleaned every sensor as far as I could. And a ton of times the 4 cliff sensors. They are immaculate. 

When I check for further firmware updates, none is available. I Guess I'm at the latest one and probably that has messed up my unit. 

Can anyone tell me how can I downgrade firmware? any method to really reset the robot to the first original firmware?