I finally updated and tested my P4P yesterday i didn't have issues except a small before take off vibration that i never see before...When i start the motors and then after 3-4 seconds, when i throttle up for take off i discover a 1-2 seconds vibration on the aircraft but when it is taking off this stops...I hope that wont cause any stress cracks in the aircrafts body...I tried 4 batteries flight ,tested all intelligent flight modes also S and A mode with no issues...So everything ok except that small vibration issue before taking off...Before the 0600 firmware i used the 0602 version with very rock solid flights and neither one issue...I have downgrade from 0500 because it was really bad firmware with reversed video problems wich i think is very dangerous during flight...So now i m not sure if i will keep that firmware or downgrade again at 0602 which was really great and stable for P4P but without been able to use pano modes in photo mode.I will do some more test and then i will deside.