After successfully update firmware to 18.104.22.168,i test my P3 & ALL working fine as usual. Leave a bin file in sdcard. Put it back to a bag. After 3 days,try to use my drone...suddenly P3 giving screech sound after sounds like data reading. Switch it off & try again...still the same result. Format the sdcard,put it back & turn on my drone(already..RC switch on)...no more sound,RC & telemetry data working just fine as usual BUT NO LIVE FEED VIDEO!! Try with different fon,cable & sdcard...still the same problem. Tried reinstall the 1.5.03 firmware but failed. Tried to downgrade...still failed. Try other sdcard with fresh download firmware 1.5.03 file....still failed to finish the upgrade. Dont know what to do now. Anyone have experience with this problem?? Any solution?? Yes...i've contact online DJI support. They ask me to send it back to them....all cost on me. That's why i try to get help in this forum...maybe someone have idea to solve my problem....hopefully.