hi , I'm new to here. I just want to share my experience I had yesterday. Yesterday at 6PM, I had my inspire1 flight over small river about 6 foot from surface of water , then my i1's props hit the branch of tree, and crashed into water. all signals and camera vision was gone. (there is no vision in water)I searched my i1 around river , but it was too dark and I gave up to find. I went back home with broken heart... Nextday at 6AM , I went to river again and found it ! but it was completely submerged into water ( 5foot deep ), so I went back home and made a hook , then captured it ! battery was gone , ofcourse , but after an hour, suddenly tale light flashes red color, and give a strange alert sound (beeeeeep....), so I pull out battery. what i had done after the incident. 1. use air compressor (just like using in bicycle shop) to push out water , especially around main board and motor and camera. camera was heavyly fogged so I use air compressor to push out water again and again, then put it in outside with lens towards to sun (to remove fog completely). 2. then use a hair dryer to evaporates small drop of water from body. 3. at this point I put another battery and try to revive my i1, but it beeped loud alert again,status LED was red (continuously) and was still in flight position (as same as when it was crashed), I try to made it transfer mode from my iPad and remote control , but i1 ignored any command. camera was still black out and moving weird. in my iPad there was sign of "System error". front and rear LED showed Yellow light which I never saw in my i1 in normal use. 4. but at this point DJI Pilot notice me of there is new firmware, so I ignored all the bad condition and put micro-SD card with new firmware and upgrade it. it was succeed, and end of upgrade, i1 moving to landing position. but in my iPad still there is sign of "ESC error" 5. I take out ESC and motor and remove water again by using air compressor . 6. then put my i1 in front of air conditioner about 6 hours. 7. after of all , my i1 flight again! there is no sign of error or anormal moving. I don't know I'm just lucky or it's normal, but my i1 submerged completely into water for12hours...! I suspect if it was ocean, it's difficult to survive, but if ur drone crashed into river or lake, there must be chance to revive just like I experienced. thanx to read and sorry for my broken english.