I'm pretty sure this was my tablet and not the p4 or litchi. While flying today I kept getting a message saying could not charge due to battery temperature. The only option I had was to click ok to get the message to go away. I have a Samsung galaxy s2 tablet. Which is a pain to connect with when using litchi or dji go. I have to go into developer options and change usb connection from mtp to rndis and hope it changes. Sometimes it changes to charge and that is what happened. I thought it would be ok because it had connected and i would just click ok on the warning. WRONG, after clicking ok for about 4 times it shut litchi down and returned to the home screen. I couldn't get litchi or dji go to load up. I'm sure glad return to home worked! Just thought i would post my experience incase someone else is using a tab s2. Make sure usb connection is not set to charge!