Today I was prompted to upgrade the firmware on my P4. After the upgrade the controller light, far left, was flashing red and green, there was no photo image on my device (iPad) and the controller was not talking to the P4. The status messages (top left on the screen) were changing from one warning to another. I then used the computer OSX with Assistant 2. Still no joy. I contacted your help line (who answered straight away 
four times during the day. I also tried to upgrade using the DJI Go 4 app. Pressing the link light on the P4 did no good. I found it difficult at times to understand what the help line people were saying. They firmly advised me to look at the videos available online which I have done- many times. The problem remains and I an now unable to take the drone with me on a special trip tomorrow.
What is going on?
Purchased new two years ago on-line .
four times during the day. I also tried to upgrade using the DJI Go 4 app. Pressing the link light on the P4 did no good. I found it difficult at times to understand what the help line people were saying. They firmly advised me to look at the videos available online which I have done- many times. The problem remains and I an now unable to take the drone with me on a special trip tomorrow.What is going on?
Purchased new two years ago on-line .
