Hi
i got it fixed. I downloaded the firmware from the x5 page instead of the inspire pro page. According to version numbering they are the same, but maybe one got corrupted during download.
I tried above things too, but nothing helped. Sometimes it started firmware upgarde (red and green flashing) but the AC just turned itself off and i thought wow done, started it up again and horrible beeping again. Had this numerous times happening and one time all of a sudden the status indicator started flashing again and the aircraft "turned" on but was still upgrading... I let it do that and just waited and waited and voila it worked. I really thought i shot my AC now and cant use it anymore. Did a short testflight and it really flies
wow what an horrible situation. I went to a store for the other update issues i had and they pretty much just kept playing with it too until it finally solved my previous issues. They guy even shot one of their store inspires and his own phantom it only had a solid red light....
DJI has to work on that update procedures and to safely update it. The store guy told me he did dozens of updates and always the same time and sometimes this cr*** happens out of the blue. Thats pretty bad, especially if you are overseas and no one there for help, except sending it back to the US or China and you wont see it anymore for the next 3 month probably