I suggest if you don't already have a support case open with Parrot then you open one and email a link to this thread.
There is a legal case against Parrot which could be taken to the small claims court. It's similar to the class action that was just won against Apple who were found guilty of slowing down old iPhones. I have a support case open where they asked standard questions and I answered but did not receive a reply. So I have just followed up with an email saying:
"Please see this thread. Please advise urgently how I can return to stable firmware otherwise I will be looking into legal action against Parrot for damaging my drone.
Another Anafi Drops from the Sky"