Ok so I decided to update to the latest and greatest firmware. Have not had any issues with any of the others I have do so far. So I did everything I was suppose to and all seemed well. The aircraft did its beeping for about ten minutes and signaled it was done. Put the next battery in and same thing. Beeped for about ten minutes then signaled it was done. Shut the aircraft down. Checked the SIM card and is shows success. Erased everything as I normally do since I only have the two batteries and don't need the bin file again. Turned on the remote and iPad then aircraft. All seems well. Went into the screen that says about. Remote shows its latest firmware. Aircraft and battery show unknown firmware. Tried to reinstall and nothing happens. Still shows unknown. I have not flow the aircraft but everything seems normal. So has anybody else run into this? Is there solution?