The ST16 file updated with no problem but the h had to update from the wifiYuneec USA's download area does not use zip files. Use the file(s) as it (they) are, do not "unzip".
The drone file will always have a ".bin" suffix and the ST16 a ".yuneec" suffix.
Good luck.I recommend the latest .bin update. Makes landing so easy I did it blindfolded
. Well, I thought about doing it.
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