There are some things you might consider:
1.) The SD Card. Make sure it is formatted to FAT32 on a Windows PC. Some other formats can cause problems. Some problems have been reported using FAT32 formatted on a MAC.
2.) The firmware. The videos generally mention download from Yuneec, and that's OK, but appears to have created some confusion. But please be aware there are two files that go on the SD card ("TyphoonH_Ver3.04_A.bin" and " ST16_V3.1.30.yuneec". The files can be downloaded from
US Firmware. Select both boxes that appear to the left of the file titles when you hover over them, and then the download option above. This will download both files as a single zip. The single zip will extract to the
two files that go on the card.
3.) Instructions. I would recommend trying this video by Jeff Sibelius. This video is more aimed at an SD card version of the update.
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4.) If you still can't bind after following this video, we need to talk about exactly where in the process the binding is failing.