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Attention! We now have the H501S and H501SS. The firmware and upgrade process are different for both, so please first watch this video to see which one you have: If you have an H501SS, use this upgrade process video: Use this video only if you have an H501S. Applicable for H109S users- just follow the tips for the H501S Advanced transmitter and receiver upgrade tips inside the video. H502E and S owners may use the flight control/FC protocol for upgrading their drones. We noticed the mistakes on the phone number and the names of USB cable. The phone number is (909) 444 - 0555. The drone uses a micro USB cable, and the transmitter uses a mini USB cable. We are also working on uploading the upgrade files to our website, , we will have the files on our website soon. Firmware files are available on there is no need to upgrade your transmitter/controller. -~-~~-~~~-
