H501S Firmware Upgrade Protocol

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. -~-~~-~~~-