From the 24th May 2016, SKY TV has moved some satellite services to another frequency these are BRAVO plus 1, Prime and The Edge TV. These satellite services will need to be manually added to your Zinwell ZMX-7500 or DSE7500 Freeview Satellite Receiver as the firmware for those devices was designed to only add services from Freeview transponders. The transponder that these channels are being moved to is a SKY transponder.
The Manufacturer has provided easy instructions (and Joshua has added some photos) to help you complete this process, click "Get Started" to begin.
If you are experienced with the unit, abbreviated instructions for those familiar with editing the system settings can be accessed by clicking INTERMEDIATE USERS. Otherwise clicking Getting Started will help you get the channels back