I offered to continue supporting owners of Zinwell products for as long as possible after the demise of the NZ distributor. The ZMX7500 was designed in 2006 and was extensively used here in the trials prior to the launch of Freeview in 2007. Manufacture of this model ceased at the end of 2009. Although I still have contact with the manufacturer in Taiwan, the original software design team was an external contractor who didn't release the kernal source code to Zinwell. As that company was disbanded there is no possibility of any further software updates. This model has been a solid and reliable work horse now for over 6 years. How many people have kept and continued to use the same computer or cellphone for that length of time? The original design concept was to have a simple to install receiver that was locked to the 2 Freeview transponders and at that time it was not envisaged that the receiver would ever need to tune to transponders other than 12483 & 12456. I hope I have been able to provide the means for owners of this product to extend its useful life further. Someone cleverer than me came up with the method for adding additional transponders and channels, despite the locked down software and I have tried to make the procedure as easy as I can to understand for the non-technical. I have refined the instructions several times from the feedback I have had from continuous emails and phone calls I have received since the 8th of October. I have been able to talk all callers through the parts where they have had difficulty and to date there has been only one person I couldn't help because of a suspected faulty LNB. Today I even talked an elderly gentleman thru changing the LNB frequency to compensate for an aging LNB which had caused the loss of all channels, of cause advising him that he would probably need to have it replaced in the near future.
Your negative comments (on this and other forums) are not really helping owners of the ZMX-7500 and the G7500. Try some positive support to help people instead of just knocking these models. I have spent numerous hours over the past week answering emails and phone calls, pretty much all day and evenings, assisting owners restore Prime, with very few failures. In every case of reported difficulty, I have tried to identify the cause and refine the procedure.
I am retired with no re-recompense for any support I provide, but as a former employee of Next Electronics (now liquidated), I offered to provide continued support for the Zinwell models, as much as I can within my limited means and facilities.
Please be more considerate and helpful to those owners of these products who are just as frustrated as everyone else with the loss of Prime from the Freeview transponder.