MT8783 S1 Product Support Information discontinued Series 1(S1) MT8783 Device in December 2019. Realsun Communication Technology, which produced the device, is now closed permanently and therefore no service (warranty, repair, replacement, and software update) is possible for S1 units anymore began warning its clients about a possible service disruption in October 2019 and advised existing clients to quickly obtain any service required before February 15, 2020. 

As a vendor, tried very hard and to the best of it's ability to remedy the situation and protect its clients, but it unfortunately reached the very difficult decision that it must declare the default of any warranty service for S1 products and Realsun Communication Technology device or supplied accessories due to hardship. Thus, all warranty for S1 device and its accessories is now null and void effective February 15, 2020.