This root addon works on any MyGica device not only for the 1900Pro or 495Pro . I tried it on the ATV195X. It should work for any device. I extracted the image file. The only thing that is inside is a SU file which will install on /system/xbin. Nothing proprietary. It's like Super SU or Magisk.
This root package works on all MyGica devices not only the 495 PRO/1900 PRO boxes. Tested on ATV195X and it works. The only downside is that it will not ask for your permission for root access and there is no dashboard or settings pannel. Other than that it's fine