Zidoo has released differential packages via OTA for their model Z9X 8K.
Zidoo Z9X 8K Firmware Download – Z9X-8K v1.1.36(_G) to v1.1.38(_G)
Zidoo Z9X 8K Firmware Download – Z9X-8K v1.1.35(_G) to v1.1.38(_G)
Zidoo Z9X 8K Firmware Download – Z9X-8K v1.1.27 to v1.1.38