I would google XDA Developers. They have a solid list of all things you need to know about Odin and what is available for downloading.
Samsung customer service has confirmed to me that my note 8 is a US Sprint model. I'm outside the US. Is this why I'm not getting any updates?
Can anyone link any safe Oreo firmware to install for SM-N950UZKASPR?
I would keep in contact with Samsung. We wouldn't be able to help since it is not through our service.
Hi Malaotou! For the phone to receive software updates from Sprint, it would need to have a Sprint SIM card inserted and either be in an area we provide coverage or connected to WiFi. Since you're in China, you'd of course need to be connected to WiFi. I can't guarantee this will work, as I'm not sure what restrictions the Chinese government has on foreign wireless providers sending updates.