All models introduced in 2014 or earlier (and a few later ones as well) are now considered obsolete (i.e. "legacy") and no longer receiving updates from Roku. They will continue to function but the number of channels that will run on them will continue to dwindle, as many channels rely on features and capabilities added in later models.
This page will tell you the status of individual Roku models: https://developer.roku.com/docs/specs/hardware.md
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
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Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X
