Have you subscribed to Windows Insider Program but you are stuck on specific channel because your device is not supported? now this is no longer a thing.
Nothing, Just download any ready made of register files which are it's links are given below.
Canary: https://www.elevenforum.com/attachments/switch_to_canary_channel-reg.54443/?hash=f308257419001e92c7b65236a545d449 Dev: https://www.elevenforum.com/attachments/switch_to_dev_channel-reg.4480/?hash=6ee440b5958f87df57d57d02c0b04c8b Beta: https://www.elevenforum.com/attachments/switch_to_beta_channel-reg.4479/?hash=6ee440b5958f87df57d57d02c0b04c8b Release Preview: https://www.elevenforum.com/attachments/switch_to_release_preview_channel-reg.10048/?hash=7bf48bb6e069b19392c1c36236996725