How do I downgrade Apple TV 4K 2nd gen from tvOS 26 to 18.5?

Is it possible at all to downgrade my Apple TV 4K (2nd gen) from tvOS 26 release update back to tvOS 18.5 without an existing USB-port? My previously perfectly functioning Apple TV is now full of bugs and lags since that tvOS 26 release update, just like my iPhone was. Luckily, I was able to salvage my iPhone without any data loss, but my Apple TV still has the tvOS 26 on it. I don't care about any data loss risks, I just want to downgrade it.

[Re-Titled by Moderator]

Original Title: Downgrade from tvOS 26 to 18.5