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I agree that it is slow for everyday browsing but when I want to watch IPTV live TV on it when parked and not go from web page to web page it works great.
I just tried it in my '21 SR+ US version and it worked. As far as I could tell though it doesn't allow input of an address after the first prompt. The other thing I tried is music from my streaming app Qobuz on the web and it does NOT play when put in drive, just like the built in browser.