@YouTube @TeamYouTube What's going on? 
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Hi, I tried but I still can't get the update and even use the YouTube app on my phone. What should I do?
Appreciate your efforts. Make sure the device firmware is updated to the latest version. If it doesn't help, please send a feedback report: https://yt.be/help/ghA5 . While every individual report may not get a direct response, we do review everything to investigate and fix issues.
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