After 17.4 update HDMI CEC issue on Apple TV

That could be an issue only with first gen 4K??

I can confirm that my LG remote is once again controlling my Apple TV. There seems to be no rhyme or reason for when it works and when it doesn’t. I would guess 17.4 hasn’t completely broken CEC but instead does something to affect the communication protocol.

My solution to this issue was to unplug the power cord to the Apple TV while it was onscreen, wait for the signal to the tv to drop, then plug it back in. I did this about 10 times until a pop up appeared asking if I wanted to recover the TVos. Selecting that option eventually brought up a code on my iPhone to enter to begin the recovery process. Took about 25 minutes to reload the TVos, then restart the Apple TV. My Samsung remote then worked fine again. No apps or settings lost. Login remained unchanged.

The bug is what is called a "race condition". It will appear to be random, sometimes it will work and sometimes it won't. If you reboot your Apple TV it might start working but it also might not. I've reported the bug to Apple and they're aware of the issue, so we'll all just have to wait for them to release a fix.

Massive headache. I have 20+ reports from our clients that their Crestron does not control the Apple TVs and no video. Apple does not care, they will just tell everyone to buy ATV's for every display and disregard integration and one location for all AV sources. Thanks for making us money and clients hating your product, we'll be pushing them to Roku if this continues.

It's about television remote (Samsung, LG, Panasonic, etc.), that through the magic of HDMI CEC (over HDMI cable) can also control the AppleTV.

Many users in this thread seem to assume that, but that doesn’t make it true. CEC has nothing to do with using a third party remote for the Apple TV box. These are two independent features. By even mentioning CEC, people are looking in the wrong direction, and will never find a solution there. (The tvOS update may still play a role, though. That so many brands were affected around the same time, is a strong indicator for that.)

The third party remote uses IR to send navigation command to the Apple TV box, and also uses IR to send volume control signals to the TV or audio system. The only way to involve CEC in this, is that select AV receivers can understand volume control signals from the Apple TV box, if so configured.

Use other remotes to control Apple TV - Apple Support

Some TV remotes are designed to work additionally for some other devices (e.g. my 2021 Samsung TV remote). If needed, configure through the TV to handoff controls for the active HDMI device. Those settings may require having CEC active, but the commands do not go from TV to Apple TV box; the remote sends commands to the Apple TV box directly. Note that this didn’t work for me anymore after updating to 17.4 initially, until I connected the TV through Bluetooth. CEC kept working fine, though.

• recover 17.4 but the full version, not just the Delta Package Apple pushes out as the update

Full version, delta package? Please explain

btw, I ordered a new AppleTV 4K which won’t suffer from the CEC bug. And I talked to Apple technical support and have an appointment for this afternoon to have mine de-bricked. So I’ll have that one to give away.

I'm pretty sure there's no "mini update".

SocialSpit I ended up with an interesting story. I took the AppleTV to the closest Apple Store but was told that they lacked the resources to fix it and offered to send it out for repair. I decided to send it in myself and have it repaired and returned to my home. Apple sent me a shipping box but it didn’t include the return label. Speaking with Apple tech support discovered a problem preventing the creation of that label with promise they would sort it out quickly soon after I received a message from that Apple Store to bring my bricked AppleTV to swap with the refurbed unit. So I did that. Today I received notice from FedEx of a delivery scheduled for Monday. It’s likely that will be another AppleTV 4K. I think I’ll need to again speak with tech support.

Try this. My Apple TV 4K remote once went berserk with the volume control. I fixed it by restarting the remote itself.

If your Siri Remote or Apple TV Remote isn't working - Apple Support

If your Siri Remote or Apple TV Remote isn't working - Apple Support

Follow the instructions to restart your remote.

Confirm. Same on 3 Apple TV 4K after update from 17.3 to 17.4.

Same here, after 17.4 no HDMI CEC with Panasonic GZ960 (VIERA link). Apple TV 4K 1st gen.

Worked flawless for years... hope a fix soon.

Maybe trying 17.5 beta...

Same here with AppleTV 4K model A1942, tvOS 17.4 (21L227)

TV Philips 55OLED804/12

You didn't unplug & plug back in enough. It took me at least 10 times. I think you gave up to soon. It seems like the popup will not appear but eventually it does!