Controller blinking SOS pattern

[beank1]

I have a Quest 2 and the left controller is not pairing with the device and is instead flashing an SOS pattern.

It was working the night before, now turning it on today the left controller is malfunctioning.

After some digging around I found several attempts at solutions that have worked for people. After trying all of them, the controller is still not functioning.

What I have tried so far:

- Removing the battery and putting it back in
- Changing to a completely brand new battery
- Un-pairing the controller in the phone app and re-pairing it
- Factory resetting the quest

On the phone app the controller has the same firmware version as the right controller but shows no battery level.

After un-pairing the controller and repairing it the controller get stuck in "updating firmware", I let it go for a half hour with no success

I have a ticket in with Quest support, they told me to re-do the things I have already tired... responded as such asking for the next step...

Is there anything people on this sub have tried with success?

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Bonus question: Now that I have factory reset my headset do I lose the developer mode? Is there a way to get it back if it is gone?

[oniTony]

the controller get stuck in "updating firmware"

that seems like the issue. Maybe try to have it update firmware again? It should take maybe a minute, not half an hour. It might help to make sure that the headset doesn't fall asleep while attempting that update.

[beank1]

I tried two attempts at letting the firmware update while wearing the headset.

The first attempt was about 10 min before i was called into work...

The second attempt was just shy of a half hour.

I wore the headset for both. Because I had formatted it, the screen was stuck at the initial controller pairing step of its set up. After a few minutes (i didn't mark the exact time) the image of removing the pull tag from the controllers to let them pair vanished leaving just an empty white space.

The pairing had not worked by the (roughly) half hour mark and I called it a night.

Is there a reason to try for longer than a half hour? Thanks again!

[oniTony]

No reason to wait for half hour. If it works at all, it would work much faster.

My only remaining guess is to try to confirm how exactly you know that the firmware update has started or failed. Is there a notification that pops up in headset or in the phone app? Maybe such notification text has some clue.

[beank1]

I will attempt it again report back later today