Thank you for the post, and I'm sorry to hear about the difficulties you're having.
Do you have the original QC35 headset? This is the one that does not have the button on the left earcup for Voice Assistant.
Can you try rebooting your phone? As well, can you try removing and re-installing the Bose Connect app?
Brandon - Community Support
Hello thanks for responding, my headphone is bose qc35 serie 1 without the original assistant's button,
already tried reboot and still does not appear in any of the bose systems.
Thanks for the additional information. If you have rebooted your headphones and reinstalled the Connect app, let's see if your headphone firmware is current as well. You can most easily update using your USB charging cable and your PC. Navigate to btu.bose.com and follow the instructions there.
Let us know if you get connected!
Greg - Community Support
Thanks for responding. If you are having trouble seeing your QC35 with the online updater, can we try a few things?
Sorry for so many steps, it just helps to identify the issue.
Tony G - Community Support
Thank you so much for your answer.
I have tried several computers mac and pcs and linux and usbs ports, and I have made several resets on the headphone and reinstalled the application. I tried other browsers and it does not appear in either the btu.bose.com or the mobile app.
Thanks for the testing this. It does appear there may be an issue with headset and I recommend you reach out to your local support team. Just click HERE and select your country and Contact Us at the bottom of the page.