Despite following all the support information and YouTube tutorials I cannot get my AirPods Pro 2 to take the OS 26 beta firmware. My iPhone 14 Pro Max showed the option once now it does not give me the option. I get it on my Mac mini (M2). It still doesn't update.

Despite following all the support information and YouTube tutorials I cannot get my AirPods Pro 2 to take the OS 26 beta firmware. My iPhone 14 Pro Max showed the option once now it does not give me the option. I get it on my Mac mini (M2). It still doesn't update. I’ve left them overnight and rest them twice. Help