apple 8p64g supports ios14.

according to apple official website in August 22, IOS 14 supports the following devices:

iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone XS Max, iPhone XR, iPhone X, iPhone 8, iPhone 8 Plus, iPhone 7, iPhone 7 Plus, IPhone 6S, iPhone 6S Plus, iPhone SE (1st generation), iPhone SE (2nd generation), iPod touch (7th generation).

Extended information:

In the Bluetooth option of Airpods Pro in iOS 14 Beta6 released on August 26th, 22, the switch of spatial audio was added, but it was temporarily unavailable. In the Bluetooth option of Airpods Pro in the official version of iOS 14 released in the early morning of September 17th, 22, users can experience spatial audio and stereo sound effects.

parallel audio only supports audio and video such as Dolby 5.1/7.1/Atmos or DTS. Before you can experience and use space audio, you need to upgrade the Bluetooth firmware version of Airpods to 3A283, and the previous firmware version was 2D27.

Baidu encyclopedia -iOS 14