There are currently six iterations of AirPods.
AirPods (1st generation) (B188AP)

- Processor: W1
- Firmware:
- Initial firmware: 3.3.1
- Latest firmware: 6.8.8
- Internal Name:
AirPods1,1
AirPods (2nd generation) (B288AP)
- Processor: H1
- Initial firmware: 1A661
- Latest firmware: 6A300
- Latest beta firmware: 6A5289c
- Internal Name:
AirPods2,1
orAirPods1,2
AirPods (3rd generation) (B688AP)

- Processor: H1
- Initial firmware: 4B52
- Latest firmware: 6A300
- Latest beta firmware: 6A5289c
- Internal Name:
AirPods1,3
orAudio2,1
AirPods Pro (B298AP)

- Processor: H1
- Initial firmware: 2B576
- Latest firmware: 6A300
- Latest beta firmware: 6A5289c
- Internal Name:
AirPods2,2
orAirPodsPro1,1
oriProd8,1
AirPods Pro (2nd generation) (B698AP)

- Processor: H2
- Initial firmware: 5A374
- Latest firmware: 6B32
- Latest beta firmware: 6A5299b
- Internal Name:
AirPodsPro1,2
orAirPods3,1
AirPods Max (B515AP)

- Processor: H1
- Initial firmware: 3B71
- Latest firmware: 6A300
- Latest beta firmware: 6A5289c
- Internal Name:
AirPodsMax1,1
oriProd8,6