Beta 2.0.0.
With iOS devices, betas are released through Apple's TestFlight program.
You first need to download the Apple TestFlight app from the App Store into your iOS device.
You then go to https://testflight.apple.com/join/6uEyoSl3 from Safari.
Be mindful that Betas should only be used if you are already familiar around ASIAIR -- bugs that crop up in the Betas could be more confusing.
Also, make sure (if you are on the first two versions of the ASIAIR hardware) that you first make an archive of the existing firmware so you can go back to the old firmware again. Otherwise it is a real pain to try to go back to the released version of ASIAIR firmware.
If you have a Mac with Apple Silicon, you can also download TestFlight from the iOS App Store, and load the beta ASIAIR.
Remember -- make a copy your old firmware first, in case you need to go back to the old version of ASIAIR.
Chen