First you need to become our premium member, you can purchase from https://ipastore.me
After that, your iOS device UDID will be registered with Apple.
The following is how to install iOS 9 and Watch OS 2 beta
Install iOS 9 beta on your iPhone
Step 1: Go to our beta firmware download site: http://ibetastore.comDownload the firmware according to your device type.
Step 2: After download, open iTunes, hold 'Alt' key and click restore iPhone, select the firmware you just downloaded
Wait your iPhone reboot and all done.
Install watchOS beta 2 on your Apple Watch
Step 1: Pair your Apple Watch
Step 2: Charge your Apple Watch do that it has at least 50% charge and keep it connected to its inductive charger throughout the installation process
Step 3: Connect your iPhone to Wi-Fi
Step 4: Place your iPhone next to your Apple Watch
Step 5: Download the watchOS 2 beta Configuration from the attachment below, and install it to your iPhone (drag it on iTunes while your iPhone is connected)
Step 6: Launch the profile, tap Apple Watch as install location and reboot when asked
Step 7: Launch the Apple Watch app on iPhone
Step 8: Tap My Watch → General → Software Update
Step 9: If requested, enter your passcode
Step 10: Wait for the Apple logo to appear and watch the progress bar fill in completely
Step 11: Your Apple Watch will reboot once the update is completed
Warning: Watch OS 2 beta is very buggy, if you are not a Developer, should not install and try