Yesterday I downloaded the public beta configuration profile and installed 9.3 PB1 on my iPhone 6S Plus. After that i was fiddling in the settings and accidentally deleted the beta configuration profile. I've been trying to download it since, but keep getting "Unexpected error has occurred" every time I tap "Download profile". I tried to reboot the phone, and I also tried "reset all settings", with no success. How do I download the profile again?