I'm trying to update to 15 beta 2 a brand new iPad Pro 12.9 running 14.5.1, from a brand new M1 MBAir running Monterrey beta 2 (for M1 Macs), and it was "updating" for a couple of hours. I gave up and then downloaded & installed "Device Support for iOS 15" - and tried again. Same results. I see that there's a known issue regarding the 11" iPad Pro - but does anyone have any suggestions for me?
I do have a 2020 iMac that's running Big Sur 11.4 - should I attempt the update from there?
So, it turns out that perseverance is key to this problem, too...
Despite having given up earlier today, I just couldn't stand by and watch my iPad become a paper-sized paper-weight - so I tried it a couple more times. Same exact procedure, each time expecting different results. Notwithstanding - finally success!!!
A big shout-out to the consumer-facing AppleCare support folks @ Apple, as it was they who suggested I try putting the iPad into Recovery Mode. The rep said he couldn’t guarantee it would work with beta software - but maybe it’d be worth a try…
So, here’s what I did to get iPadOS 15 beta 2 on my iPad:
1 - I shut down both my MBAir and my iPad Pro 2 - I connected both via USB-C cables 3 - I powered up both devices, and waited for them to fully boot 4 - I pressed the following buttons on the iPad to enter Recovery Mode: 1. Volume up (quick press) 2. Volume down (quick press) 3. Top / power button (press and hold - until laptop <- cable image appears) 4. Note: this may take several attempts (it sometimes took me over 12 tries - on each Recovery Mode attempt!) to get the “laptop <- cable” image - otherwise, it just reboots
5 - Launch Finder on MBAir 6 - Select iPad 7 - A dialog box appeared, select Restore 8 - Hold down the option key and select “Restore and Update” (so that I could select the .ipsw image - instead of contacting the Apple software update servers. 9 - Select the image “iPad_Pro_Spring_2021_15.0_19A5281j_Resore.ipsw” 10 - Cross fingers and repeat as necessary
Honestly, it took me 3 full days and tons of attempts. In the end, I have no idea what was actually causing my iPad to hang-up - and at this point I don't care. It works, I'm happy, and I've got a deadline to slay...