Ok, that was a nerve wrecking day, but I managed to recover.
I restored my iPad with this procedure:
- connect iPad to PC with iTunes
- hold home and power button simultaneously for a long time. iPad switches off, switches on, Apple logo appears, and then finally the recover screen appears. Now you can release both buttons.
- choose your recovery method. I chose full recovery, installed iOS9.3 and went for a blank (factory default) iPad.
Procedure took in total 30 minutes, including iOS download, reinstall and start-up iPad. But I have a fast internet connection. I can imagine it can take hours as mentioned in other posts if you have slow internet.
Phew !
Side note: I had become very frustrated with the extreme slow performance of my iPad2 in the past year or so. With each new iOS version, the performance seemed to degrade. Even simple actions, like opening s simple App, took more than 10 seconds. Really unusable and certainly no fun.
So I used this opportunity to 'start from scratch'. hence my choice to NOT re-install a back-up, but configure my iPad as a brand new, factory default, tablet.
Initial observation shows very promising. This responsiveness looks much more like my old friend iPad from years ago!
I just installed a limited amount of Apps to monitor performance and will check if performance degrades when I install more Apps or at specific Apps.
Summing it all up: I was frustrated with the extremely slow performance of my old iPad2. I was frustrated with the iPad launch of yesterday as I was hoping to buy a new (standard) iPad with the A9X processor. Not a far too expensive iPad pro. Then more frustration since my iPad2 died after upgrade to iOS9.3.
But on the bright side, with help of the above posts I recovered my iPAD2 with iOS9.3. I took the deep dive and go for factory default, but the iPad2 seems to be soooo much more responsive. Now I don't need to buy a new iPad. Thanks Apple!