I have been struggling with this for a couple of days and could use some pointers.
I am trying to install nethunter without the installer since the installer uses 5.02 it seems as the stock image. Here are the steps i performed:
1. Flash stock 5.1.1
2. Flash supersu and installed busybox and twrp boot manager
3. Reboot into recovery and i tried flashing both nethunter 1.21 and 1.22 (on a seperate occasion)
The install completes successfully and i click reboot system to get out of twrp recovery. Symptoms
1: on reboot the nexus 9 stays on the swirling circles screen for over 30 min.
2. I tried powering off and powering on and it gets to the starting apps dialogue but then reboots and loops.
Any help would be appreciated