I've searched this thread for any number of keywords related, but can't find answers to the following question:
I've got a 2012 Nexus 7, running TIMUR's ROM and Kernel (for OTG support + fast charging). Unfortunately, that's Android 4.2, so not the 5+ that AA seems to need.
Do I need to have the AA app installed on the tablet as well as Headunit Reloaded? If so, how do I find an APK for AA that removes the minimum version requirement?
At the moment I've got the "trial" APK installed as I'm waiting to hear back from you RE: purchase of Mike's (RIP) version that no longer works.
I briefly managed to get it working using WiFi (but only with audio on the phone) and have been prompted about MTP over USB when I've plugged it in once or twice (but the prompt only ever opened Headunit Reloaded to the main screen, not AA). I've read the instructions a thousand times and from my understanding all I need to do is plug my phone into the OTG cable's USB port, which should then start AA on both devices right?
If the issue IS that I can't install AA on the tablet with 4.2.2, I can always get one of the Marshmallow/Nougat roms with OTG support (I saw a beanstalk one the other day) but they don't seem to have (or at least not documented) support for things like auto-sleep on power loss/ fast charge (1800ma, though I've tried turning this off as suggested in the troubleshooting steps) on OTG etc. Any recommendations for a slim ROM that will run all this stuff? OR I suppose I could use a stock ROM (5.1) but I'd need a Kernel that supports USB OTG charging right?
Thanks in advance!
Edit: I've installed another ROM (Beanstalk 7.1) which has an OTG supported kernel, and that "works" for OTG and charging. "Works" because I can now install android auto and run it, but I can't get headunit reloaded to work still. This is actually far less stable as well, as I keep getting force restarts, which then bootloop if I've got an OTG cable plugged in. If I get past this hump with some help I'll certainly help to write a from-scratch guide to getting this all sorted!