[Nexus 7 Android Development] TuxVinyards:
Installed the ROM yesterday. Really surprised how fast it was. Big improvements over Lollipop (CM12) !

I had the same troubles as [MENTION=4793590]beppemila[/MENTION] though ..... and like [MENTION=2188693]AndDiSa[/MENTION] I reckoned it was down to permissions. Playstore was also telling me to sign in again, every time I went there. And sync was generally not working. I tried a whole load of install methods. Followed a whole load of advice, even full root and 'apkmirror' add-ons and goodness knows what.

Everyone seems to have their patent install methods. This is the one that I figured out and have had no problems since. FWIW details are here:

The tablet was previously oem un-locked with fastboot, using the .deb package. I use Linux desktops. Not sure how you do this with Windows.

Boot the tablet and use vol - to get to recovery/twrp. Wipe all partitions then re-boot to recovery to re-initialise.

Connect the tablet to the desktop file manager with USB cable. Copy the AOSP ROM to the TWRP folder. Go back to the tablet, use twrp to install.

When finished, wipe caches and do a NORMAL re-boot to SYSTEM. This is different to the major advice, I know, but it does work. If you do one straight after the other, this is what I found to be the cause of the playstore and sync crashes.

The 'Android' logo sits there for a while till it has sorted itself out. Takes a minute or two.

Now for the GApps bit. I prefer the 'pico' GApps over the 'mini'. The search 'Google App' is big, bloated and not needed. I prefer Duck Go for searching and don't like muttering things like 'okay google' anyway. Maybe it's personal preferences but I tend to think it works better, as do a lot of other people on this thread. See OpenGApps dot org

In order to install the GApps and not get stuck on the welcome screen we need to set up the Wi-Fi first. This is the other reason for normal booting. between stages. You may also want to go to settings and apps and disable the 'yellow' email app. It's less annoying and confusing when you add your google account. I also took off play services permissions for things like body sensors. If you put the dynamic mini package on there, when you do updates Google installs VR software for you, as if! LOL One last thing that I did was to disable the SU performance app. It was just a thought that playstore was detecting a possible nefarious presence at boot time. Maybe, maybe not?

Now you have done the Wi-Fi, go to recovery and install the GApps package. Same as you did with the base ROM. Wipe the cache and boot to system. You can then go to accounts > add. You should now find playstore and google sign-on working as expected.

As for the the MTP issue: I had this quite a bit on my first install. This happened to me once only using this solution. I realised that that was me failing to unmount the USB properly in file manager. I then went on to disable USB debug using developer mode (usual method; settings,about tablet, tap the build number ten times) which may have been the final cure though. It hasn't happened since.

So, I hope this helps people, makes sense and I haven't missed anything out. This is my first post on this forum. (Other posters and Devs: Thanks and +1) If you try this method and it works, make sure to sign up if you haven't, and to let us all know how you got on.