[Android Builders Collective] buffal0b1ll:
ABC_GZOSP_rom 8.0 Oreo for Nexus 9 - Flounder is here!! It's not for the faint of heart. HW acceleration isn't working on Oreo (see more on this below). Read on and decide if you're up for it.

FOR flounder (wifi variant) ONLY. DON'T EXPECT MOBILE DATA TO WORK ON flounder_lte VARIANT.

Huge props to GZOSP's [MENTION=4139665]martinusbe[/MENTION] and [MENTION=3265523]slebit[/MENTION] for the GZOSP base and device tree! Huge thanks to [MENTION=5501864]USBhost[/MENTION] for the inline built FIREICE kernel and the FIREICE kernel zip listed below that you'll still need to flash to get the ROM to boot for now. Heaps of gratitude to the A-Team for being the A-Team!

If you want to boot flash all of these in this order

-vendor_n9f27h_aug_7-1-1_flounder.img - https://androidfilehost.com/?fid=673368273298977501

-Gzosp-flounder-8.0.Alpha.1.0-UNOFFICIAL-20170930-1359.zip - https://androidfilehost.com/?fid=962021903579481499

-BeansGappsMini-arm64-Oreo8.x.x-unofficial_09.30.17.zip - https://androidfilehost.com/?fid=817906626617935061

-FIRE-ICE N K10.6.9.1 09-15-2017 13-47-45.zip - https://xdaforums.com/nexus-9/orig-development/kernel-fire-ice-t2930451

If you want to root, I recommend phh superuser. I don't use SuperSU but that should work fine too, if you want to go that route. I had major system lag on Magisk 14.0 and I have no idea why. You can try Magisk but I don't recommend it.

-superuser-r259.zip - https://superuser.phh.me/ https://xdaforums.com/android/software-hacking/wip-selinux-capable-superuser-t3216394 https://play.google.com/store/apps/details?id=me.phh.superuser&hl=en

Don't panic if Google boot logo stays up for a couple minutes before jumping over to boot animation. BE PATIENT!

If you get any Google apps force closes after it boots just keep closing them and keep moving on with setup. If you have any trouble in Setup Wizard this ROM comes with four corners tapping feature to bypass setup wizard (tap top left, top right, bottom right, bottom left, top left, top right to exit setup wizard). If setup hangs on checking for updates and crashes, then do the four corner trick and you're in. Then add your google account manually thru Settings>Users & Accounts>Google. Keep trying. Once this thing settles down after a reboot or two it's golden.

If you want to use Netflix, the current Playstore/apkmirror version will not work. It crashes on opening the app with a Netflix error.

TO USE NETFLIX ON THIS BUILD YOU NEED TO DO 2 THINGS

1. Use this detached-from-Playstore apk that will never try to update on Playstore. THIS OLDER NETFLIX VERSION CANNOT DOWNLOAD MEDIA FOR OFFLINE VIEWING, but it streams and casts just fine on the flounder when connected to wifi.

-Netflix4.8.5-signed.apk - https://androidfilehost.com/?fid=529152257862715472

2. Use a root file explorer to delete or rename (e.g. with extenstion .bak) these 2 files:

/system/vendor/lib/liboemcrypto.so

/system/vendor/lib/libdrmdecrypt.so

Then reboot device.

Things to know.

-This is ABCrom settings & framework, and custom ABCrom AOSP apps on top of GZOSP Base. There are some system apps included in GZOSP base that you'll find in there (e.g. a working Calculator, Calendar, Camera2, Clock, Contacts, Music, a nice Gallery, DevTools, and WebView Browser)

-Google Camera 4.3.016 is recommended if you want it. Download it here https://www.apkmirror.com/apk/google-inc/camera/camera-4-3-016-147548696-release/

-Substratum works great but prompts for root permissions, so root if you want to theme. The theme in the screenshots is called Fetish Oreo and you can find it here https://xdaforums.com/android/themes/theme-substratum-oms-fetish-oreo-t3678756

-The kernel is set to SElinux Permissive

What's working?

-Everything but...

What's not working?

-OK Google Hotword (so what? it's a tablet not a phone. your hands aren't free? Sorry.)

-Swipe on AOSP keyboard. Use Gboard or Swift or.....

-HW acceleration (theres evidence of HW acceleration errors in the logcat, but it's not affecting Youtube 1440p-4k, MX Player on HW mode, VLC, HBO GO, Amazon Prime Video. These are all tested and working well on my device with no lag).