[Xperia Z3 Tablet Compact Original Android Developm] lowtraxx:
This ROM is no longer maintained. Sadly the last provided zip files got deleted by accident. If anyone can provide them, I will re-upload.

Disclaimer: Flash at your own risk! Backup your data before flashing! I am not responsible for bricked devices, World War III or your exploding cats!

Warning: The SGP611 images are not tested, but just built by me, as I do not own the device. But as the two devices are the same except for the 4G Modem, it should work. If not, please let me know.

About:

As my beloved SGP621 was just collecting dust, I decided to try porting Android 7.1 AOSP onto it.

And voila, with a few tweaks here and there, it works (for the most part).

What works:

- Display

- Sound

- WiFi

- 4G Data

- Bluetooth

- NFC (somewhat flakey, but much better with fixes in V4)

- LED

- Magnetic Cover Sleep/Wake

- WideVine DRM

- Double-Tap to wake

What doesn't work:

- FM Radio (working on it)

- Camera (Taking Pictures works, but sometimes the camera is not able to connect. Taking a video crashes the mediaserver.)

- You tell me

I have used it for the last few weeks. Battery life near optimal now and I had no crashes up until now. If your battery depletes rapidly, please disable NFC and check if it betters things. Then comment here, so I can look into it.

Keeping your data:

If you come from an earlier version of this ROM it should suffice to only flash boot.img and system.img. Coming from Stock or another ROM you could try to not flash userdata and see if it would keep your data, but I think it will not work in most cases.

Flashing:

Flashing userdata it is like doing a wipe. So BACKUP your data! You have been warned!

To flash it, you need to put your tablet into fastboot mode (VolUp + plugging in USB-Cable) and then flash the three image files from the zip file in the provided link like:

fastboot flash boot boot.img
fastboot flash system system.img
fastboot flash userdata userdata.img

gapps and/or root:

If you want Google Apps and/or root you need to download official twrp for scorpion windy (or inofficial for scorpion) from here and flash it to the FOTAKernel partition with the following command:

fastboot flash FOTAKernel twrp-3.0.2-0-scorpion_windy.img

After that you can boot into recovery by hitting VolUp multiple times once the LED flashes purple until it turns orange.

From there you are able to flash

- gapps for Nougat 7.1 arm (nano confirmed working, others could be problematic)

- Magisk-V8 and phh-SuperUser (confirmed working)

Tips for better battery life:

I installed Naptime to trigger deep doze as soon as the tablet goes to sleep. I also enabled zzmoove cpu gov and noop scheduler in the kernel options. Because of the high display brightness, I installed Lux Lite, to dim the screen if it is darker. This leads to me getting standby battery consumption of around 1.2% per hour (measured with GSam Battery Monitor) which is nearly the same amount I got with stock.

Changelog:

18.11.2016 - V4:

- Integrated newest Android Patches from Sony and Google.

- New binaries from qcom (camera, sensors, display, ...)

- Custom kernel with additional fixes, FMRadio patches (not working yet) and zen I/O scheduler

- Fixes and Enhancements here and there

08.11.2016 - V3:

- Integrated newest Android Version NDE63X from earlier today.

- Integrated and enabled WideVine DRM, so that Google Play Movies is now working.

- Custom kernel with additional zzmoove governer and adreno_idler patches to lengthen battery life

- Fixes and Enhancements here and there

04.11.2016 - V2:

- switched the Camera subsystem to HAL1 after discussion with the sony camera guys

- fixed most of the camera related crashes and hangs. Quality of the preview is poor, but pictures are okay.

- Taking a Video crashes the mediaserver and yields no playable result as of now.

- added build for SGP611, which is untested as I do not own the device. But it should work.

02.11.2016 - V1:

- Initial release: Everything except Camera is working. Camera uses HAL3.

Thanks:

- Sony, for providing awesome AOSP support on github

Downloads (currently not available):

V4 - GDrive - SGP621: scorpion-nougat-7.1-v4.zip

V4 - GDrive - SGP611: scorpion_windy-nougat-7.1-v4.zip

Older Downloads:

V3 - GDrive - SGP621: scorpion-nougat-7.1-v3.zip

V3 - GDrive - SGP611: scorpion_windy-nougat-7.1-v3.zip