Android 9 for Rock64?

[Blinky]

-----------------RELEASE NOTE------------------------------- ------------
[rk3328_box_pie_release_v1.1.2_20190418.xml]
Uboot & kernel:
  1.uboot: Repairing small memory may cause malloc failures;
  2.kernel:fixed PCM DSP format;
  3.kernel:dw-hdmi: Fix some scenes such as the voice assistant playing the beginning of the sound loss problem;

System:
  1. Fix boot animation package with audio.wav audio playback failure;
  2.TvSettings more settings to add performance floating window function;
  3. Fix the probability of googleplayservice crash when integrating gms;
  4. Fix the problem that the focus of the playmovie&tv part cannot be operated;
  5. Fix the video conference zoom application call without sound problem;

[rk3328_box_pie_release_v1.1.1_20190403.xml]
System:
  1. Fix the invisible problem of the mouse icon on the Amazon video playback interface (frameworks/base);
  2. Fix some machines with low probability to boot systemserver no response problem (frameworks/base);
  3. Fix some apk under infrared simulation mouse click input box will not automatically play soft keyboard problem (frameworks/native);


[rk3328_box_pie_release_v1.1.0_20190401.xml]
RKDocs&RKTools:
   1. RKDeviceTest update, support lamp configuration, etc.;
   2. Update the "RK3328 Software Development Guide Document" to the V1.3 version:
a. Add a common configuration macro description
b. Update the WideWine function configuration instructions
c. Add adjustment and save of display parameters
d. Add system debugging - Lastlog open
e. Add system debugging - serial debugging
f. Add system debugging - Log automatic save system abc.
3. Add customer common custom function patch package directory RKDocs/rk3328/PATCHES
4. Update each module's documentation to the latest version.
5. Update the programming tool to v2.65, fix the exception such as erase failure;
  6. Update tools such as KeyWrite and SecureBootTool.
Uboot:
   1. Fix 8bit logo display exception problem;
System:
  1.update aosp codes to android-9.0.0_r33;
  2.secure patch update to SPL 2019-03-05;
  3. Update hwc to version 0.56:
    a. Repair h HDMI color mode switching failure;
    b. Fix some apps to exit the splash screen;
    c. Fixing the vrefresh calculation exception causes some resolution settings to be abnormal.
    D.swith to new code branch
    e. Fix kodi playback hdr invalid problem
  4. Update settings new features:
    a. Add the application dynamic uimode whitelist function;
    b. Add the power button function menu option;
    c. Add a home page option;
    d. Repair screen saver function, fix setting screen saver setting time does not refresh abnormally;
    e. Add a boot volume protection switch option;
    f. Fix the usb option function abnormally;
    g. Fix Bluetooth Receive File option cannot open the question, etc.;
   5. Fix the boot video can not play abnormally if there is an animation package;
   6. RKDeviceTest update, support lamp configuration, etc.;
   7.omx library update, optimized 4k online play;
   8. Update the video library to the latest, fix memory leaks;
   9. Fix screencap exceptions in some scenarios
   10. Fix settings Advanced function Power button configuration user version invalid problem:
   11. Fix the problem that the network adb switch and the abc background log save switch are invalid under the user version;
   12. Fix some selinux permissions issues;

[rk3328_box_pie_release_v1.0.0_20181206.xml]
Initial release

Just a pity we will never see such Android Pie firmware since it was abandoned.