At first I would check the Power supply
[ROM][Android9.0][RockPI 4A/B] Android P firmware released
Do you need Android+TWRP？
Now have you successfully booted android on sd?
Yeeesss please xD
It’s not in our release area, it’s too difficult to maintain.
I did get it to boot once. I do think some of it was the power supply.
2019.11.22 new version release.
2020.03.04 new version release.
2020.03.20 new version release. Supprot Mraa Java API!!!
Hi,
I already asked here:
I’m using an airmouse and unfortunately the right mouse button is not working as back action. Changing to a normal mouse doesn’t work either.
Moreover some Apps don’t work in full screen, meaning the Navbar is still visible. Is this App related or an Android Problem? I remember there was an immersive mode in Android back in the days.
Besides, nice release 
!
I’ll look at the mouse problem.
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Thank you very much!
Hi Lili,
I think the new version looks very good. With the control bar and which is also the OFF button.
Now you can also rotate the screen (90 ° portrait) and the USB touch is also rotated. But after a restart the touch is back to 0 ° - landscape. Can you still adjust that?
Restart does not work. Android shuts down and stays off. Even if you want to restart in recovery mode, the PI remains off.
Thanks in advance.
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Thanks for your feedback.
Any update planned?
The last update was a week ago, did you use it, RockPi-android9-20200522_1559?
Oh, my fault 
Thanks for the hint. I’ll try and report asap!
Downloaded and tested. Works great! Especially right mouse button is working!
Many thanks for the update 
Hi, I’m experiencing the same issue with last image 20200522_1559. We can rotate HDMI output to 90º in portrait, but touchscreen is still working in landscape mode 0º
It may be fixed in the next version, but there is no solution yet.