I just bought an OTHA D13 Projector with RK3328 and Android.
I did an upgrade to a recent version of Android (20180831) and now it is freezin at the main screen during boot.
Do you know if I can try to reinstall the software using one of the firmware you have for other devices based on RK3328?
I tried to reset via the recovery menu to factory situation but anyway the version is still the same and won't load.
Any idea about also a possible downgrade? I was not able to find any piece of software for this device on the web. Moreover, it is exactly identical to the YUANCIN D13 but also for this one I was not able to find a solution....
Thanks for your help!