Power on the receiver and press the Menu button on your remote.
Locate the file on your USB drive and press OK to begin the process. Download QBOX Q999 1506G STG1 29114 20200401 bin
If you experience glitches after the update, performing a "Factory Reset" from the system menu can often clear any residual configuration conflicts. How to Update Android TV Box Firmware Manually Power on the receiver and press the Menu