[knob]

If you have a blank screen this is how I get to the upgrade option on my RockChip player:-
.
switch player on wait for it to boot up to get to the main menu.
press the down key 8 times to get to the settings icon.
press the menu or select button to go into the settings menu.
press the down key 4 times to get to the system option.
press the menu or select button to go into the system menu.
press the down key 1 time to get to the upgrade option.
finally press the menu or select button to go into the upgrade option.

Then Connect the USB and use ConsumerUpdate.

If it says "Not found any ROCK USB device", then your player is not in upgrade mode.

you may have to restart your player and try this several times if you press a key wrong!