Hello I am a new user here! weeee :-)   I have some questions, 1st one: Have anybody discover what are the points to short in order to enter MASKROM mode? I have enter it booting the M4 without sdcard or emmc, just to test that I can connect to the M4 via rkflashkit through the USB-C bus... and it does. So, I would need to to the same but with the emmc connected to the M4 and short the EMMC_CLK to GND (I guess). Have anybody discovered these points in the M4 PCB and willing to sho