Hello hello, I'm new to this particular forum but pretty actively involved on a few others out there. I mostly bark on about Bafang m620 UART/CANBUS protocol stuffs as I own bikes with both. I have experience programming/flashing BBSHDs and UART based ultra motors. I also own the BESST tool and have experience modifying and flashing the m600 motors. I have YET to get my hands on the firmware for the CANBUS based m620 so if anyone out there is reading and has access... PLEASE PLEASE PLEASE drop me line!