It looks like your 6 pin connectors are totally wrongly connected (I had the same problem yesterday, see above reply from Eddy Current).
What you can try (and this helped me) is to connect 6 pin connectors again but keep in mind do it only like indicated on the pic. For No.1 (connect connector 1 with 1). Don’t connect No.2 with 2, leave them free!
Thank you very much for the hint, it worked. Once connected, LED in ECU started blinking and it was already a good message.
Three points I realized:
Test on the Stand is impressive!
Were you able to successfully connect the ECU? I got mine today but I have no idea what to do with these both connectors. I Installed it and I got error 191 on the display and READY sign is already there on without pressing green button to activate it. NIU is not starting to ride
Any idea?
Thanks,
Lucas