Cannot access advanced settings YL61F

cmy28

New Member
Region
USA
I got a new ebike with Yolin YL61F display. I've found manual online and it says hold +/- together for 2 seconds to access advanced settings. However, nothing happens. What am I missing?
Can the manufacturer lock up advanced settings? If so, is there a way to unlock it?
And if I need to get a new display or controller for this reason, which one is the one being locked up and needs to be changed? I hope I can change only one of them by getting an unlocked device of the same model, so that compatibility isn't an issue. Is this possible?
Many thanks!
 

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