I need an up-to-date tutorial on how to reprogram the bbs02 to use a 52V battery. The tutorials I'm seeing are a few years old and that makes me think that the firmware downloads that I am supposed to import are out of date .
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wrote a guide:
https://www.johnnynerdout.com/forum/general-ebike-forum/bafang-bbs02-bbshd-controller-programming-a-guide