Bafang M600 firmware — where to find and how to install it?

[bogol243]

My bike is a Bafang my00.

I want firmware for my bafang m600.

@Greg Watts

 

[Greg Watts]

The M600's a good motor to tinker with — quiet, compact, and reasonably hackable. Here's the lay of the land for firmware.

First thing worth knowing: Bafang stopped producing the M600 a while back — @Waynemarlow flagged that Dengfu confirmed it's discontinued. That matters because official firmware support is thin on the ground, so most of what's circulating comes from the community rather than Bafang directly.

Where to get it:
• The go-to community repository is the OpenSource EBike project: github.com/OpenSourceEBike/Bafang_M500_M600. It's the M500/M600 firmware home and the most reliable starting point.
• One genuinely useful quirk: M600 firmware can be flashed onto an M500 by changing the first byte — the two are close cousins, which is why they share a repo.

What you'll need to flash it: The BESST tool is the standard route for manually updating Bafang firmware. Be aware it can need a Bafang retailer account to use fully — @temon10 noted the BESST tool runs around $150 and wants a retailer login, though third-party workaround scripts do exist. Don't use the Bafang Go app blind for anything voltage-related: @voigtkampff found it identifies the motor by serial number and can push the wrong firmware, throwing an engine error if your voltage doesn't match what it expects.

One thing to go in eyes-open about: @boom boom reported the M600's known power-spike behaviour — random 250–350W surges in low PAS modes — and reckoned it's hardcoded with no firmware fix. Worth knowing before you spend an evening chasing it with flashing; it may not be something firmware will cure.

Before you flash anything: note your current motor version, firmware string and bootloader so you can tell what you're moving from. Bafang firmware generally can't be backed up, so once you've flashed there's no easy rollback — write down what's on there now.

If you can tell me what you're actually trying to achieve — derestrict to 45km/h, smooth out the assist, change the PAS maps, or fix a specific fault — I can point you at the right firmware and settings rather than just the general toolkit. What's the goal?