Bafang M500/M600 Tuning & The BESST Tool

[Dado]

Hello, does anybody know if is possible to change the 0x0774 byte in Firmware to any value (for example to 04) to decrease max. motor power ? Would it work, or FW has some checksum, or it bricks controller ?

Hello Peter.

Where did you get this byte position and are you sure this will change max motor current? It is not so easy. )
You can try, dont worry about CRC, you will get just error message that CRC does not match, but Besst anyway allow to flash your modified firmware bin file. Possible to calculate also new CRC. No worries about bricking, so far still worked when I then re-flashed with original firmware.

 

[YZDude]

Hi, have an issue with battery range after changing firmware.

I have M600 motor, 43V battery, C245 display that connects to Go+ app.

Just updated the firmware to: CRX10NC4818i132014.6-20191126

I charged the battery to full and connected it to bike, display read 60% and dropped to 20% in about 5 miles and cut back assist and so forth.

Could this be a problem because I uploaded 48V firmware to a bike with 43V battery?
If so, is this correctable in BESST? Thought I would ask before adjusting anything.

 

[Dado]

Hello. You can upload 48V firmware but then of course would show wrong SOC as you writing with 43V battery.

Go with 43V firmware. You wont get anything with 48V firmware and 43V battery, just less power (as 48V firmware has less max. power)

Put there attached 43V firmware. One is for oldM600, one for new.

 

[YZDude]

Hello. You can upload 48V firmware but then of course would show wrong SOC as you writing with 43V battery.

Go with 43V firmware. You wont get anything with 48V firmware and 43V battery, just less power (as 48V firmware has less max. power)

Put there attached 43V firmware. One is for oldM600, one for new.

Thanks for providing these.
I did load 45.7 back in, is that for ‘new’ 600? That one has the bike taking off like a rocket, a bit too fast for trails here. I can try 45.4 if that might be more calm.
Also, not sure if I can tune better with Go plus app, it seems a little difficult to work with.

 

[Dado]

Only one u will be able to load into your controller. And no, M600 does not have any possibility to tune. Just to set speed limit, wheel size and circumference.

 

[YZDude]

Only one u will be able to load into your controller. And no, M600 does not have any possibility to tune. Just to set speed limit, wheel size and circumference.

Would M510 have more tuning capability?

 

[Dado]

That is right, M510 and M560 has some power adjustments. Also one firmware for M620.