Bafang M820 Firmware thread

[Joshack92]

Which is the best firmware for emtb on 48v battery?

 

[patdam]

Which is the best firmware for emtb on 48v battery?

Personally i'm use this 4812.

But it seem i'm "particular" user (1.93, 100Kg, high mountain use).
i have power cuts if i use 100% power in hard uphill (normal following bafang return) and occur with all software tested. i have setted S+ at 90% and i never use BOOST (setted at 100%)
I consume +- 1/2 less than M510, currently now with 9.6Ah battery, i never consume more than 60% (1600 D+ at max)

 

[like-bike]

Hi everyone, I have a problem with the firmware of my m820 48v. I should have the 25 km/h limit by law. I sent an email to Bafang but after a few emails nothing, he told me that it can be done with the phone via bluetooth.

 

[Freda]

Hi everyone, I have a problem with the firmware of my m820 48v. I should have the 25 km/h limit by law. I sent an email to Bafang but after a few emails nothing, he told me that it can be done with the phone via bluetooth.

So if I understand correctly your limit is too high. You can only limit the assist speed by a percentage from max with GO+ app. After you need to test where it actually stops assisting and adjust if necessary.
Only with BESST tool can you set an exact speed limit.

 

[like-bike]

So if I understand correctly your limit is too high. You can only limit the assist speed by a percentage from max with GO+ app. After you need to test where it actually stops assisting and adjust if necessary.
Only with BESST tool can you set an exact speed limit.

ok thanks a lot, bafang told me that via BT it was possible to update the firmware, made by them for me, to have the right limit. I don't know anything else. Too bad that from a smartphone it can't be done.

 

[Freda]

ok thanks a lot, bafang told me that via BT it was possible to update the firmware, made by them for me, to have the right limit. I don't know anything else. Too bad that from a smartphone it can't be done.

OK, now I understand. Yes you can update your firmware with the GO+ app. With the serial number from your motor it will automatically find update for you. You can not choose any other, only update or not update. That will probably solve your problem.

 

[like-bike]

OK, now I understand. Yes you can update your firmware with the GO+ app. With the serial number from your motor it will automatically find update for you. You can not choose any other, only update or not update. That will probably solve your problem.

well I don't know I tried from the app but I can't do anything. I think I'll buy the BESST, since Bafang doesn't answer me anymore

 

[like-bike]

hi, my engine does not communicate with my DIY battery and therefore my residual charge percentage is wrong. I don't know how to do it with the BEEST. does anyone know how to do it?

 

[ficorama]

hi, my engine does not communicate with my DIY battery and therefore my residual charge percentage is wrong. I don't know how to do it with the BEEST. does anyone know how to do it?

Greetings. Try another firmware. The same thing happened to me with one firmware. I don't know which one now, but I'll try to find it.

 

[like-bike]

Hi, I tried to update the firmware to the CRX30PC4812E102012.1. But nothing, I can't get the battery to be read.

 

[parnel bosch gen4]

Try 43v soft from post #4

 

[like-bike]

Try 43v soft from post #4

ok, but my bike is 48v. is it okay anyway?

 

[parnel bosch gen4]

Yes

 

[like-bike]

Yes

ok thanks done now i see the battery percentage. it is not exactly correct with the bms one, but it is better than before. regarding the firmware, how does it make the motor and battery behave?