Hello e-biker
Would you like to set or tune motor controller parameters? Or update firmware of M500, M510, M560, M600, M620, M820 motors and run Calibration?
K1 Flash is compatible with all Bafang CAN bus motors (5 pin connector with “house” shape) and can set at least basic parameters for all CAN Bafang motors, including CAN hub motors.
 
‘Simplicity’ was the moto during developing. Do not expect any display or BT connectivity, everything is done automated after Flash power-up and connecting to motor. Status can be identified according colour LED.
 
Simple as 1, 2 ,3 …
 
1. Insert included SD card (with set of firmwares – over 120 firmwares, including M510 FC2.1 , M560 v1.5 (750W, great firmware), M620 with Power Adjustment support, M820, M600 rev.B, M500 rev.B
2. Power up K1 Flash (over USB-C cable from your mobile, power bank, charger …)
3. Connect to your CAN motor – wait for steady green LED light – all set, you can unplug device and go for a test ride. 😉
 
In a minute your motor is flashed and parameters set according config text file on SD card.
 
 
No need to get BESST and connecting to computer, finding BESST passwords (which are expiring) or spending time with Python script workarounds. Besst programmer with regular password wont allow to set speed limit over 25 km/h. Also no need to search for bin firmware files on internet. You get our professional support and advice which firmware to use and how to set parameters according your riding preference.
Plug, wait a minute and Ride... Time is money...

This product description web page is also a K1 Flash User Manual with step by step and videos.

M620 owners – there are new firmwares which supports also Power Adjustments!  750W v12.3 supports all the settings, including Assistance level, same as M560 and M510 FC2.0

So far only latest motors M510 FC2.0/FC2.1, M560 and M620 Fw v12.3 are supporting all the config parameters – including Assistance level % , which is not  supported yet over GO+ app and BT connection.
 
M510 FC1.0 and M820 are supporting Max Power at each Assistance level and Global Acceleration parameter.
 
Rest of CAN Bafang motors (including CAN Hub motors) still supports Speed limit, Circumference and Wheel size.

Motor parameters can be set in few seconds by connecting K1 Flash to your motor. Motor configuration parameters are stored on included SD card under the file AutoSet.txt. Edit this file with your computer (any text editor – notepad) to change parameter setup. You can find screen shot of this file here. There is also an explanation of all supported parameters.

K1 company can pre-set parameters according your needs (specified during ordering process) and you can continue with fine-tuning.

How to set Motor Parameters


1. Insert SD card with pins facing to USB-C connector


2. Power up K1 Flash over USB-C cable – Green LED will start to blink.

– Run power from mobile phone, power bank, USB charger, USB computer port…
– Be careful, K1 Flash has such a small consumption that some Power banks can turn off in few seconds.
– USB-C to USB-A cable is provided for free if needed.  Or you can choose an USB-C cable with display.


3. Unplug CAN connector from your Bafang LCD display/buttons.
And connect to K1 Flash.

After few seconds motor is identified and parameters from SD card are set (the one which your motor supports).
 

4. Wait for Green LED change to steady – parameters are set successfully. You can disconnect K1 Flash and connect back your LCD display. Check for new speed limit under LCD Info menu.
 
Useful notes:

K1 Flash will store your current motor settings into the file “CfgLog.txt” on SD card before each overwriting of motor config parameters. So you can still check your original motor parameters or history – parameters readed from motor are added at the end of this file.

 
When you power up K1 Flash without SD card inserted, you will get also green LED light flashing and after connecting to motor, device will set only Speed limit to 50km/h.
 
 
Important: M510 FC2.0 and M560 C2.0 (and also some firmwares for M620) motors are not supporting Throttle Speed Limit. It is hardcoded to 32 km/h or 45 km/h in a firmware. You can change only pedalling speed limit  (plus all other settings) with K1 Flash. Anyway not possible to change with BESST either.
If somebody is interested in higher throttle speed – contact us pls.


Bafang has changed logic with M510 FC2.0 and M560 C2.0 controllers and introduced Assistance % (aka Support level ) – power multiplication.

Factory settings for M510 FC2.0 are:
Max power: 50%, 75%, 100%, 100%, 100%
Support level: 140%, 140%, 140%, 230%, 340%
Acceleration 4 (out of 8) on all PASes – current ramp-up speed.
 
Factory settings for M560 C2.0 are:
Max power: 20%, 40%, 60%, 80%, 100%
Support level: 120%, 200%, 260%, 350%, 400%
Acceleration: 3, 4, 4, 5, 6
 
Colour LED descriptoion (v 1.4)
Green LED blinking – Set Configuration parameters – connect motor over CAN connector
Green LED steady – Configuration parameters set – you can unplug motor
 
Red LED steady – Force Flash ready – connect to motor over CAN connector and download will start, otherwise there is timeout 20 sec and continue with Set Configuration parameters.
Red LED blinking – firmware is downloading – do not disconnect! Takes up to 50s. 
 
Blue LED steady for 3 seconds – firmware download successful, motor will be restarted and automatically continue with Set Configuration parameters.
 
Green/Red blinking – Calibration function started – There is 5 seconds and calibration will start. 
!!! Chain must be down from chain ring! Otherwise unplug immediately power from K1 Flash to stop.
 

To update motor firmware you need a specific bin file for your motor type/controller. A compilation of firmware bin files (over 120) is included on SD card.  Mainly for M500, M600, M510, M620, M820, M560.

It is quick and simple process. Also non-IT guy can do it.  And can be done in a minute.
Just select and copy firmware bin file into /ForceFlash directory on SD card over your computer. Then just connect K1 Flash to your motor for few seconds…

K1 Flash will download firmware only when is compatible with your motor. Otherwise motor rejects this firmware file and K1 Flash continue with Set Motor Parameters procedure.

There is lot of firmwares under motor directories on SD card – filed according motor type and controller revision. You can also use your own firmware bin file from internet.

 
Note:  You can download into motor also different voltage firmware version. So be careful when selecting firmware file. Check tips at the end of this page.
How to update Motor Firmware

1. Copy firmware bin file to \ForceFlash directory on SD card.

Use your computer with SD card reader slot. There is a set of firmwares on SD Card or you can use your own from Internet.
SD card to USB adapter is for free if needed. 


2. Insert SD card into K1 device and then power on over USB-C cable – RED LED turns on  – firmware ready to download

Run power from mobile phone, power bank, USB charger, USB computer port…
K1 Flash has such a low power consumption that some power banks are shutting of power output – few customers had issues with this.


3. Unplug CAN connector from your Bafang LCD display/buttons.
And connect to K1 Flash.

When motor is compatible with selected firmware, download will start – RED LED is blinking. Takes up to 25 seconds (M620 up to 50 seconds).

Note 1: Do not disconnect CAN connector or power during firmware flashing! 
Note 2: If your motor rejects firmware  –  Firmware update procedure is ending and continue with Set Motor parameters – K1 Flash is going straight to blinking Green LED


4. Once firmware downloaded successfully you get BLUE steady light for 3 seconds, motor will restart and K1 Flash continues with Set Motor Parameters procedure – blinking Green LED

Colour LED descriptoion (v 1.4)
Green LED blinking – Set Configuration parameters – connect motor over CAN connector
Green LED steady – Configuration parameters set – you can unplug motor
 
Red LED steady – Force Flash ready – connect to motor over CAN connector and download will start, otherwise there is timeout 20 sec and continue with Set Configuration parameters.
Red LED blinking – firmware is downloading – do not disconnect! Takes up to 50s. 
 
Blue LED steady for 3 seconds – firmware download successful, motor will be restarted and automatically continue with Set Configuration parameters.
 
Green/Red blinking – Calibration function started – There is 5 seconds and calibration will start. 
!!! Chain must be down from chain ring! Otherwise unplug immediately power from K1 Flash to stop.
 
Notes and usefull tips
You can download into motor also different voltage firmware version. So be careful when selecting firmware file.
Example: Check numbers after the letter “C” :  MMG522C4814F802010.1-CR X10N.510.FC 2.0.bin –
Red – firmware voltage. Doesnt matter what motor hardware or sticker you have, matter what firmware voltage you select. Bafang controllers are taking any voltage up to 52V nominal.
Blue – max allowed DC current in Amps – how strong is motor
Green – kind of version number
 
 
This procedure can be used for a “bricked” motor. For example you lost power during firmware download or you accidentally disconnected CAN bus – motor wont turn on over your LCD/buttons.
 
 
M620 CAN –  Firmware v1.2 (1000W)  is supporting now also power adjustments! So you can set max power at each PAS level.
Firmware v12.3 (750W) is supporting all power adjustments. Including Assistance level % and Acceleration per each assist level.
 
Firmware v1.1.06 should be with lower hardcoded power  (3A, 6A, 12A, 20A, 30A)
 
 
M600 rev.B – Firmware v46.2 is supporting also power adjustments. Hence there is quite a long overrun and initial power kick.
 
 
M560 – Firmware v1.5 (25A, peak 1250W) from April 2024 seems pretty well – can not see any drawback or bug here. I do not recommend 30A versions.
 
 
Old M600 rev.A – Included experimental firmware bin file for old M600 without power limitation at low battery level (actually limitation starting at 10% battery SOC) 
– Included experimental firmware for old M600 with lower PAS1 power (150W max) – good for range. Throttle with max power assistance every time – doesn’t matter which PAS you have selected!
– Found a drawback (thanks to Andrzej beta tester 🙂 – there is wrong voltage measuring, but is usable. Showing me 2V less. Can not explain this, could be some voltage measuring calibration.
 
 

Rotor Position Calibration is important when you have replaced controller board. It is about timing between rotor position and phase currents.

 
If you change controller – your motor would seemingly work… But you would not get smooth start run, vibration at low rpms , high currents which turns into high temperature – effectivity is lower.
 
You should run rotor calibration after new controller was installed, when rotor was replaced or magnet replaced.
 
Calibration process takes up to 10 seconds. 
 
Important:
– Charge  battery at least to 50% and battery must be turned on (batteries with a button)
– Chain must be down from chainwheel!!!
– You can hold crank by hand during calibration to avoid turning and hitting objects around.
– For better calibration put also cranks down.
 
How to run calibration

1. Uncomment Calibration command in AutoSet.txt file on SD card. Looks like this. 

2. Insert SD card into K1 Flash (SD card pins facing USB-C connector)

3. Power up K1 Flash over USB-C – Green LED blinking

4. Connect to your motor over CAN connector – K1 Flash will set parameters and then there is 5 seconds to start Calibration (can be adjusted by number in seconds after the command). Green/Red is flashing.
 
5. Motor will jump in few steps, rotate and stop in few seconds – Green LED steady – Calibration completed, you can unplug CAN connector from the motor.
 

AutoSet.txt file – K1 Flash is searching for this file name in Root directory of SD card.

Old printed User manual.

List of firmwares on SD card:

Few firmwares for M510, M560, M620, M820.

Link to old K1 Flash page on Google Forms.

Package includes:
 
– K1 Flash device
– SD card with set of Bafang firmwares (including tuned K1 Racing versions) for motors and some firmwares for LCD (it is a bonus and can not be updated with K1 Flash).
– A Metal Pin for re-setting K1 Flash – possible simple USB update in the future to support also other types of motors.
– Visit card with QR code to this electronic User manual.
 
– Optional USB-C to USB-A cable
– Optional micro SD card to USB adapter – let us know if you need cable or SD card adapter
 
 
Warranty: 1 year
Device is not waterproof.
Dimensions: 46x26x14mm , 20cm cable
Every piece is hand build and tested on a motor before shipping.
 

Cost and Shipping:
K1 Flash Light starts at 110 Eur including shipping in EU.
Shipping over National Post with tracking – so far 100% shipping success rate. Shipping outside of EU – add 5 Eur (higher shipping cost and also PayPal currency conversion fee).
Finland, Norway, Swiss  – no additional fees.

 

Payment options:
– PayPal transfer – we will send you a PayPal request. 
– Bank SEPA transfer
– Bitcoin transfer – 1K1eavzyw2MAKD91s1jUr7mSYLcZA36GuL

 
 
 
 
!!!
Operation of modified electric bike on public roads may be against the law in your country. K1 BBR is determined for testing purpose only and seller is not responsible for any damage of property or health.
Using K1 BBR device may void the warranty of your e-bike.
 
Buyer is taking this in mind and consent by clicking SUBMIT button at the end of this order form. 
 

Order Form

This address will be used also for PayPal transfer request.
In case of troubles with post office / lost parcel.
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