NIU V35 (MQi GT) ECU Software
Update via H1 Guide

To manually update the NIU V35 (MQi GT scooters) ECU software, follow the directions
provided below. If you experience trouble during the update procedure, please reach out to
Genuine Scooters for assistance.

1. On your computer, download the V35 software files provided by Genuine Scooters.
Steps 2 and 3 will be used to help you verify the software files have been updated by the
end of the process. When the process is complete, your final software versions (for
V35 ECUs) will be: VLA01B30 and VLQ13V07 (…V08).
2. With the scooter turned OFF and at least (1) lithium-ion battery connected, begin by
opening the seat of the scooter to access the under-seat charging port. Connect the H1
controller to the scooter. Turn on the H1 controller and tap the V35_Info icon.

3. Allow the controller to access the ECU information. When the screen loads, note the
VCU_SoftVer:, highlighted here in red. We suggest writing down this ECU Software
Version for future reference. This information will be used at the end of the process to
verify the correct files have been updated. After noting this version, tap the RETURN key
below the H1 D-pad.

VLA01B25

4. Back on your computer, open the V35LTE firmware folder you downloaded in Step 1.
Unlike the V3LTE update, only two files are required to install, regardless of current
software version. These two files are separated into MCU and Module subfolders.

5. To load the necessary files onto the H1, ensure the Micro-SD card that came with the H1
controller is installed in the controller – the card slot can be found on the top face of the
controller under the rubber gasket. Next, using the USB A-to-Micro USB cable that
came with the controller, plug the computer into your computer. Turn on the H1
controller, and using the D-pad, tap the right arrow until you locate the USB icon on the
touch screen and tap it.

6. The H1 should now connect with your computer. Find the H1 drive on your computer
and copy/paste all necessary files downloaded earlier to this drive. (Make sure to copy
both files ECCV08 & ECUB30 – one from the Module folder and one from the MCU folder
to the H1)

2. Copy &
paste both
files to H1
drive
1. Find H1 drive on computer

7. With the files loaded onto the H1 controller, disconnect the H1 from your computer and
return to the scooter. Once again connect the H1 controller to the scooter at the underseat charging point. Ensure the scooter is in the OFF position. Using the right arrow,
navigate to the V2_ECU_UP icon and tap it. On the following screen, tap it when
prompted.

8. When the screen loads showing the files available for installation, tap, the first file in the
required order. (PLEASE NOTE: The number of files required and their position on the
screen may be different for each individual scooter and may not match this guide
exactly.) Begin by tapping the first required file. The screen will indicate it has
successfully opened the .BIN file and installation will begin.

THIS SCREEN WILL SHOW THE
PROCESS HAS INITIATED. ALLOW
TO FULLY INSTALL.

9. The process for each file install is between 2 and 5 minutes. After the process for an
individual file install is complete, a message will appear on the display indicating the file
has been successfully installed (noted here in green).

10. Next, tap the return key to navigate back to the H1 home screen. Then, tap V3_ECU.
Allow the H1 to load and a string of text should appear. Locate the ECU_SoftVer:,

highlighted here in red. We suggest writing down this ECU Software Version for future
reference. This information will be used at the end of the process to verify the correct
files have been updated. After noting this version, tap the RETURN key below the H1 Dpad.

11. After noting the ECU software version, tap the Return button to show the H1 home
screen again. Now, locate the Module_Up icon and tap it.

12. Once you have confirmed the scooter has the current software, the process is complete.
You may disconnect the H1 controller from the scooter and return the scooter to the
customer. Follow the onscreen instructions to tap the screen and then select the
ECCV08 file.

13. Similar to steps 8 and 9, a screen will display the progress of the install. Once the screen
indicates the process has been successfully completed, you may tap the return key to
return to the H1 home screen.
14. Repeat Step 3 to verify the software version now reads: VLA01B30. Then, repeat Step 10
and verify the software version now reads: VLQ13V07 or VLQ13V08. This completes the
update process.

Please note: if at any time a file does not successfully complete install or the H1
cannot successfully display the ECU software version, turn off the H1, disconnect from

the scooter, and then restart that specific step again. If the problem persists, please
contact Genuine Scooters.