The Shimano STEPS E8000 system is widely recognized for its reliable and powerful performance in electric mountain bikes (eMTBs). As technology evolves, Shimano periodically releases firmware updates that can enhance performance, fix bugs, or adjust motor characteristics. However, some riders may experience issues with a firmware update and may prefer to downgrade to an earlier version, such as the E8000 4.10.1.
Downgrading firmware can help restore functionality or performance characteristics that you prefer, especially if a newer update is causing issues. Below are the steps you can follow to downgrade your Shimano E8000 motor to firmware version 4.10.1.
Before You Begin
- Ensure Compatibility: Make sure the firmware version you want to downgrade to (4.10.1) is compatible with your specific motor model.
- Backup Data: If possible, backup your bike settings and parameters using Shimano’s e-Tube Project software.
- Battery Level: Ensure that your battery is sufficiently charged to avoid interruptions during the process.
- Required Tools: You will need a compatible computer or smartphone, an e-Tube USB or Bluetooth device (depending on your setup), and the e-Tube Project software installed on your device.
Step-by-Step Guide to Downgrade Shimano E8000 Motor Firmware
1. Install e-Tube Project Software
If you haven’t already, download and install the Shimano e-Tube Project software on your computer or smartphone. This software is required for accessing your motor’s firmware and performing any updates or downgrades.
- For PC/Mac: Visit the official Shimano website, go to the ‘Support’ section, and download the e-Tube Project software.
- For Android/iOS: Download the Shimano e-Tube Project app from the Google Play Store or Apple App Store.
2. Connect Your Bike to e-Tube Project
- Use the Shimano e-Tube USB device to connect your bike to your computer, or use a Bluetooth adapter if you’re on a mobile device.
- Turn on your eMTB, and ensure it’s connected properly to the software. The software should detect your motor and display relevant information about the current firmware version.
3. Check Current Firmware Version
Within the e-Tube Project software, navigate to the “Firmware” section. Here, you can view the current version of your Shimano E8000 motor’s firmware. Ensure you’re on a version higher than 4.10.1 before proceeding.
4. Download the Desired Firmware Version (4.10.1)
To downgrade to version 4.10.1, you’ll need to download the firmware file. Shimano does not always make previous firmware versions readily available on their public website, so you may need to contact Shimano support for access to the 4.10.1 file. Alternatively, some bike shops with e-Tube Project access might be able to assist.
If you have access to the firmware file, load it into the e-Tube Project software, and prepare for installation.
5. Downgrade the Firmware
Once the 4.10.1 firmware file is loaded into the e-Tube software:
- Select the motor unit (typically labeled as “E8000” in the software).
- Choose the “Firmware Update” option. The software will present a prompt to downgrade to the selected version (4.10.1).
- Follow the on-screen instructions. During this process, avoid disconnecting your bike from the e-Tube software or turning off the power, as this could damage the motor or cause issues.
6. Verify Successful Downgrade
After the downgrade process is complete, the software will prompt you with a success message. Verify that the firmware has been downgraded to version 4.10.1 by checking the motor firmware version once again in the e-Tube Project software.
7. Test Your Bike
Take your eMTB for a test ride to ensure everything is functioning properly with the downgraded firmware. Pay attention to motor power, assist levels, and responsiveness, as this will confirm whether the downgrade has restored the previous behavior you were seeking.
Troubleshooting
- If the downgrade process fails or you encounter errors, ensure that the firmware file is not corrupted and that the connection between your bike and the e-Tube software is stable.
- If you can’t find the firmware version you need or have issues with the e-Tube software, contact Shimano support or visit your local bike shop for assistance.
Conclusion
Downgrading the Shimano E8000 motor to firmware version 4.10.1 can be a helpful solution if you experience issues with newer updates or if you prefer the riding characteristics of an earlier version. While the process may seem complex, following the steps above should allow you to safely and efficiently downgrade the motor’s firmware. Always remember to back up your settings and verify compatibility before proceeding.
If you are not comfortable performing the downgrade yourself, consider seeking assistance from a professional bike shop or Shimano dealer to ensure the process is done correctly.
