This guide helps you resolve the most common connection issues between your BitBox02 and MyEtherWallet (MEW).
You will learn how to:
- Identify and resolve connection errors
- Ensure your device and software are up to date
- Restore a stable connection with MyEtherWallet
For additional resources, visit the MyEtherWallet Help Center.
Important security notice
During this process, you will never be asked for your recovery words.
If any website or application requests them, stop immediately — this is a phishing attempt.
Start with these simple checks
Before diving into specific errors, follow these steps in order.
1. Make sure you are using the correct environment
- Open MyEtherWallet in your browser.
- Make sure you are using the desktop version.
- Do not use a mobile phone or mobile app.
💡 Info
The BitBox02 is only supported with the desktop web version of MyEtherWallet.
Mobile devices and apps are not supported.
2. Check if your BitBox02 is recognized by your system
- Connect your BitBox02 to your computer.
- Check if your operating system detects the device.
- If it is not recognized, follow this guide:
→ Check whether your system detects the BitBox02
⚠️ Warning
If your device is not recognized by your operating system, MyEtherWallet will not be able to connect to it.
3. Check your BitBoxApp and firmware
- Disconnect your BitBox02 and close MyEtherWallet.
-
Then follow our guide to update the firmware as described here:
→ Update the BitBox02 firmware
💡 Info
Keeping your BitBoxApp and firmware up to date ensures compatibility with MyEtherWallet and prevents most connection issues.
4. Reconnect your BitBox02 and repeat the connection flow
- Close the BitBoxApp.
- Disconnect your BitBox02.
- Follow the connection steps again using our guide:
→ How to connect your BitBox02 to MyEtherWallet
💡 Info
The BitBox02 can only communicate with one application at a time.
Make sure the BitBoxApp is closed before using MyEtherWallet.
5. Perform a hard refresh (if issues persist)
If the connection still fails:
- Open MyEtherWallet in your browser.
- Perform a hard refresh:
- Windows/Linux:
Ctrl + F5 - macOS:
Cmd + Shift + R
- Windows/Linux:
💡 Info
A hard refresh clears cached data that can interfere with the connection.
Common error messages and solutions
Use this table to quickly identify and resolve common issues.
| Error message | Solution |
|---|---|
| BitBoxBridge not found | Follow our dedicated BitBoxBridge troubleshooting guide. |
| Your BitBox02 is busy | Close all other wallet apps (e.g., Electrum, Rabby, BitBoxApp). |
| Unlock BitBox02 | Enter your device password on the BitBox02. |
| Pairing rejected on device | Reconnect and confirm pairing on the device. |
| Action aborted by user | Retry and confirm the action on the device. |
| Your BitBox02 is not initialised | Set up your device using the BitBoxApp. |
| Please upgrade to the newest firmware | Update via the BitBoxApp. |
| Trying to connect from a non-whitelisted origin | Verify you are on the official MEW website. |
| Expected exactly one BitBox02 | Ensure only one device is connected. |
| Device attestation failed | Reconnect the device and try again. |
| Unsupported BitBox device | Only BitBox02 Multi edition is supported. |
💡 Info
Issues related to the BitBoxBridge are handled in a separate troubleshooting article:
→ [BitBoxBridge troubleshooting guide] (to be added)
How to fix issues with Brave browser
The Brave browser uses built-in protection (Shields) that can block the connection.
Disable Shields for MyEtherWallet
- Open: https://www.myetherwallet.com/
- Click the lion icon in the address bar.
- Turn Shields DOWN for this site.
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- Reload the page automatically and test again.
Additional troubleshooting tips
If the issue persists:
- Try a different USB port
- Try a different USB cable
- Restart your computer
- Test another browser (Chrome recommended)
- Disable VPNs or firewalls temporarily
FAQ
Why is my BitBox02 not detected in MyEtherWallet?
Most commonly:
- The BitBoxApp is still running
- Your system does not recognize the BitBox02
- The BitBoxBridge is not working properly
- Your firmware or app is outdated
Can I use MyEtherWallet with my phone and BitBox02?
No. The BitBox02 only works with the desktop web version of MyEtherWallet.
Mobile devices and apps are not supported.
Do I need the BitBoxApp open when using MyEtherWallet?
No. The BitBoxApp must be closed, otherwise MyEtherWallet cannot access the device.
What should I do if I see a BitBoxBridge error?
Follow the dedicated BitBoxBridge troubleshooting guide:
→ [BitBoxBridge troubleshooting guide] (to be added)
Is it safe to connect my BitBox02 to MyEtherWallet?
Yes, as long as you use the official website:
→
Where can I find more help for MyEtherWallet?
Visit the official MyEtherWallet Help Center for additional guides and troubleshooting.