Knowledge base
Firmware
Possible causes
- Software version mismatch between components
- Failed update / corrupted firmware
- Configuration error (wheel size, component identification)
Safe test steps
- Check component software versions with the manufacturer tool.
- Was there an update or part change before the fault?
Workshop reference values
- No general documented measurement value – manufacturer service documentation required.
Repair approach
- Software update/configuration at a dealer with the manufacturer tool.
Tools needed
- Manufacturer dealer diagnostic tool/software (if available)
Safety
- Do not disconnect the battery during an update.
Related verified fault codes
| Code | Meaning | Component | Reliability |
|---|---|---|---|
| Bosch 419 | Configuration error | Firmware | Per manufacturer documentation |
| Bosch 426 | Internal time-out error | Firmware | Per manufacturer documentation |
| Bosch 431 | Software version error | Firmware | Per manufacturer documentation |
| Bosch 450 | Internal software error | Firmware | Per manufacturer documentation |
| Bosch 531 | Configuration error | Firmware | Per manufacturer documentation |
| Bosch 580 | Software version error | Firmware | Per manufacturer documentation |
| Bosch 591 | Authentication error | Firmware | Per manufacturer documentation |
| Bosch 592 | Incompatible component | Firmware | Per manufacturer documentation |
| Bosch 593 | Configuration error | Firmware | Per manufacturer documentation |
| Bosch 656 | Battery software version fault | Firmware | Per manufacturer documentation |
| Shimano STEPS E013 | Abnormality in drive unit firmware | Firmware | Per manufacturer documentation |
| Shimano STEPS E033 | Current firmware cannot operate the system | Firmware | Per manufacturer documentation |
| Shimano STEPS E043 | Part of the cycle computer firmware may be corrupted | Firmware | Per manufacturer documentation |
| Xiaomi 35 | Serial number (VIN) error | Firmware | Widely published – may differ by model/firmware |
| Segway-Ninebot 35 | Serial number (VIN) error | Firmware | Widely published – may differ by model/firmware |