Led color codes
Simucube 2 has either a status LED on the rear of the unit (revision 1 and Ultimate), or the led illuminates the white POWER IN connector (evision 2 Sport and Pro units).
Normal operation
| Led colour |
Function |
| Blue |
Normal operating mode |
| Blue slowly blinking |
Standby mode |
| Blue with two Red blinks |
High Torque Mode is enabled |
| Red |
Torque clipping / saturation is ongoing |
| Green |
Wheel has turned over bumpstop limit for any reason |
Firmware update
| Led colour |
Function |
| Yellow |
Flash erase failed before uploading new flash data. |
| Green blinking |
Data is being received from PC. |
| Red blinking (after a firmware update attempt) |
Received firmware is not compatible with this Simucube 2 product |
| Green |
Received firmware is compatible with this Simucube 2 product |
| Blue |
Firmware is correct and valid, but device was told to go to Firmware Upgrade mode by the PC. |
| Blue blinking |
Firmware was invalid / corrupt and the device stayed in Firmware Upgrade mode after power-on. |
| Red blinking (at startup) |
The device was forced to go to firmware update mode by a special service dongle. |