Once you have the correct driver file (e.g., Setup.exe or the INF folder), follow these steps precisely.
A warning popped up, bright and red: “Windows cannot verify the publisher of this driver software.”
Open Windows Security → Device Security → Core Isolation → Turn off “Memory Integrity.” Restart. Then reinstall the 8811CU driver.
Once you have the correct driver file (e.g., Setup.exe or the INF folder), follow these steps precisely.
A warning popped up, bright and red: “Windows cannot verify the publisher of this driver software.”
Open Windows Security → Device Security → Core Isolation → Turn off “Memory Integrity.” Restart. Then reinstall the 8811CU driver.
About controller:
250W/350W controller:
Motor style: Brushless
Rated voltage:24V 36V 48V
Rated power: 250W 350W
Current: 15±1A
Controller Size: 86mm*53mm*30mm
Weight: 85g
Use for: Ebike, E-scooter, Mountain Bike etc
500W controller:
Motor style: Brushless
Rated voltage: 24V 36V 48V
Rated power: 500W
Current: 25A±1A
Controller Size: 120mm*50mm*30mm (4.76in*1.96in*1.18in)
Weight: 250g
Use for: Ebike, E-scooter, Mountain Bike etc












