How do you reset the chair when all the lights are flashing?

Hand control is locked. turn chair on push joy stick forward til it beeps then pull it back until it beeps then put it in neutral ( joy stick in the center) then it should be unlocked.
LOCKING/UNLOCKING THE VSI
The VSI has a feature that enables you to lock your power chair to prevent
unauthorized use.
To lock the VSI:
1. With the VSI powered on, press and hold the on/off key. After one (1)
second, the VSI should beep.
2. Release the on/off key.
3. Push the joystick to the full forward position until the VSI beeps.
4. Pull the joystick to the full rearward position until the VSI beeps.
5. Release the joystick. There should be a long beep.
6. The VSI is now locked.
To unlock the VSI:
1. Press the on/off key and power on the VSI. The maximum speed/profile
indicator should ripple side to side.