5. Update CTP185. Update CTP18
Please refer to: CTP18 firmware update.
6. Reset CTP186. Reset CTP18
After pairing, when you reset the CTP18 to the factory, the MeetingBoard will be reset to the factory together.
On the right side of the CTP18 screen, tap > SettingsSettings > SystemSystem (Default admin password: 0000) > reset to factoryreset to factory.