1. Put the VVDI BE key Pro improved version PCB into the case.
2. Cover the bottom case.
3. Insert the battery and cover the case.
4. Push the metal strips on both sides into the right position.
5.Here rearmetal button.
6.Put into the small key and start button.
If you want to disassemble the case, please do it from the last step to the first step.
Note: If the rear metal component is firstly assembled, then the metal strips on both sides won’t be able to put into the right position.