One of customers who bought a MB SD C4 device from us.
But the software compatible with SD C4 is not from us.
When he finished the installation and connected with his models W204.It happened to be locked.
He was sad with the device and dont know how to do it.
After sending email to us with the error message, and according to our engineers’experience. The device must be sent back to repair.
Here is the error message to show the device is locked
Once getting this problem, we can ask factory for repairing. But even if it is repaired well,also can not be used. Because our device only compatible with our software. Or the software from China.
So pls make sure the device and the software are from one supplier.