Hello, the customized equipment is the product that the manufacturer separately produces according to the requirements put forward by the operator. In the same model, the difference between the custom machine and the ordinary machine is mainly due to the difference in software.
There are two ways to change it:
One is to find a way to get the firmware of this product (equivalent to the operating system of the computer) and update the device; this is risky because the ONT used together with the OLT at the central site. The version must match the model. If the version is incorrect, it cannot work.
The other is to apply to the operator to unlock all permissions.