I do not know of MRV2.12 as an official release.
The update to one of the later versions (series 2.XX) will render the CAM unable to be updated using a laptop.
Programming any of the 'hybrid' MRB/MRV versions will usually lock up the CAM when trying to access the N2 channels
Using a CAS3 interface incorrectly , may lead to the removal of identity part (Zylig ?) of the CAM and can possibly damage it.
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