zd1200 10.1.2 upgrade to 10.2.1 then license gone
sos: i upgrade my zd1200 version to 10.1.2 form 9.13 last time , that was perfect , everything is ok . but this time , i upgrade version to 10.2.1 form 10.1.2 , the ap license was gone , and the supporting license was gone too , but according ...