//3[subgateAP] WSG-1200C_v1.0.4_b85_Release Note(jp).pdf 2019-12-02 //2[subgateAP] system.wsg-1200c.v1.0.4.b85.encrypted 2019-11-28 //1[subgateAP] system.wsg-1200c.v1.0.0.b75.zip 2019-07-16