Sorry @pepeEL, I may not help you with FW for camera DS-2CD2035, but I can share may experience with DS-KH8301-WT intercom indoor monitor based on H5 platform.
1. I downloaded firmware VIS_11_H5_INDOOR_EN_STD_V1.5.0_180622 from www.hikvisioneurope.com/portal and tried to unpack it by using the...