ok, I came here looking for some information before I get going in the wrong direction. I have the same problem, but with a rebrand of the same camera. My situation came about after I chose to flash the PTZ firmware file. I downloaded the file from Dahua and attempted to flash the firmware. The update failed. Ever since then I do not have a section that says PTZ firmware. I lost any and all Pan and tilt, I believe I have zoom. I then went to the Vikylin website to use their version of the firmware, and it was the only camera that did not have a link for firmware. I contacted their support team and afte about an hour and them asking me why I needed it, they emailed me a firmware package which was an upgrade, even though it said there was not one, the number is higher than the current one listed at Dahua, but there is still not a PTZ firmwarein the package. So i am still stuck, but had to step away from it because, my brain needed a break. My camera model is VD-SD4825X, and the new firmware was considerably bigger at 380 MB, its is labeled 2.6.01.05.68491 General_SD-Taurus_MultiLang_PN_Stream3-Normal_V3.200.0000003.0.R.230325. I just started setting up the camera and have never run a tour, pattern, or any thing other than setting abut 30 presets. the file i initially tried to flash was labeled General_SD5AXXXG-HN_MCU_V2.401.0000001.42.R.220811.bin. The camera did take the new one from Vikylin, it added a maintenance center section and a few other things like face finding, but I still don't have pan or tilt or a section that says PTZ firmware.