YK_HZXM_NBD88X16S-KL-V3_V4.03.R11.Nat.dss.OnvifC.202311221 is a working firmware for my PS-Link PS-i3104XS YK_HZXM_NBD88X16S-KL-V3_V4.03.R11.Nat.dss.OnvifC.20250325 is a currently latest one, and has a big problem, a built-in PoE-switch cease to work, it powers cameras, but nvr cannot see them.