R6 / DS-2CD2622FWD-IS / V5.5.53 / connection by HIK protocol

[ruszok]

Hi guy's!

What do you think - I have 2 cameras DS-2CD2622FWD-IS 5.5.0 at sticker - if I try to downgrade to 5.3.8 it have IP 192.168.1.64 but haven't seen in SADPTool so I can't activate. Fake 5.5.0 (5.4.5) works little unstable. I can't downgrade lower than oryginally firmware?

Maybe You know what they change in firmware >5.3.8 that my NVR DS-9516NI-S can't connect by HIK protocol. The only possibility to connect is ONVIF but... By ONVIF NVR see only one stream.

Or maybe You now how change codec/coder (maybe prepare new compliation of firmware) to the lower version. In workin cameras coder is less or equal 7.0. This two have V7.3 build 180409.

In NVR I see only offline status (without reason) - maybe by telnet I can see something more? I can login by telnet but what next?

Any ideas?

EDIT:
I think is codec version problem:
[root@dvrdvs /] # getHardInfo
Start at 2019-03-12 12:00:49
Serial NO :1---U
V1.3.5 build 130619
KernelVersion: V2.6.22 build 180205
dspSoftVersion: V5.0 build -300101
codecVersion: V5.0 build 080808
hardwareVersion = 0xd800
encodeChans = 0
decodeChans = 16
alarmInNums = 16
alarmOutNums = 4
ataCtrlNums = 2
flashsize = 0x800000
ramSize = 0x10000000
networksNums = 1
language = 1
devTypeS-9516NI-S
OEMZ20---_62