Dahua NVR2104-P-4KS2 Firmware please help

[ErwinB]

Hello,
I need firmware for my NVR. Hopefully someone can help me. I have problems that 2 chinese cameras not work on the NVR. Maybe have some one a solution.
I already try some firmwares but no result.
next version already try:
3.216.0000000.0
3.215.0000000.1
3.215.0000000.0

Thank you very much for respown!

Kind regards,
Erwin