RTSP Feed does not work after update

[Mario_438407816917146]

I have 2 RLC-510A which I got only 2 days ago.
When I checked it has the below software and firmware,
IPC_523128M5MP
v3.0.0.0
v3.0.0.177_21012102
The RTSP feed that I was using for the last 3 days is,
rtsp://user:password@000.000.0.000:554/h264Preview_01_main
This has been working fine with no issues at all

I saw a reolink post about a new update for the RLC-510A which was v3.1.0.951_22041567
I downloaded the update and used the System-> maintenance option to update the firmware

once the camera updated the same RTSP link (rtsp://user:password@000.000.0.000:554/h264Preview_01_main) does not work

I reverted back to the original firmware v3.0.0.177_21012102
and the RTSP feed starts working once again

is it something I am doing wrong

[Reolink Fiona]

@mario_438407816917146 After the update, the network port is default off. If you want to use the RTSP stream, you need to go to the PC Client>>Network settings>>Advanced>>Network Ports to enable the RTSP ports. You can read this article for help, https://community.reolink.com/topic/3183/why-do-i-fail-to-access-the-camera-via-the-web-browser-or-connect-to-the-third-party-software-after-upgrading-my-smart-cameras-with-the-latest-firmware-v-3-1-0764-v-3-1-0804.