how to go back to version 1.1.50.39 firmware from version 2.0.0.1 Insight-ready firmware

waadaa,

Welcome to the community! :) 

did someone has been able to go back to firmware version image 1.1.50.39 on a GS724TPv2 that has been upgraded to version 2.0.0.2 ?

There is no GS724Tv2 firmware v2.0.0.2.  I believe you referring to firmware v2.0.1.2.  As far as I have checked, there is no issue logged for the GS724TPv2 with firmware v2.0.1.2 as per you have described in your initial post. 

My company bought a GS724TPv2 managed switch for a PoC and everything was fine with version  1.1.50.39 and below.

Unfortunately, the switch has been upgraded to Now with 2.0.0.1 firmware, it relentlessly generate SSDP traffic on one port, which is connected to a firewall's interface.  Naturally, the firewall is blocking + dropping such traffic. Security team (managing the Sec Infrastructure and firewalls) are on my back because of all alerts and logs filling that switch is generating :-( The switch has been relocated to a small office LAN segment for the time being. It is less than a year old.

There might be other changes made besides the firmware update that might trigger the problem such as change in the settings of the GS724TPv2 or additional devices connected within the existing network.  

It would be best that you download the tech support file of the GS724TPv2.  Then, open a support ticket with NETGEAR Support here at anytime in order for the tech support file to be analyzed why the GS724TPv2 generated SSDP traffic on one port that is connected to a firewall's interface.  

Kindly read pages 387-388 of the GS724Tv2 user manual here on how to download the tech support file. 

Regards,

DaneA
NETGEAR Community Team