Cisco SPA 525G2 Support with v18 of 3cx

[bgarv7]

Hello everyone,

After countless emails and contacts with over 8 partners, i am unable to configure the Cisco SPA525G2. My problem is the firmware that ive uploaded (according to https://www.3cx.com/sip-phones/cisco-spa/) does not detect it. Ive installed v15 of 3cx but couldnt connect to their activation server.

Had another server that was successfully able to read the firmware files, but thats long gone.

phone firmware has been updated and downgraded, still no luck

 

[bgarv7]

I have found a solution to it. Just downgraded from v18 update 5 to v18 update 3

 

[JosIPVG]

For your information considering you willingly downgraded, this is the mail 3cx has sent all users ..

3CX will be updating the SSL certificates which are required to activate the PBX, and allow secure connections between your customers’ installation and our activation server. These certificates expire every year and are due to be replaced on the 1st December.
In order for customer systems to continue to operate without any issues, it is imperative you upgrade your customers to v18 Update 5by 30th November 2022.
Upgrading to Update 5 is important for your customers to remain able to (re-)activate and refresh license key(s) information.
We will also be emailing the end users urging them to update prior to 30th November.