Cisco SPA504G Firmware Upgrade

[BABALUCHA]

Hello Everyone
I took over a customer and have setup 3cx Hosted Solution for them ,they have two CISCO SPA504G phone sets that they were using with previous provider and would like to use them with 3cx.So so far i have Factory Reset the phone successfully but can't seem to find a proper way to upgrade the firmware from 7.5.2b to 7.6.1 which is recomended by 3cx.
So far i tried the following way but no luck.
https://community.cisco.com/t5/voice-systems/help-me-upgrade-firmware-of-spa504g/td-p/3401456

https://community.cisco.com/t5/voice-systems/spa504g-phone-does-not-upgrade/td-p/3233134

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[leejor]

Is the issue, that you cannot get the firmware from Cisco, or that there is an error, of some sort, when you attempt the upgrade?

If the upgrade fails, what sort of message do you get?

 

[BABALUCHA]

Hello leejor
So when i tried to upgrade the message comes that phone will get upgraded and reboot ....but after a little while the phone just reboots and comes back with same old firmware

 

[CentrexJ]

This phone is only supported with 3CX on a local install or vpn connected install. No stun or sbc are officially supported.
you can make manual configuration on it to do both.
https://www.3cx.com/sip-phones/cisco-spa/

 

[BABALUCHA]

Hello CentrexJ.....you nailed it......i actually need it for remote location.....ok cool ........have you guys used them in manual configuration ?

 

[CentrexJ]

Hello CentrexJ.....you nailed it......i actually need it for remote location.....ok cool ........have you guys used them in manual configuration ?

I have taken ones that were provisioned locally and then when I migrated the customer to the cloud I manually edited a few settings on the phone. They worked OK manually configured over 3CX SBC but not 100%.

To manually configure the phone from scratch you are looking at a lot of work.

How many phones do they have? My customer ended up eventually moving to 100% Yealink after 6 months of using the Cisco phones. They were 70% Yealink at the point we moved them to cloud and I warned them that the Cisco phones won't work great so it wasn't a big surprise to them.

If they have a significant number of phones I would move them to a cloud host with vpn, or move the 3cx in-house.

 

[BABALUCHA]

Hello CentrexJ
well there are only two in total,so i wouldn't worry about it than.thanks for your time and effort.i was looking online these are quite cheap phones to get and some other guys like us are using them all the time ,......not sure what system they use in background....lol..

 

[ChrisC_3CX]

@alltech247
As these are indeed old eol devices I do recommend at least considering switching to a more recent device we support. Especially since you will not be able to keep the current devices in a 3CX Supported state due to having a remote 3CX PBX with no site-to-site VPN available.

Here is a list of all 3CX Supported IP Phones: https://www.3cx.com/sip-phones/

Note: Do make sure to also go through the device's guide to check for any limitations or requirements you should know a bout.