patton 4552 firmware

[openlansrl]

Hallo, we are using two patton 4552. One is active since 2009 and the other is new, both hw version 4.1
Which firmware should I use? The version of the firmware that is supported "Smartware 5.3 Build Series 2009-01-15" (as written here: http://www.3cx.com/voip-gateways/patton-sn4554.html is not available for download: http://upgrades.patton.com/list.asp?model=SmartNode%204552&flag=1

May I use the latest 5.5?

 

[mfm]

Hi,
I have not tested it in house, but there should be no reason why it should not work. Please advise, ill test it out on Monday.

 

[openlansrl]

Thanks, we are using the latest 5.5 on one patton and the 5.4 on the other and it's working fine.