https://community.sophos.com/kb/en-us/124585
The KB from Sophos states- you can do a backup-restore from a lower firmware to an equal or higher firmware but not the other way around.
Yet I have heard you need to have the same version in order for the back to work correctly?
What’s more odd is on this same page you can download the List of Appliances for each Series and then use the web page to see what back ups are supported to what models. According to this a backup from a SG 230 is capable of working to a XG 230 which honestly would be awesome but I just don’t see how that is possible given the changes between to the two OS’s and how the firewall backup would essentially fill in the blanks so to speak.
I only find this odd because I was told by Sophos Support on the phone and have read in multiple places that there is no way to migrate to XG from SG, but this would imply you can simply restore from a back up.
Basically the List of Appliances for each Series shows all the SG’s under SGXXP and all the XG’s under XGXXP, when you select these two you get this-
Backup Restore From SGXXP Appliance to XGXXP Appliance is Not Supported for XG85, XG105, XG115, XG125 and XG135 but it is Supported for XG210, XG230, XG310, XG330, XG430, XG450, XG550, XG650 and XG750
There is also a matrix for extended interfaces and which will work and which will not depending on your port count I am assuming.
Maybe I am getting this all wrong but I thought I would throw it out there to understand it better, especially for recovery practices.
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