SG210 SFOS flash to UTM9

Question

Previous Firewall Model:ASG220 Firemware Version:9.509-3 Pattern:183205 Staff size: Less than 10. Hence we dont need SFOS and i wish to continue using UTM9 which doesn't requires me to manually migrate all the settings. New Firewall Model:SG210 Came with SFOS installed. I've managed to flash to firmware UTM9 version:9.510-5.1.ISO From this website https://www.sophos.com/en-us/support/utm-downloads.aspx 
 
 After installation, i got this issue after i uploaded the previous firewall model to the new firewall that's downgraded to UTM9 version:9.510. It's currently locked and preventing me from logging into the firewall without a license. I was provided a temp license by the vendor. Anyone have any idea in this aspect ?

JosefBergmann · Accepted Answer

Hi ywillie, 
 I suspect you restored the software appliance ISO (asg-9.510-5.1.iso) so you have now a "UTM software box" and got an evaluation license for a SG210 (check Field "Type = SG210" in license-file) which don't work on a "UTM software box". 
 Use the ISO for the hardware appliance (ssi-9.510-5.1.iso), then you get the original SG210 firmware and can use any license for a SG210. 
 Other option is, you stay with the "UTM software" firmware and ask your sophos partner for a "UTM software" evaluation license. Background, the software licenses for 10 or 25 users are finally cheaper then an license for a real SG210.