Export firmware from device to another device

Hi,

my company use sophos xg105 on many sites, all sophos devices use the SFOS 17.0.6 MR-6.

Recently we added a new sophos xg105 with the SFOS 17.5.5 to our network, but we got lot of ipsec issues (i fixed by using SSL VPN for this moment)

i'm asking to export the SFOS 17.0.6 MR-6 from a sophos device to the new sophos device.

thanks