I am currently using FOG 1.5.10.1903 and have about 200 computers on my network, already registered in FOG, with a lot of image. I would like to upgrade to FOG 1.6.

I also now have my own certificate for secure boot, which I manually enrolled to all computers (before this option appeared in FOG) and I had fog files signed with it and a working secure boot.

/root/SB_key/FOG_SB.crt
/root/SB_key/FOG_SB.der
/root/SB_key/FOG_SB.key

What would you recommend? Should I perform an in-place upgrade from 1.5 to 1.6, or would it be better to do a clean installation and migrate database and images to the new server?

Thanks for your advice.