Trying to upgrade from 1 Ent directly to 7.8 Ent or later.
As per our extensive experience, there is no direct jump available from 7.1 ENT to 7.8 ENT or later. The upgrade can be done in multiple steps. We usually calculate the minimum possible jumps before doing the final upgrade. There are several things that you need to keep in mind when considering an upgrade, for example:
In case you need any help regarding the upgrade, you can email us at firstname.lastname@example.org and we'll be more than happy to guide you.