Greetings . . .

Looking for a rough cut strategy on getting an installation current on maintenance. We are running version 7.5.8 with php 5.5.22 in front of MySQL 5.6.50-90.

The changelog indicates that version 7.7.5 is compatible/tested with php 5.4 – 7.4. Is there a preferred php version to use during the upgrade process? To run steady state?

Is it advisable to jump from 7.5.8 to 7.7.5 directly or should an intermediate step be taken during the outage window? If so what version would we target as a stepping stone?

MySQL 5.6 is EOL. Is there a preferred version to target? Does it need to be in place prior to upgrading UBB?

Thanks in advance.