some commentary:
/install/install.php will dump you right in to the install without performing and of the pre-check items.
/install/upgrade.php will dump you right in to the upgrade script without performing any of the pre-check items.
/install/index.php will perform and display the pre-checks and will take you to the correct path based on those checks
* If you visit install.php or upgrade.php directly, and the process is not correct for you, then you will be told that its not correct, but you will not get a summery of your current environment .
* If you visit index.php, you will get a summary of your current environment before proceeding to what is correct for you.
This is new as of version 7.6.2 (2018-09-18), I do believe that the text of UBBCentral's version upgrade docs were neglected to reflect that installer/upgrader improvement.
I am updating those online right now.
Thank you for pointing this out to us
edit: fixed
again, thank you
