Upgrade Wizard fails from 7.11.18 to 7.12.8 – Missing sugar_version.php and 65x_to__mysql.sql

Check out the following links:

  1. Upgrade from 7.11.12 to 7.12 does not work · Issue #9592 · salesagility/SuiteCRM · GitHub

  2. Unable to upgrade to 7.11.1 - #5 by chamullo

  3. Steps to Upgrade SuiteCRM 7.11.13 to 7.14.6

  4. How to upgrade your SuiteCRM installation - PlotHost

  5. Upgrade from 7.11.18 to 7.11.22 fails and breaks the frontend and login!

  6. 7.11.10 to 7.11.12 upgrade wizard immediate 500 Error - #16 by dsoden