Upgrade Guides for Licensing Review the list of migration recommendations each time you move to a new version. Licensing 6.00 upgrade guideThese topics describe product changes you must be aware of when upgrading to version 6.00.FLM 6.00 upgrade guideThese topics describe product changes you must be aware of when upgrading to version 6.00.Upgrade the FLM without reinstalling licensesInstall a new version of Four Js license manager 6.00 without reinstalling your existing licenses.