[tbellik]

Originally Posted by MarkFL

Your installed products/plugins will not be overwritten or deleted, and any customized templates will also not be overwritten. You will simply be warned that they may be out of date. I left my customized templates as they were with no bad effects.

With vB 4.2.5, you will no longer have the option to use cookie based thread read marking, but the database marking is vastly superior in my opinion and I was using it for years anyway.

Upgrading from 4.2.3 to 4.2.5 should go smoothly. Of course, be sure to backup your site first.

Full backup or sql backup is enough for me ?
Thanks for your advance.

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Also when I start upgrade, the php version is important ?

My php version is 5.4 now.

Which version should I choose??