Re: Upgrading from 6.2 to a version that supports PHP 5.3.17
Hi!
You can upgrade to 6.7, as the 6.x LTS series is supported until May 2014.
Otherwise, go for 9.x LTS because 8.x is no longer supported.
See Version Lifecycle for details.
Best regards,
M ;-)
Related: 1-click installers and Upgrade