Difference between 2 these versions?

[helenblog]

Hello,

I would to know about 2 these version

vB 4.2.0 patch level 4
and
vB 4.2.2 patch level 3
in member area

If I am using vb 4.2.0 then I should upgrade to vB 4.2.0 patch level 4 or vB 4.2.2 patch level 3 ??

[ForceHSS]

Upgrade to 4.2.3 as there are fixes in that you will need that 4.2.2 does not have

[cellarius]

You can only apply the patch that goes with your forum version. A Patch level will not upgrade the version of your forum.

But do as Force HSS suggested - upgrade to 4.2.3 to be safe.