Can't seem to update mods in modpack

[Vamp2004]

So I've tried this before with several mods in the modpacks.. Updating the smaller mods that is placed in them :IE: Optifine. I will place the files into the jar folder but as soon as I load up the modpack again nothing is updated.

The main mod I want to update is Pixelmon. All parts of that mod that was posted has been updated from 1.5.1 to 1.6.2. Is there another way to update the mods or maybe something I'm doing wrong? Anything would help. Thank you.

[dwwojcik]

Did you remember to increment the version number? The launcher will only know to re-download your modpack's zip if you change the version from 1.0 to 1.0.1, for example, on the modpack's technicpack.net settings page.