How do you use older versions of modpacks?

[RedstoneLab]

I really need help because i was gonna make a server so me and my friend can play together. The only problem is the modpack server file only works for an older version of the modpack. Any help is appreciated! :)

[RedstoneLab]

Help!

[Neowulf]

Ask the modpack creator to update the server download. Every custom pack page has a conversation tab.

Or do it yourself. If the MC versions are the same it's as simple as replacing the server mods (and coremods if applicable) folder with the one from your client install and removing any strictly UI mods (minimap, damage indicators, ect...).

Also, have a bit of patience. I'm surprised you even play a slow game like MC if you can't wait more than a minute before reminding people you need help.