You can revert to LW 4.18.8 whenever you like, whether you're a Pro user (providing your Pro benefits are still current) or basic user.

If you use basic: Get LimeWire for Your Platform - Lime Wire

If you use Pro, use your Pro download link & then on the right side of the page, you'll see Get LW Pro 4.18... click on that link.

LW 4.18.8 has some problems when it comes to resuming incomplete downloads from other versions. If you have incomplete downoads from LW 5 that you'd like to resume in an earlier version of LW, please let us know before you get rid of your LW 5 & we can give you more info about that & suggest a better LW version to use