How do I install Client Update Suppressor [CUS]?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on Modrinth — not every file is mirrored on our own servers.

What Minecraft version does Client Update Suppressor [CUS] work with?

The listing gives Minecraft 1.21.8, 1.21.9. This is the version stated by the author or source site, not something we verified ourselves.

Home›Java›Mods›Client Update Suppressor [CUS]

ModsJava

Client Update Suppressor [CUS]

by Villagerzock · on Modrinth

Allows you to Suppress Block Updates on Client Side for Online Server with Plugins like Nexo, Itemsadder and Oraxen

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for Fabric only.

Minecraft 1.21.8–1.21.9Newest
Minecraft 1.21.7
Minecraft 1.21.6
Minecraft 1.21.5
Minecraft 1.21.4

⬇ Download for 1.21.8–1.21.9 ⬇ Download for 1.21.7 ⬇ Download for 1.21.6 ⬇ Download for 1.21.5 ⬇ Download for 1.21.4

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Client Update Suppressor [CUS]

This mod Suppresses Blockupdates on the Client-Side to make a Smoother Experience on Servers with Blockstate Replacements for Custom Blocks with the use of Plugins like Nexo, Itemsadder and Oraxen

To use it just Install it and join on Servers with Custom Blocks and from now on the flickering when breaking custom blocks is gone.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.8, 1.21.9
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.

Verified by MCModsHub

Ships as cus-1.1-21.8.jar — drop this file into the mods folder
Download size: 18 KB
Download link checked 31 Aug 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.21