CurseForge · Minecraft mod
FlashFreeze
Preserve unknown blocks, entities and items
Quick answer
Which FlashFreeze release should I use?
FlashFreeze 0.3.4+1.20.1 (Fabric) targets 1.20.1 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is FlashFreeze required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does FlashFreeze 0.3.4+1.20.1 (Fabric) need?
0.3.4+1.20.1 (Fabric). Change the file and its required mods may change too.
Install Fabric API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add FlashFreeze without breaking your instance.
Built for FlashFreeze 0.3.4+1.20.1 (Fabric). Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 0.3.4+1.20.1 (Fabric). It targets 1.20.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside 0.3.4+1.20.1 (Fabric). It opens that exact file at the source.
About this project
What does FlashFreeze add?
FlashFreeze
FlashFreeze lets you remove and add content- adding mods without dropping any blocks, entities or items.
You can use it to migrate to a newer version of Minecraft without waiting for That One Last Mod, or turn content mods on and off one by one to nail down that pesky bug.
Usage

All unknown blocks, items and entities are presented as missing textures or as Source Engine ERROR models.
Once you turn the content mods back on, all the FlashFrozen™ content is defrosted 100% fresh!
Project description from CurseForge.
Pick your setup
FlashFreeze by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.5
2 loader builds1.21.1
2 loader builds1.20.1
2 loader builds1.19
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
FlashFreeze versions and loaders
0.3.4+1.20.1 (Fabric)
flashfreeze-0.3.4+1.20.1.jar
30 May 2025
0.4.1+1.21.5 (NeoForge)
flashfreeze-neoforge-0.4.1+1.21.5.jar
27 May 2025
0.4.1+1.21.5 (Fabric)
flashfreeze-fabric-0.4.1+1.21.5.jar
27 May 2025
0.4.1+1.21.1 (NeoForge)
flashfreeze-neoforge-0.4.1+1.21.1.jar
24 Apr 2025
0.4.1+1.21.1 (Fabric)
flashfreeze-fabric-0.4.1+1.21.1.jar
24 Apr 2025
0.4.0+1.21.1 (Fabric)
flashfreeze-0.4.0+1.21.1.jar
28 Feb 2025
0.3.3+1.20.1 (Fabric)
flashfreeze-0.3.3+1.20.1.jar
1 Jun 2024
0.3.2+1.19 (Fabric)
flashfreeze-0.3.2+1.19.jar
8 Aug 2022
0.3.1+1.19 (Fabric)
flashfreeze-0.3.1+1.19.jar
6 Aug 2022
0.3.0+1.19 (Fabric)
flashfreeze-0.3.0+1.19.jar
5 Aug 2022
Looking for an older file? The official CurseForge project page is in Resources.