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TaCZ Pack UpgraderMinecraft mod for 1.21.1

Only required on unofficial TaCZ 1.21.1

newest supported release 1.21.1
Latest version
2.1.3
Minecraft
1.21.1
Java
Java 21+
Loader
NeoForge
Licence
LGPL-3.0-or-later
Downloads
121.1k
Updated
4 mo ago
Available on
Modrinth
Space NodeOur hosting

Host TaCZ Pack Upgrader servers

One click and TaCZ Pack Upgrader is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version TaCZ Pack Upgrader declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From TaCZ Pack Upgrader’s own host. Nothing is re-hosted here.

Most recently published release

2.1.3release7 Jul 2026

tacz-pack-upgrader-2.1.3.jar · 1.6 MB · for 1.21.1 · NeoForge

Download this release
a89c832c729b…
Older versions4
  • 2.1.230 Jun 20261.21.126 KB3.3k downloads6bd872d4029f…Get
  • 2.1.19 May 20261.21.16.4 MB43.2k downloadsd35622bb6a7f…Get
  • 2.1.08 May 20261.21.16.4 MB981 downloadse8dd8e2f6922…Get
  • 2.0.025 Sept 20251.21.16.8 MB57.1k downloadsc3bb3ccc333b…Get

Frequently asked

Does TaCZ Pack Upgrader work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version TaCZ Pack Upgrader declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which platform or loader does TaCZ Pack Upgrader support?

NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for TaCZ Pack Upgrader?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is TaCZ Pack Upgrader under?

LGPL-3.0-or-later, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install TaCZ Pack Upgrader?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download TaCZ Pack Upgrader safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

GeckoLibA 3D animation library for entities, blocks, items, armor, and more!BookshelfAn open source library for other mods!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Details from Modrinth, where the author last updated it on 7 Jul 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .