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Soph Upgrade AddonsMinecraft mod for 1.21.1

Unofficial addon for Sophisticated Backpacks. Adds several useful upgrades.

client and servernewest supported release 1.21.1UtilityStorage
Latest version
0.9.2.1
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
LGPL-3.0-or-later
Downloads
31.5k
Updated
13 d ago
Available on
Modrinth
Space NodeOur hosting

Host Soph Upgrade Addons servers

One click and Soph Upgrade Addons is installed with the right loader, on hardware built for it.

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

Minecraft versions

Every version Soph Upgrade Addons declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From Soph Upgrade Addons’s own host. Nothing is re-hosted here.

Most recently published release

0.9.2.1release13 Oct 2026

SophUpgradeAddons-1.21.1-0.9.2.1.jar · 0.3 MB · for 1.21.1 · NeoForge

Download this release
c4bafb25c4f9…
Older versions11
  • 0.9.25 Oct 20261.20.10.3 MB105862a0c8a0…Get
  • 0.9.13 Oct 20261.21.10.3 MB0baa1b66ecc9…Get
  • 0.8.527 Aug 20261.20.10.2 MB1a90c57f200a…Get
  • 0.8.26 Jul 20261.20.10.2 MB4.0k downloads4b213de56a91…Get
  • 0.8.03 Jul 20261.20.10.2 MB142 downloads4f21859c5dcd…Get
  • 0.7.328 Jun 20261.20.10.2 MB142 downloads73e79000d5bf…Get
  • 0.7.226 Jun 20261.20.10.2 MB404 downloadsa7b81ee1828e…Get
  • 0.7.118 Jun 20261.20.10.2 MB277 downloadse6bb6c2d9d92…Get
  • 0.7.017 Jun 20261.20.10.2 MB14 downloadsad698051b650…Get
  • 0.5.414 Jun 20261.20.10.1 MB25 downloads9b1b47aab2ca…Get
  • 0.5.310 Jun 20261.20.10.1 MB20 downloadsa29bcf364044…Get

Dependencies

What Soph Upgrade Addonsdeclares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

Sophisticated BackpacksRequired. Yet another backpack mod this time with backpack you can place in world, color in different color combinations, upgrade with more inventory and enhance with many functional upgradesSophisticated CoreRequired. Library mod for Sophisticated modsTom's Simple Storage ModOptional. Simple vanilla style storage modApplied Energistics 2Optional. AE2: A popular automation and storage modTough As NailsOptional. A difficult, survival-based mod that adds body temperature and thirst!Refined StorageOptional. An elegant solution to your hoarding problem.Beyond DimensionsOptional. Beyond Dimensions is a mod that provides storage solutions. It introduces a virtual storage system obtainable in the late-game of vanilla gameThirst Was TakenOptional. A modern take on thirst, compatible with Create, Farmer's Delight & more.ApotheosisOptional. All things that should have beenLegendary Survival OverhaulOptional. Temperature, thirst, limbs management, health overhaul for Survival game!Thirst Was ReclaimedOptional. Brand-new take on thirst, reformation from Thirst Was Taken

Frequently asked

Does Soph Upgrade Addons work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Soph Upgrade Addons 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 Minecraft versions does Soph Upgrade Addons support?

Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Soph Upgrade Addons on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Soph Upgrade Addons support?

Forge, 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 Soph Upgrade Addons?

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 does Soph Upgrade Addons need to run?

It declares Sophisticated Backpacks and Sophisticated Core as required, so those have to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Soph Upgrade Addons 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 Soph Upgrade Addons?

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 Soph Upgrade Addons 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.

BookshelfAn open source library for other mods!GeckoLibA 3D animation library for entities, blocks, items, armor, and more!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 13 Oct 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? .