Runtime Hash Updater

Runtime Hash Updater

Update your resource pack hash for server resource packs while the server is running.

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33.6K Downloads
fabricmanagementtechnologyutility
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Screenshots

Resource Pack Custom Models

About this Mod

SHA1 Runtime

This is a simple Fabric mod that enables you to update the hash for your server resource pack while the server is still running.

If you are anything like me, I like to constantly add new custom models to my resource pack just to add a little extra customization to Vanilla Minecraft. I do not like however having to ask people to stop what they are doing so I can restart the server to get it to read the new SHA1 Hash.

Setup

Install on a Fabric server only.

  1. Run the server and join.
  2. Whenever you update your resource pack put the new hash in the config/ResourcePackHash.txt file or run the /updatehash command with the new hash.
  3. Once the new hash is added save the file and re-log in game. It should prompt you to install the new resource pack.

Usage:

Once installed you can edit the config/ResourcePackHash.txt file or run the /updatehash command with your new hash to update your hash.
You can use /checkhash to get some info on which hash is being supplied.

You can also use /fetchhash to automagically calculate and set the hash. For a few seconds while the hash is calculated, may cause performance issues if your pack is large.

If you use a third party resource pack host, you can use /setpackurl to set the url of the pack without the need to restart the server.

Commands

/checkhash : Will print out info on the current supplied hash.

/updatehash HASH_EXAMPLE : Will update the config to contain the supplied hash.

/reload_pack : Forces all connected clients to load the resource pack

/fetchhash reload : An optional parameter which will do the above, but force all clients connected to load the new pack

Available Versions

26.1 - Runtime Hash Updater 1.4.2release
MC 26.1fabric
March 31, 2026
1.21.11 - Runtime Hash Updater 1.4.1release
MC 1.21.11fabric
December 12, 2025
1.21.10 - Runtime Hash Updater 1.4.1release
MC 1.21.9, 1.21.10fabric
October 21, 2025
1.21.9 - Runtime Hash Updater 1.4.0release
MC 1.21.9fabric
October 2, 2025
1.21.5 - Runtime Hash Updater 1.3.0release
MC 1.21.5fabric
March 30, 2025

How to Install Runtime Hash Updater on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1).

3

Install Mod

Open the mod browser in the dashboard and search for "Runtime Hash Updater". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

26.1, 1.21.11, 1.21.10 (+14 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Runtime Hash Updater server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1). You can switch loaders with one click in the panel.

Is Runtime Hash Updater compatible with fabric?

Runtime Hash Updater officially supports fabric for Minecraft 26.1, 1.21.11, 1.21.10. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Runtime Hash Updater – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Runtime Hash Updater consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

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Install Runtime Hash Updater with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
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NVMe SSD Storage
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Details

License
Creative Commons Zero v1.0 Universal
Server-side
Required

Supported Versions

26.11.21.111.21.101.21.91.21.51.21.41.21.31.211.20.61.20.4+7 more