How to update FO
Last updated
Last updated
As with any update, things may break. Probably not due to the modpack itself, but maybe your launcher, your custom mods or your hard drive. If worried, make backups.
Upgrades from stable to unstable (alpha, beta) versions of the modpack are never supported (make a separate instance!), while updates from unstable versions to stable ones are.
Any kind of instance downgrading is never supported. Make a separate old instance or use something like if your server hasn't updated yet.
If you follow these instructions properly, all custom mods and most mod settings you have will persist (except those that need to change). If you want, you can to get the latest changes.
If you are using a supported version of Fabulously Optimized and you haven't added any extra mods, do not update any mods manually, just update the modpack instead.
If you did add extra mods, update those individually after you've ensured you're on latest version of Fabulously Optimized.
Updating mods that are in FO may cause unexpected issues which FO releases would prevent, so manual updates only make your own life harder.
If you are using an unsupported (legacy) version of Fabulously Optimized, you may carefully update the mods.
Keep in mind that we haven't tested those updates, so you may run into issues and need to revert back to previous versions.
Some launchers have options to update all mods at once. Do not use this feature for reasons listed above.
Even for legacy versions of FO, updating everything at once like that may cause problems like mod loader mismatch, Minecraft version mismatch, mod platform variances (more recent version on one platform vs another) and so on.
It is always safer to update each mod individually so that you can see the update was successful and valid for your MC version/mod loader.
If you did any of the things above and are having issues, simply update Fabulously Optimized again.
This will reset your mod list to the specified FO version ones, even if you used the same version of FO beforehand.
If you haven't changed the mods:
Select Minecraft from the grid or sidebar
On My Modpacks, right click Fabulously Optimized, then ⇄ Change Version
Don't see that option? Follow the other instructions below.
Click Continue.
Optional: Select the version you want by selecting it on the dropdown before you click Continue.
Modpack will now update.
Run it and check the version difference in the bottom right corner.
If you added or removed some mods:
Select Minecraft from the grid or sidebar
On My Modpacks, click Fabulously Optimized
Click ⫶→ Profile Options
Uncheck "Allow content management for this profile".
This will not affect added content and you can re-enable content management after the update.
Click Continue
Click ⫶ → ⇄ Change Version.
Click Continue.
Optional: Select the version you want by selecting it on the dropdown before you click Continue.
Modpack will now update.
Run it and check the version difference in the bottom right corner.
Go to |||\ "Library"
Select existing Fabulously Optimized instance
Click ⤓ Update modpack on top right (Below ▶️ Play and + Install content)
Select the version you want and click ⇆.
Select existing Fabulously Optimized instance
Click Edit on the sidebar
Select Modrinth on the tab list
Click Update pack
Optional: Select the version you want by selecting it on the dropdown before you click Update pack.
Once the name prompt comes up, click Yes
Click Add Instance
Select Modrinth tab from the left
Select "Fabulously Optimized"
Click OK
Optional: Select the version you want by selecting it on the dropdown before you click OK.
The modpack will now install.
Click that version you just created, then Minecraft Folder
Click the previous version, then Minecraft Folder
Copy the important files and folders over:
saves - your local worlds
shaders - if you use any
screenshots - screenshots you've taken with F2 or F9
servers.dat - your multiplayer servers
options.txt - if you want to keep your vanilla option and all hotkey changes
Ignore the Copy all 3 folders! file, that's for vanilla launcher users
Close the folders and run the new version
If everything looks right, delete the old version
In most cases:
Run the existing version, wait for the progress bar to fill up
If you get a popup "This modpack uses new versions of the following...", just click Update.
Check the version difference in the bottom right corner.
If there is a new Minecraft version:
Drag the ZIP-archive to MultiMC window
Click that version, then Minecraft Folder
Click the previous version, then Minecraft Folder
Copy the important files and folders over:
saves - your local worlds
shaders - if you use any
screenshots - screenshots you've taken with F2 or F9
servers.dat - your multiplayer servers
options.txt - if you want to keep your vanilla option and all hotkey changes
Ignore the Copy all 3 folders! file, that's for vanilla launcher users
Close the folders and run the new version
If everything looks right, delete the old version
In most cases, you may also use the older version of the installer if you have it already.
Windows: Open the .exe file, click More info and then Run anyway.
macOS: See instructions below
Linux: Open the .appimage file and click Run once when prompted.
Select preferred FO/Minecraft version and install
Run Minecraft Launcher. You'll see the new installation, click PLAY.
Note: you may now see a new file paigaldaja_meta.json next to the installer. This is a configuration file that ensures smoother upgrades and remembers some of your install settings.
However, at some point you may still want to do that in order to get the latest changes.
Open the modpack folder
CurseForge App: right click on the modpack tile → Open Folder
Modrinth App: right click on the modpack tile → 📂 Open folder
Prism Launcher: right click on the instance → Folder → .minecraft
MultiMC: right click on the instance → Minecraft Folder
Minecraft Launcher: click Installations → hover on the instance → click 📁
Delete the config folder
If you prefer, also delete options.txt which stores vanilla options
Rename the file to pack.zip
Open the file you renamed, go to overrides
Copy/extract the folder configs out to the modpack folder you previously opened
You may delete the pack.zip after you're done
Launch the game. Modpack's defaults are now applied!
resourcepacks - if you added any (it is not needed to copy )
resourcepacks - if you added any (it is not needed to copy )
Download and run it
Download and install version 0.16.10
, then click the ⬇️ button
Open the zip file and copy all folders to your .minecraft folder
Recommended: delete options.txt to get
Download and install
Minecraft 1.19-1.19.3: Fabric Loader 0.14.24 and
Minecraft 1.17-1.18.2: Fabric Loader 0.14.12 and
Minecraft 1.16.5: Fabric Loader 0.13.3 and
Go to on CurseForge
Open the zip file and copy all folders from zip's minecraft folder to your .minecraft folder
Recommended: delete options.txt to get
No longer supported.
Because the pack is using YOSBR, your vanilla options and most of the mod ones will not change when you upgrade, . This is made so that you can upgrade without having to reconfigure your options all the time.
Download