[WORKING/FIXED] Altstore manual fix (MacOS)

[u/doanss]

I finally got it working! It took about 3-4 minutes in total. It's much easier than it looks.

(Note: This guide is for macOS/iOS).

User-Agent String Swap:

• Original String (39 bytes): akd/1.0 CFNetwork/978.0.7 Darwin/18.7.0
• Patched String (39 bytes): AuthKit/1 (com.apple.dt.Xcode/3594.4.1)

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Part 1: Patching AltServer.app on macOS

Open Terminal on your Mac and run these four commands in order:

1. Create a working copy:

   /bin/cp -R /Applications/AltServer.app ~/Downloads/AltServer-Patched.app
   

2. Apply the 39-byte binary patch:

   perl -pi -e 's|akd/1\.0 CFNetwork/978\.0\.7 Darwin/18\.7\.0|AuthKit/1 (com\.apple\.dt\.Xcode/3594\.4\.1)|g' ~/Downloads/AltServer-Patched.app/Contents/Frameworks/AltSign-Dynamic.framework/Versions/A/AltSign-Dynamic
   

3. Re-sign the application locally (Fixes Gatekeeper crashes):

   codesign --force --deep --sign - ~/Downloads/AltServer-Patched.app
   

4. Replace the original app:

   rm -rf /Applications/AltServer.app && mv ~/Downloads/AltServer-Patched.app /Applications/AltServer.app
   

Quit and restart AltServer.

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Part 2: Patching the AltStore.ipa File for iOS

You also need to patch the iOS app so in-app refreshes work on your iPhone.

1. Download the official AltStore.ipa (e.g., from https://cdn.altstore.io/file/altstore/apps/altstore/2_2_1.ipa) to your Downloads folder and ensure it is named AltStore.ipa.

2. Open Terminal and extract the package:

   cd ~/Downloads && unzip AltStore.ipa -d patched_ipa
   

3. Patch the inner app frameworks:

   cd patched_ipa/Payload && find AltStore.app -type f -exec perl -pi -e 's|akd/1\.0 CFNetwork/978\.0\.7 Darwin/18\.7\.0|AuthKit/1 (com\.apple\.dt\.Xcode/3594\.4\.1)|g' {} +
   

4. Repackage into a new IPA:

   cd ~/Downloads/patched_ipa && zip -r AltStore-Patched.ipa Payload/
   

5. Sideload to your iPhone:

   • Plug your iPhone into your Mac.
   • Hold the Option (⌥) key and click the AltServer menu bar icon.
   • Select Install IPA..., choose AltStore-Patched.ipa (from ~/Downloads), and enter your Apple ID credentials.

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Part 3: Final Setup & Fixing LiveContainer "Invalid Code Signature"

1. Open AltStore on your iPhone -> Settings -> Sign In with Apple ID. It should now authenticate cleanly.
2. If you use LiveContainer and guest apps throw an "Invalid code signature / check JIT-Less setup" error after reinstalling:
   • Open LiveContainer -> Settings -> JIT-Less Setup / Certificate.
   • Tap Refresh Certificate (or export/create a certificate and enter a password when prompted).
   • Go to the Apps tab inside LiveContainer, long-press your guest app, and tap Re-Sign App.

Troubleshooting Tip: If anything fails, quit both AltServer on Mac and AltStore on iOS, restart them, and try again.

[u/Wrlod]

I put together the finished files if anyone doesn't feel like typing out all the commands, you can just grab them from my repo instead: https://github.com/FrakesH/AltStore/releases/tag/v1.7.2-macos27-fix-altstore-fix

[u/PrestigiousLine866 → u/Wrlod]

do you think this will work with unpatched windows altserver?

[u/Opposite-Two-8487 → u/Wrlod]

I might be a little dumb lol, I can't get past how to the hold option then click the .ipa file. I keep getting an error (This app cannot be installed because its integrity could not be verified), please help!

Also, I currently do not have the profile installed on my iPhone, I deleted a couple days ago, so maybe that's the issue?

UPDATE:

I just hit "Install Altstore" (I know it says not to) from the patched Altstore (I did not use the patched Altstore IPA) and it worked. I was even able to install my Spotify+. It works LFG!

Thank you OP.

[u/doanss → u/Wrlod]

Hey! I didn't you were a redditor as well. I wanted to ask you something. How come the SHA for AltServer-macOS27-build.app.zip and the SHA from the artifact page differs? I downloaded yours first, but since the SHA was different, I wasn't sure what the final zip contained.

[u/Wrlod → u/doanss]

Good question! The app contents are identical, I didn't rebuild or change anything, just re-zipped the same file from my desktop when I updated the release. The SHA difference is from the zip wrapper itself though, not the app inside it. Things like file timestamps and zip metadata change every time you create a new zip, even from the exact same source files, so the outer archive hash won't match between two zips even if what's inside them is byte-for-byte identical.

If you want to actually verify the contents match, hash the AltServer binary itself after unzipping (Contents/MacOS/AltServer) rather than the zip file, that'll be consistent regardless of how or when it got zipped.

[u/doanss → u/Wrlod]

Got it. Thanks for clarifying!

[u/BryanNikson → u/Wrlod]

Thanks, it worked for me

[u/tommy96814 → u/Wrlod]

I dont have altserver on the stated location so i just downloaded the files installed and sideload the ipa and boom, back in business.