🖥️AltServer

AltServer 1.7.3 (macOS only)

May 22, 2025

• Fixed enabling JIT on iOS 17.4+

  • Requires pymobiledevice3 3.2 or later

AltServer 1.7.2

September 16, 2024

• Fixed apps becoming unverified on iOS 18

AltServer 1.7.1 (macOS only)

November 30, 2023

• Increases default AltJIT timeout to 90 seconds

• Change AltJIT timeout via defaults Terminal command:

  defaults write com.rileytestut.AltServer JITTimeout [seconds]

• Adds --timeout argument to altjit CLI tool

AltServer 1.7 (macOS only)

September 18, 2023

New

• Mail Plug-in no longer required!

• Supports macOS 14 Sonoma

altjit CLI

• Command-line tool to enable JIT on iOS 17 devices

• Used internally by AltServer, but can be run manually via Terminal

• e.g. AltServer.app/MacOS/altjit enable DolphiniOS --udid [device ID]

• Requires installing additional dependencies (view AltJIT page for instructions)

• Thanks to pymobiledevice3 for their work on the iOS 17 Developer Disk format!

Fixed

• Fixed AltJIT on iOS 17

• Fixed "About" panel appearing behind other apps

• Updates Copyright year to 2023

AltServer 1.6.2 (macOS only)

September 28, 2023

New

• Mail Plug-in no longer required!

Fixed

• Fixed "About" panel appearing behind other apps

• Updates Copyright year to 2023

AltServer 1.6.1 (Windows only)

February 20, 2023

• Supports Apple IDs with Advanced Data Protection (ADP) enabled

AltServer 1.6

January 30, 2023

New

Revamped Error Handling

• Completely revamped error handling to include as much information as possible, which should make debugging certain issues much easier

• Revised error messages to be more descriptive and provide more suggestions

• Adds “View More Details”/”Help” button to error alerts to view detailed error information

• Adds "Search FAQ" button to error alert

• Revised error domain format to [Module].[ErrorType]

• AltServer.ServerError codes start at 2000

• AltStore.AppleDeveloperError codes start at 3000

• Uses underlying error messages (if available) for several AltServer.ServerError errors

• Encodes/Decodes all Codable user info values, not just recognized types

iOS Version Compatibility

• Checks iOS compatibility before installing AltStore

• Downloads latest compatible AltStore version for your iOS device

Improved

• Uses CFBundleDisplayName instead of CFBundleName for app name if it exists (Windows)

• Revised error messages to match AltServer macOS (Windows)

Fixed

• Fixed error encoding CodableError Int/UInt user info values

• Fixed adding failures to NSErrors with nil localizedFailureReasons

• Fixed occasional crash when receiving requests from AltStore (macOS)

• Fixed installation alerts saying "iPhone" instead of actual device name (macOS)

• Fixed AltServer notification icon not appearing in Windows 11 22H2 taskbar (Windows)

AltServer 1.5.1

July 14, 2022

• Fixed signing in with Apple IDs that contain capital letters

• Fixed signing in with Apple IDs that have 2FA enabled but don’t have any registered trusted devices

• Fixed incorrect “Developer Disk incompatible with [iOS Version]” error when enabling AltJIT

• Fixed installing Mail plug-in after uninstalling it (macOS)

• Fixed memory leak when refreshing apps over WiFi (macOS)

• Fixed an issue causing wired connections to occasionally stall (macOS)

• Fixed an issue causing indefinite high CPU usage after enabling AltJIT (Windows)

• Fixed an issue causing indefinite high CPU usage after updating AltStore (Windows)

AltServer 1.5

May 3, 2022

New

AltJIT

• Allows sideloaded apps to use Just-in-Time (JIT) compilation

• Go to "Enable JIT" > [Your Device] from the AltServer menu, then choose a sideloaded app

  • Your device must be on the same WiFi network as AltServer or connected to your computer via USB

• JIT will remain enabled until the app is quit from the app switcher or purged from memory in the background

• Requires iOS 14 or later

Direct .ipa Sideloading

• Sideload apps (.ipa's) directly to iOS devices without installing AltStore first

• Hold Option (macOS) or Shift (Windows) when clicking the AltServer icon to reveal new "Sideload .ipa…" menu option

• Supports iPhones and iPads running iOS 9.3 or later

• Supports Apple TVs running tvOS 9.3 or later (macOS)

  • For now, Apple TVs must be manually paired with Xcode first

• Apps sideloaded with AltServer must be manually re-installed every 7 days

  • Install AltStore to automatically refresh your sideloaded apps in the background

Multiple Device Support

• Install AltStore onto multiple iOS devices using the same Apple ID

• You must use the same computer to install AltStore each time

Mail Plug-in Improvements (macOS)

• AltPlugin can now be updated independently from AltServer

• AltPlugin is no longer required if both System Integrity Protection (SIP) and Apple Mobile File Integrity (AMFI) are disabled

Improved

• Added “…” to menu items that require additional user input to match macOS HIG (macOS)

• Prefers “Individual” paid teams over free teams if there are multiple Apple Developer teams associated with your Apple ID

• Revokes the previous iOS Development certificate created by AltStore (if one exists) instead of revoking a random one

• Updated “Cannot activate more than 3 apps” error alert to list all sideloaded app bundle IDs

• Revised code signing logic to more accurately match Apple’s codesign tool

• Improved error message when authenticating with invalid anisette data

• Improved error messages for libimobiledevice errors

• Improved error messages for various AltServer-specific errors

• Updated libimobiledevice dependency to 1.3.0

• Updated LaunchAtLogin dependency to 4.1.0 (macOS)

Fixed

• Fixed “App Group does not exist” error when sideloading apps

• Fixed a potential crash when disconnecting an iOS device from your computer

• Fixed a potential crash when sideloading certain apps

• Fixed potentially registering an app group twice when sideloading an app containing app extensions

• Fixed “RSTPlaceholderView.nib couldn’t be saved” error when sideloading apps (macOS)

• Fixed duplicate “Revoke Development Certificate” alerts when sideloading apps (macOS)

• Fixed issue unzipping .ipa’s with unexpected files in Payload directory (Windows)

• Fixed ignoring some error responses from Apple’s developer servers (Windows)

• Fixed memory leak when parsing responses from Apple’s developer servers (Windows)

• Fixed various memory leaks when managing a device’s provisioning profiles (Windows)

• Fixed various memory leaks when installing AltStore or sideloading .ipa’s (Windows)