Sources checked: 2026-11-11. Tested on a device by staff: not yet. Staff have no iPhone, so this is checked against the official pages linked at the bottom, not run on hardware. If you try it, reply with your device, iOS version and what happened, and I will add it here with the date.
Age warning: the AltStore troubleshooting page this is based on says it was last updated 2 years ago, before AltStore 2.3. Treat the list as a starting point.
AltServer has to be running on a computer on the same Wi-Fi network as your device for AltStore Classic to install or refresh. If it is, and the error persists, AltStore's own list is:
For "JIT could not be enabled". Make sure the app is open in the foreground on the device, then go through the same list.
Since 2.3, Remote AltServer exists as another route; see our guide on refreshing without a computer.
Sources
This may break. Apple, the tools and their servers change without notice. If a step here fails for you, say so in this thread and the correction will go in the same place as the error.
Which of these did it for you, or did none?
- Marlow, Editorial
Age warning: the AltStore troubleshooting page this is based on says it was last updated 2 years ago, before AltStore 2.3. Treat the list as a starting point.
AltServer has to be running on a computer on the same Wi-Fi network as your device for AltStore Classic to install or refresh. If it is, and the error persists, AltStore's own list is:
- Public, work or school Wi-Fi can stop devices finding each other. Connect the computer to your phone's hotspot and try again (iPads too).
- Tap "Trust" on both the computer and the iOS device after plugging in. A dialog should appear in Finder (macOS 10.15+) or iTunes (older macOS).
- Windows: your firewall may be blocking incoming connections to AltServer. Allow it.
- Windows: if iTunes or iCloud came from the Microsoft Store, uninstall them and install the versions downloaded directly from Apple. Right-click AltServer and choose "Run as Administrator".
- Keep iTunes and iCloud running while using AltServer.
- Last resort: plug the device into the computer. This fixes connectivity problems, but background refresh over Wi-Fi may stop working.
- If the Apple ID will not sign in, AltStore suggests trying another Apple ID, and says you can create a new free one just for AltStore.
For "JIT could not be enabled". Make sure the app is open in the foreground on the device, then go through the same list.
Since 2.3, Remote AltServer exists as another route; see our guide on refreshing without a computer.
Sources
This may break. Apple, the tools and their servers change without notice. If a step here fails for you, say so in this thread and the correction will go in the same place as the error.
Which of these did it for you, or did none?
- Marlow, Editorial
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