K sign

KSign can be installed on compatible iPhones and iPads using an IPA signing method.

A jailbreak is not required.

However, you must have a working way to install KSign initially and a valid certificate to sign additional apps.

Before installing KSign

1. Open Settings → General → About.
2. Check your device model and exact iOS version.
3. Confirm that your firmware is compatible with the selected build.
4. Back up important application data.
5. Keep your battery above 50%.
6. Connect to stable Wi-Fi.
7. Prepare a trusted installation tool.
8. Download KSign only from the original Nyasami GitHub repository.

How to download and install KSign IPA

1. Open Safari or another browser.
2. Visit github.com/Nyasami/Ksign.
3. Open the Releases section.
4. Select KSign v1.6 for the stable version.
5. Choose the latest beta only if you need its experimental features.
6. Download the IPA from the release assets.
7. Save the downloaded file to Files.
8. Open AltStore, SideStore, Sideloadly, Feather or another compatible signing tool.
9. Import the KSign IPA.
10. Sign the app using your supported method.
11. Install KSign on your iPhone.
12. Enable Developer Mode if prompted.
13. Trust the developer app under VPN & Device Management if required.
14. Open KSign from the Home Screen.
15. Import your own signing certificate and provisioning profile.

How to import a certificate into KSign

1. Open KSign.
2. Go to the certificate section.
3. Choose the option to import a certificate.
4. Select your P12 file.
5. Import the matching mobileprovision file.
6. Enter the P12 password.
7. Review the certificate name and expiration date.
8. Confirm that the certificate and provisioning profile match.
9. Save the certificate configuration.

A signing certificate must be valid for the application and target device.

How to sign and install an IPA using KSign

1. Open KSign.
2. Go to Library or Files.
3. Select the import option.
4. Choose an IPA from Files.
5. Wait for the IPA to be imported.
6. Open the application's details.
7. Select Sign or Sign & Install.
8. Choose a suitable signing certificate.
9. Review the app name and bundle identifier.
10. Adjust supported settings if necessary.
11. Add compatible tweaks only if needed.
12. Start signing.
13. Wait for the signing process to finish.
14. Review the result and installation logs.
15. Tap Install.
16. Confirm the iOS installation prompt.
17. Open the installed app.

How to install multiple apps

KSign v1.6 includes bulk installation.

1. Open the app library.
2. Import the IPA files you want to install.
3. Select multiple compatible applications.
4. Choose the supported bulk signing or installation option.
5. Select the certificate.
6. Review the applications.
7. Start the operation.
8. Check the results for each application.

Bulk installation does not remove Apple's certificate limits.

How to add KSign app sources

1. Open KSign.
2. Go to the available Sources section.
3. Choose Add Source.
4. Paste a trusted, compatible app source URL.
5. Save the source.
6. Refresh the repository.
7. Browse its available applications.
8. Download an authorized IPA.
9. Sign and install it using your valid certificate.

KSign also publishes its own AltStore-compatible source:

https://raw.githubusercontent.com/Nyasami/Ksign/refs/heads/main/repo.json

How to inject tweaks using KSign

1. Import a compatible IPA.
2. Open its signing configuration.
3. Find the tweak injection settings.
4. Select the injection option.
5. Import an authorized tweak file or resource.
6. Choose the supported injection path.
7. Select app extension injection if necessary and supported.
8. Review the tweak dependencies.
9. Sign the modified IPA.
10. Install it.
11. Test the app before adding another tweak.

Version 1.6 improves injection paths, extension injection and support for compatible .bundle resources.

How to install KSign without a computer

If you already have a working on-device signing app and appropriate signing credentials, you can install KSign without using a computer.

KSign itself does not provide a certificate or guarantee a working one-tap Safari installation.

Important security advice

Download KSign from the original GitHub project.

Do not trust unknown certificate-sharing websites.

Never give your P12 password or certificate private key to an unfamiliar service.

Check the developer profile and permissions before installing.

Install one modified package at a time until you confirm that your setup works.

KSign combines IPA signing, app installation, tweak injection, application repositories and file management in one iOS application.

On-Device IPA Signing

Sign compatible IPA files on your iPhone or iPad.

Direct IPA Installation

Install applications that have been signed using a valid certificate and provisioning profile.

P12 Certificate Import

Import compatible signing certificates.

Provisioning Profile Support

Use mobileprovision files that match the selected signing certificate and application.

Certificate Management

Manage available signing configurations from within KSign.

Certificate Revocation Checks

KSign v1.4 introduced an option to check certificate revocation status.

App Signing Library

Keep imported IPA files organized for signing and installation.

App Source Manager

Add compatible repositories to browse and download applications.

AltStore Source Support

KSign provides its own AltStore-compatible JSON repository.

IPA Downloader

Download compatible IPA packages and manage the results inside KSign.

Background Downloads

Version 1.5 introduced improvements for background activity and downloading.

iOS may still pause long-running operations.

Download Notifications

Version 1.5.1 added an optional notification after background downloads finish.

Bulk Signing

Version 1.5 introduced bulk signing for multiple selected applications.

Bulk Installation

Version 1.6 improves installing several applications through the same workflow.

Sign and Install

Sign an IPA and immediately start its supported installation process.

Alternative Installation Methods

Version 1.6 introduces an idevice installation option.

RSD Support

Version 1.6 includes Remote Service Discovery support for compatible device communication.

These options depend on iOS permissions and the required setup.

Semi-Local Installation

The October 2026 beta makes semi-local installation the default method.

Tweak Injection

Inject compatible tweaks into supported IPA packages before signing.

Custom Injection Path

Version 1.6 adds injection path controls.

App Extension Injection

Inject supported modifications into selected app extensions.

Bundle Resource Injection

Version 1.6 adds support for compatible .bundle files as tweak resources.

Tweaks Folder

Keep supported tweak files organized in KSign's application storage.

Modify Without Signing

Version 1.4 adds an option to modify compatible application files without immediately signing the package.

App Name Editing

Change an app's display name where supported.

Prefix and Suffix Settings

Version 1.5.1 introduces settings for adding text before or after an application's name.

App Icon Customization

Version 1.3.1 restores the option to change an application's icon.

Bundle Identifier Editing

Configure a different application identifier when necessary.

Changing the bundle identifier can break logins, notifications, app groups and other features.

Built-In File Manager

Browse and manage files inside KSign's accessible storage.

Fast File Import

Version 1.3 improves importing large files into the application.

Text File Editing

Version 1.5 adds tools for editing and creating supported text files.

Plist Editor

KSign includes a property-list editor for supported configuration files.

ZIP Extraction

Version 1.4.1 introduces ZIPFoundation as an alternative archive extraction method.

File Export

Export supported files through the iOS file picker.

Signing Logs

Version 1.5 includes a Logs tab for checking the signing process.

Export Logs

Version 1.5.1 adds a share option for exporting logs.

Cache and Storage Reset

Version 1.5 introduces settings to clear supported cache and storage data.

Delete After Installation

Version 1.3.1 adds an optional setting for removing installation files after successful processing.

Liquid Glass Appearance

Version 1.4 introduces an updated appearance for modern iOS interfaces.

iOS 26 Interface Improvements

Version 1.6 improves compatibility with iOS 26.

Disable Liquid Glass – Beta

The October 2026 beta includes an option to disable Liquid Glass styling for supported apps on iOS 26.

Force Liquid Glass – Beta

The beta also changes compatibility flags to allow selected applications to use newer appearance behavior.

These options do not guarantee that every application can support Liquid Glass.

Dark and Tinted App Icons

Version 1.4.1 introduces a default app icon that responds to supported dark and tinted appearance settings.

Multiple Languages

KSign's recent releases include translation improvements for German, Russian, Arabic and Vietnamese.

Supported iOS Versions

1. iOS 15 and earlier: Current compatibility not established.
2. iOS 16: Reported minimum for the modern application.
3. iOS 17: Within the reported range, subject to signing requirements.
4. iOS 18: Within the reported range, subject to signing requirements.
5. iOS 26: Explicitly optimized in v1.6.
6. iOS 27: Full signing and installation compatibility has not been verified.

Supported Devices

KSign is designed for compatible iPhones and iPads.

Exact functionality depends on the iOS version, installed certificate and installation method.

KSign vs ESign

KSign is inspired by ESign's interface but is built using Feather's codebase.

Both provide IPA signing and installation workflows.

KSign vs Feather

Feather is the original open-source base for KSign.

KSign adds its own ESign-style interface, changes and release history.

KSign vs AltStore

KSign signs IPAs using imported certificates and provisioning profiles.

AltStore Classic generally uses Apple Account signing and an AltServer-assisted installation workflow.

Important Limitations

KSign does not provide unrestricted Apple Developer privileges.

It cannot guarantee that every IPA will install.

Shared certificates can be revoked.

Some injected tweaks require jailbreak components unavailable inside ordinary signed apps.

Modifying application identifiers or entitlements can make an IPA stop working.

KSign is not a jailbreak and cannot remove every iOS security restriction.

If KSign is not installing, signing apps or importing certificates, try these fixes.

KSign IPA Is Not Installing

Check your iOS compatibility, signing certificate and selected installation method.

KSign Is Not Opening

The certificate used to install KSign may have expired or been revoked.

Unable to Verify App

Check the certificate status and whether the installed package was signed correctly.

KSign v1.3 included a fix for certain application verification errors.

Integrity Could Not Be Verified

A certificate may be invalid, revoked or incompatible with the target application.

Version 1.3 and later releases contain signing fixes for this type of problem.

Signing Certificate Is Missing

Import a valid P12 certificate with its matching provisioning profile.

P12 Password Is Incorrect

Make sure you entered the password associated with that certificate.

Provisioning Profile Does Not Match

Check the Team ID, app identifier, device registration and requested entitlements.

Certificate Has Expired

Replace or renew the certificate through the appropriate authorized process.

Certificate Has Been Revoked

A revoked certificate cannot normally be used for new valid installations.

KSign Signing Failed

Check the logs and confirm that the IPA and signing configuration are compatible.

IPA Has an Unusual Bundle Structure

Version 1.6 includes fixes for signing some applications with unusual bundle layouts.

IPA Has No Display Name

Version 1.6 fixes a problem with apps that contain an empty display name in Info.plist.

IPA Import Takes Too Long

Update to v1.6. Version 1.3 introduced a faster file import method.

IPA Download Stuck at 100%

Version 1.3 fixes a downloader problem that could freeze at 100%.

App Installs with the Wrong Bundle Identifier

Version 1.3 fixes an issue with the bundle identifier used during Sign & Install.

App Installs but Does Not Open

The IPA may contain incompatible extensions, unsupported entitlements or modified application files.

Bulk Installation Is Not Working

Check that each IPA is compatible with the selected certificate and review individual installation logs.

Tweak Injection Is Not Working

The tweak may use an unsupported library, path or dependency.

App Crashes After Injection

Remove the injected tweak and test the original application.

App Extension Is Not Working

Version 1.6 introduces app-extension injection improvements, but the extension still needs compatible signing permissions.

.bundle File Is Not Included

Use v1.6 and check that the resource is imported through the supported tweak workflow.

KSign File Manager Cannot Open a ZIP

Try the alternative ZIPFoundation extraction setting introduced in v1.4.1.

App Icon Does Not Change

Check that the replacement icon was included before signing.

App Source Is Not Loading

Check the repository URL, network connection and source format.

Background Downloads Stop

iOS may suspend KSign or limit network processing in the background.

Certificate Revocation Check Fails

Check internet connectivity and whether the certificate-status service is available.

Installation Prompt Does Not Appear

Try another supported installation method and review the signing and installation logs.

Semi-Local Installation Fails

Review the installation settings. The latest beta uses semi-local installation by default.

RSD Connection Is Not Working

Check pairing requirements, iOS compatibility and the device communication setup.

Liquid Glass Appearance Is Not Working

The October 2026 beta includes appearance changes for iOS 26. Individual apps may still be incompatible.

KSign Is Not Working on iOS 27

The original developer has not published a complete iOS 27 compatibility table. Review recent issues before relying on it.

KSign Stops Working After an iOS Update

An iOS update may change signing, installation or device communication behavior.

Sharing Certificates Causes Problems

Shared certificates may be revoked or restricted. Use a signing identity you control whenever possible.

Safety Tips

Download KSign only from the original GitHub repository.

Back up important data and keep your battery above 50%.

Use stable Wi-Fi for downloads and setup.

Verify the certificate name, developer profile and permissions.

Keep signing private keys and passwords secure.

Install one package at a time and use only trusted app repositories.