PlayIntegrityFix

Overview

Maintained by KOWX712 following the deprecation of upstream repositories, PlayIntegrityFix (commonly abbreviated PIF) is the leading community-standard module for restoring MEETS_DEVICE_INTEGRITY on rooted Android hardware running Magisk, KernelSU, or APatch.

Google’s Play Integrity API serves as the gatekeeper for banking applications, biometric security tokens, payment gateways (Google Wallet), and DRM-protected games. Unlocking the bootloader exposes the device status through hardware cryptographic checks. PlayIntegrityFix circumvents this validation by forcing DroidGuard attestation into software mode and masking property lookups with certified OEM build parameters.

Technical Architecture & How It Works

The Attestation Interception Flow

1. Zygote Fork Detection: When an app queries Play Integrity, Google Play Services spawns its specialized evaluation worker: com.google.android.gms.unstable.
2. libc Hooking: PlayIntegrityFix hooks the Android property service (__system_property_get and __system_property_read_callback).
3. Targeted Spoofing: When the DroidGuard engine asks for:
   • ro.product.model
   • ro.product.brand
   • ro.build.fingerprint
   • ro.build.version.security_patch The module intercepts these calls in-memory and supplies clean values matching a certified device profile. Non-GMS apps on the device continue to see your real device name, ensuring zero side-effects on cameras, display calibration, or OEM launchers.

Installation & Setup

1. Open your root manager (Magisk App, KernelSU App, or APatch).
2. Ensure Zygisk is running:
   • Magisk: Enable Zygisk in Settings.
   • KernelSU / APatch: Verify that Zygisk Next is installed and active in your module list.
3. Flash the PlayIntegrityFix_vX.zip package and reboot.
4. Download a Play Integrity checker application (such as Play Integrity API Checker by YASNAC / dev community) from Google Play Store.
5. Tap Check Integrity. You should see both MEETS_BASIC_INTEGRITY and MEETS_DEVICE_INTEGRITY pass with green checkmarks.

Maintaining Working Fingerprints

Google routinely updates its server-side revocation list, flagging fingerprints that originate from known open-source modules.

When a ban wave occurs:

1. Locate a clean, working fingerprint from an unrooted certified Android device (or via automated helpers like playcurlNEXT).
2. Save the properties to /data/adb/pif.json.
3. Kill Google Play Services:

   su -c "killall com.google.android.gms.unstable"

4. Re-check attestation status.