# How to Install Verified Third-Party App Stores on Android 17 (QPR2): Step-by-Step Guide > AI Release · @ai_release1 · https://ai-release.org/guides/poshagovoe-rukovodstvo-kak-ustanovit-storonnie-magaziny_en.html ## TL;DR - Time to complete: 30–45 minutes, plus over-the-air (OTA) download time. - Difficulty level: Intermediate — you will use `adb` (Android Debug Bridge, the command-line tool for talking to a phone from a computer) and the Android Beta Program. - What you need: a compatible Google Pixel, a Google account enrolled in the Android 17 QPR2 beta program, a USB-C data cable, Android SDK Platform-Tools (`adb`), and the signed installer of a verified third-party app store. - Key rule from the source reporting: verified third-party app stores install only on **Android 17 QPR2**. The requirement applies to verified stores, not to every APK sideload. - Not published in the source: build numbers, the device list, and release dates. Treat those as "check the documentation" items. ## Requirements and setup - **Device:** a compatible Pixel, enrolled in the Android 17 QPR2 beta program. The source material states a compatible Pixel and a beta-program account are required to install the build. The exact supported model list is not published — check the documentation before you start. - **OS level:** Android 17 QPR2. Android Police reports that verified third-party app stores are installable only on Android 17 QPR2; the source gives no build number, no device list and no dates. - **Beta build in scope:** Android 17 QPR2 Beta 6, which Google released for Pixel one week after Beta 5. Such a cadence indicates final fixes ahead of a stable release. - **Host machine:** Windows, macOS or Linux with Android SDK Platform-Tools installed and `adb` on `PATH`. - **Cable and permissions:** a data-capable USB-C cable; USB debugging enabled on the phone; "Install unknown apps" allowed for the source you will use. - **Store artifact:** the official installer from the store's own site, distributed by the developer whose verification you are relying on. Do not use mirrors. Preparation checklist: - [ ] `adb version` prints a version string on the host. - [ ] `adb devices` lists your Pixel as `device`, not `unauthorized`. - [ ] The phone shows an Android 17 QPR2 build under Settings > System > Software update (label may differ by build). - [ ] The Google account on the phone is the one enrolled in the beta program. - [ ] The store installer file is downloaded and its package name is written down. **Example:** on a correctly prepared machine, `adb devices` prints two lines — `List of devices attached` followed by `XXXXXXXXXXXX device`. If the second column says `unauthorized`, unlock the phone and tap "Allow USB debugging". ## Step 1. Confirm the device actually runs Android 17 QPR2 **What to do:** read the build properties from the phone and compare them with what the Android 17 QPR2 requirement demands. **Why:** the store install path is gated by the OS version. Installing before the phone is on the required branch wastes time and produces installer failures that look like store problems but are version problems. **How to check:** run the commands below and read the output. ```bash adb devices adb shell getprop ro.build.version.release adb shell getprop ro.build.version.sdk adb shell getprop ro.build.version.security_patch adb shell getprop | grep -i qpr ``` Expected output on a `device`-state connection: ```text List of devices attached XXXXXXXXXXXX device 17 ``` The last command may print nothing: the source does not publish a QPR build number, so do not invent one. Confirm the QPR2 level in Settings > About phone > Android version, and if the value is missing there, check the documentation for that build. **Example:** a phone still on Android 16 answers the release query with `16`. That is the failure signal — continue to Step 2 and take the beta update before touching the store installer. **Why this works:** `getprop` reads the system property store that the package installer and the store's own verification code consult, so what you see is what the installer sees. ## Step 2. Enroll in the Android 17 QPR2 beta and install the build **What to do:** enroll the Pixel in the beta program, take the over-the-air update, and wait for the phone to boot into the new build. 1. Open the official Android Beta Program page from Google's documentation and enroll the Google account that is active on the Pixel. Verify the current URL in Google's documentation rather than trusting a third-party link. 2. On the phone, open Settings > System > Software update and check for updates. 3. Download and install the offered Android 17 QPR2 build. Beta 6 followed Beta 5 by one week, so expect a fresh update prompt quickly if you are behind. 4. Reboot when prompted and leave the phone idle for a few minutes while the first boot finishes. **Why:** the source reports the build is distributed through the beta program to compatible Pixel devices and beta-program accounts. There is no separate side channel: enrollment is the gate. **How to check:** after the reboot, run: ```bash adb wait-for-device adb shell getprop sys.boot_completed adb shell getprop ro.build.version.release ``` Expected output: `1` from the boot-completed property, then the new release value. A `0` or an empty answer means the boot has not finished yet. Track the installation log while you re-run the install so you can see the installer's decision: ```bash adb logcat -c && adb logcat | grep -iE "PackageInstaller|PackageManager|Verifier" ``` **Example:** a Pixel enrolled on a Friday sees the update prompt on the next check; after the reboot, `ro.build.version.release` returns `17` and the store installer proceeds past the version gate. **Why this works:** the beta OTA replaces the system image, so the version check the store performs moves from a failing branch to a passing one. If you would rather manage apps with a mainstream store while you test the beta build, the workflow in [How to download and install AI apps on Android via RuStore](https://ai-release.org/guides/kak-skachivat-i-ustanavlivat-ii-prilozheniya-na-android.html?utm_source=tg&utm_medium=channel&utm_campaign=guide_inline&utm_content=guide_to_guide) is a compatible baseline on the same device. ## Step 3. Install the verified store and verify the result ![Illustration: Step 3. Install the verified store and verify the result](https://ai-release.org/guides/img/poshagovoe-rukovodstvo-kak-ustanovit-storonnie-magaziny-en-3.jpg?v=1794041695) **What to do:** install the store from its official signed installer, then confirm the package, version and installer source on the device. ```bash adb install -r .apk adb shell pm list packages | grep adb shell dumpsys package | grep -E "versionName|firstInstallTime" adb shell pm list packages -i | grep ``` Replace `` with the application ID of the store (for example the value shown by the store's own download page or its listing). Replace `.apk` with the file you downloaded. Expected output: ```text Success package: versionName= firstInstallTime= package: installer= ``` Verification matrix: | Check | Command | Expected result | |---|---|---| | Package present | `adb shell pm list packages \| grep ` | `package:` | | Version recorded | `adb shell dumpsys package \| grep versionName` | `versionName=` | | Installer identity | `adb shell pm list packages -i \| grep ` | `installer=` | | App launches | tap the store icon | store UI opens without a version-block dialog | **Why:** a version-gated install fails at the installer stage, and the installer records the outcome in the package database. Reading the database tells you whether the store passed the Android 17 QPR2 check or was rejected. **How to check:** open the store, browse a catalogue page, and confirm the UI loads. Success looks like a working store front end and no "cannot be installed on this version" style dialog. If your long-term plan is to distribute an app you build yourself rather than install a store, the private-distribution route in [How to publish a private app on Google Play and install it on Android](https://ai-release.org/guides/poshagovoe-rukovodstvo-kak-opublikovat-chastnoe-prilozh.html?utm_source=tg&utm_medium=channel&utm_campaign=guide_inline&utm_content=guide_to_guide) covers the store-side steps. **Example:** `adb shells pm list packages -i` output reading `package:com.example.store installer=com.android.packageinstaller` means the store was installed by the system installer rather than by a side route — record that value, it is what you compare after any future update. ## Troubleshooting **Problem. The install is rejected during verification** - Error: `Failure [INSTALL_FAILED_VERIFICATION_FAILURE]` - Cause: the device is not on the required Android 17 QPR2 build, or the store is not one of the verified third-party stores covered by the requirement — the source reporting scopes the rule to verified stores only. - Solution: re-read the build and confirm the QPR2 level, then retry: ```bash adb shell getprop ro.build.version.release adb install -r .apk ``` If the version is correct, stop here and check the documentation for the current verified-store list; do not work around the verifier. **Problem. The phone refuses the install from an unknown source** - Error: `Failure [INSTALL_FAILED_USER_RESTRICTED]` - Cause: the app that triggers the install (the file manager or browser you tapped the APK in) has no permission to install unknown apps. - Solution: allow that specific source in Settings > Apps > Special app access > Install unknown apps, then repeat `adb install -r .apk` and expect `Success`. **Problem. No device is visible to adb** - Error: `adb: no devices/emulators found` - Cause: USB debugging is off, the cable is charge-only, or the authorization prompt was dismissed. - Solution: re-enable USB debugging, replug the cable, accept "Allow USB debugging" on the phone and rerun: ```bash adb kill-server && adb devices ``` The device must appear with the state `device`. ## Summary and next steps You confirmed the Android 17 QPR2 requirement on the device, enrolled the Pixel in the beta program to take the build, and verified the store install through the package database. Next, keep the beta updated — Beta 6 landing one week after Beta 5 means new builds arrive fast — and re-verify the installer identity after each store update. ## FAQ **Do I need Android 17 QPR2 to install any APK from a website?** No. The requirement reported by Android Police concerns verified third-party app stores, not arbitrary APK sideloading. **Is Android 17 QPR2 stable yet?** The source material only covers beta builds, including Beta 6 released one week after Beta 5, and shows no stable release date. Check the documentation for the current channel status. **Which Pixel models can install the beta?** The source does not list devices, only that a compatible Pixel and a beta-program account are required. Check the documentation for the supported model list. **Do I need a specific build number for the store install to work?** No build number is published in the source. The requirement is stated at version level — Android 17 QPR2 — so confirm that level on the device and check the documentation for build-specific notes.