3 Project board: https://github.com/orgs/mozilla-mobile/projects/40
7 ⚠️ **Warning**: Replacing a _Fennec_ (Firefox for Android) installation with _Fenix_ (Firefox Preview) can (and at the time of writing this definitely **will**) result in **DATA LOSS**. Do not replace an installation of Fennec (Firefox for Android) that contains data you do not want to risk losing (e.g. open tabs, history, bookmarks, top sites, ..).
11 The following links point to the latest *Fenix* (Firefox Preview) builds (Nightly; from `main`) that are setup to **replace** a *Fennec* (Firefox for Android) release version (`org.mozilla.firefox`).
13 * [ARM64/Aarch64 devices (64 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/project.mobile.fenix.v2.fennec-production.latest/artifacts/public/build/arm64-v8a/geckoBeta/target.apk)
14 * [ARM devices (32 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/project.mobile.fenix.v2.fennec-production.latest/artifacts/public/build/armeabi-v7a/geckoBeta/target.apk)
15 * [x86_64 devices (64 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/project.mobile.fenix.v2.fennec-production.latest/artifacts/public/build/x86_64/geckoBeta/target.apk)
16 * [x86 devices (32 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/project.mobile.fenix.v2.fennec-production.latest/artifacts/public/build/x86/geckoBeta/target.apk)
20 The following links point to the latest *Fenix* (Firefox Preview) builds (Nightly; from `main`) that are setup to **replace** a *Fennec Beta* (Firefox for Android - Beta) release version (`org.mozilla.firefox.beta`).
22 * [ARM64/Aarch64 devices (64 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/project.mobile.fenix.v2.fennec-beta.latest/artifacts/public/build/arm64-v8a/geckoBeta/target.apk)
23 * [ARM devices (32 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/project.mobile.fenix.v2.fennec-beta.latest/artifacts/public/build/armeabi-v7a/geckoBeta/target.apk)
24 * [x86_64 devices (64 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/project.mobile.fenix.v2.fennec-beta.latest/artifacts/public/build/x86_64/geckoBeta/target.apk)
25 * [x86 devices (32 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/project.mobile.fenix.v2.fennec-beta.latest/artifacts/public/build/x86/geckoBeta/target.apk)
29 The following links point to the latest *Fenix* (Firefox Preview) builds (Nightly; from `main`) that are setup to **replace** a *Fennec Nightly* (Firefox for Android - Nightly) release version (`org.mozilla.fennec_aurora`).
31 * [ARM64/Aarch64 devices (64 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/mobile.v2.fenix.nightly.latest.arm64-v8a/artifacts/public/build/arm64-v8a/target.apk)
32 * [ARM devices (32 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/mobile.v2.fenix.nightly.latest.armeabi-v7a/artifacts/public/build/armeabi-v7a/target.apk)
33 * [x86_64 devices (64 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/mobile.v2.fenix.nightly.latest.x86_64/artifacts/public/build/x86_64/target.apk)
34 * [x86 devices (32 bit; Android 5+)](https://firefox-ci-tc.services.mozilla.com/api/index/v1/task/mobile.v2.fenix.nightly.latest.x86/artifacts/public/build/x86/target.apk)
38 The data migration work is tracked on the following project board:
39 https://github.com/orgs/mozilla-mobile/projects/40
41 * **2019-09-05** - The first [migration builds](https://tools.taskcluster.net/index/project.mobile.fenix.v2.fennec-production/latest) are available now. A Firefox for Android (release) installation can be replaced with them. No actual migration code is in those builds yet. The replaced build is a "clean" Fenix installation.
42 * **2019-10-22** - First iteration of migration code to migrate history, bookmarks and open tabs landed in builds.
43 * **2019-11-02** - Firefox Account users remain logged in after migrating to Fenix.
47 When working on migration code it is helpful to have a local Fennec build and a local Fenix build that can replace the Fennec build. The following manual setup is needed to achieve that.
49 In the example commands below, we assume you are replacing a **Fennec Nightly** build with a **Fenix Nightly** build.
53 Download the latest version of Fennec:
55 - [ARM64/Aarch64 devices (64 bit; Android 5+)](https://archive.mozilla.org/pub/mobile/nightly/latest-mozilla-esr68-android-aarch64/)
56 - [ARM devices (32 bit; Android 5+)](https://archive.mozilla.org/pub/mobile/nightly/latest-mozilla-esr68-android-api-16/)
57 - [x86_64 devices (64 bit; Android 5+)](https://archive.mozilla.org/pub/mobile/nightly/latest-mozilla-esr68-android-x86_64/)
58 - [x86 devices (32 bit; Android 5+)](https://archive.mozilla.org/pub/mobile/nightly/latest-mozilla-esr68-android-x86/)
60 Strip out the original signature:
63 zip --delete fennec.apk "META-INF/*"
66 Re-sign the APK with your own debug key (that will also be used later for Fenix):
69 jarsigner -verbose -keystore ~/.android/debug.keystore -storepass android -keypass android fennec.apk androiddebugkey
72 You can now install this APk that is ready to be used for migration:
75 adb install fennec.apk
80 In the `app/build.gradle`, add the following line in the correct scope to sign your app with the same debug key used on the Fennec APK:
86 signingConfig signingConfigs.debug
92 Follow the build instructions in the [README](https://github.com/mozilla-mobile/fenix/blob/main/README.md) to get a Fenix build setup.
94 Now select the `geckoNightlyFennecNightly` build variant in Android Studio and deploy it. This build should have replaced your Fennec build now.
98 When working on migration code that lives in the [Android Components repository](https://github.com/mozilla-mobile/android-components) it can be helpful to replace a local Fennec build with the sample browser (instead of Fenix). The following setup is needed for that.
100 Add the sharedUserId to the AndroidManifest.xml of sample browser:
103 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
104 xmlns:tools="http://schemas.android.com/tools"
105 android:sharedUserId="org.mozilla.fennec_$USERNAME.sharedID"
109 Modify the application id in `build.gradle` of the `samples-browser` module and use a versionCode that is higher than your Fennec build (`2100000000` is the highest allowed version code and therefore should always work).
113 applicationId "org.mozilla.fennec_$USERNAME"
115 versionCode 2100000000
120 Click on "Sync Project with Gradle Files" and deploy the sample browser. This build should have replaced your Fennec build now.
122 ## Emulator snapshots
124 When testing migration code the following process has to be repeated multiple times:
126 * (1) Uninstall an already existing Fennec/Fenix installation
128 * (3) Use Fennec to create the necessary data for testing the migration
132 Steps (1) to (3) can be quite time consuming. Emulator snapshots can help with that:
134 * Launch an emulator and perform steps 1 to 3. You may need to modify your Fennec build to create an X86 build for your emulator (target `i686-linux-android`).
135 * Click on the three dot menu in the emulator toolbar and select "Snapshots". Press the "Take Snapshot" button. If needed give you snapshot a descriptive name in case you will need to have multiple "test snapshots".
136 * With the "Play" button you can always reset your emulator to that state and repeat the migration process.