Firebase Compatibility with Unity 2020.1 and Later

Firebase reported that Unity 2020.1’s redesigned build system disrupted several Firebase Unity SDK integrations that depended on earlier build-process assumptions, affecting AndroidX and Jetifier configuration, transfer of google-services.json data, and Crashlytics-generated components, potentially causing launch crashes. While recommending Unity 2019 for the most reliable experience until an official fix is released, Firebase provided manual Gradle-based workarounds for Unity 2020.1: developers must generate custom Gradle templates, ensure Firebase’s generated google-services.xml resource is included, enable AndroidX and Jetifier in gradleTemplate.properties, and optionally force-resolve Android dependencies through External Dependency Manager for Unity. Most Firebase services, including Analytics, Remote Config, and Authentication, should then work, while Crashlytics requires additional project-level and launcher Gradle changes to add and apply its Gradle plugin. Firebase acknowledged the disruption, stated that it is developing a permanent solution and future process improvements, and directed developers with unresolved issues to its Unity GitHub repository or support channels.

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