(by Datastream33 on XDA) – This is your best bet:
does have a widely supported, stable "custom ROM" (like LineageOS or Pixel Experience) that allows for an easy flash-and-go experience. Locked Bootloader: Unlike the 2018 (8th Gen) Fire HD 8, the
| Feature | Fire OS (Stock) | Custom ROM (LineageOS) | | :--- | :--- | :--- | | | Laggy; burdened with ad-ware | Fluid; debloated interface | | App Compatibility | Limited to Amazon Appstore | Full Google Play Store access | | Background Processes | High (Amazon Services) | Low (User configurable) | | Privacy | High telemetry | Standard Android telemetry | | Battery Life | Moderate | Improved (due to debloating) |
Once you set up LineageOS 18.1, you will feel the difference immediately.
This is a powerful Windows/Linux tool developed by XDA members that modifies the device via ADB (Android Debug Bridge) without needing to unlock the bootloader. It effectively gives you 95% of the "stock Android" experience without the risk of bricking.