| Tool | Purpose | Download Link | | :--- | :--- | :--- | | ADB & Fastboot | PC-to-phone communication | developer.android.com/studio/releases/platform-tools | | TWRP | Custom recovery | twrp.me | | LineageOS 16.0 | Android 9.0 ROM | download.lineageos.org (old devices in "Archives") | | OpenGApps | Google apps | opengapps.org (Select ARM → 9.0 → Pico) |
However, if you have a beloved classic phone (Nexus 5, Galaxy S4, Xperia Z1) that you use as a , then go for it. The feeling of seeing Android 9.0’s gesture navigation on a screen that last saw KitKat’s blue-and-white UI is genuinely magical. upgrade android 4.4.2 to 9.0
Upgrading your device to Android 9.0 comes with some risks, including: | Tool | Purpose | Download Link |
You will see the Android 9.0 setup wizard. Connect to Wi-Fi, sign into Google, and restore minimal apps. – your 2013 eMMC storage will choke. Connect to Wi-Fi, sign into Google, and restore minimal apps