Upgrade Android 4.4.2 To 9.0 -
Go to Settings > About Phone and find the "Model Number." (e.g., GT-I9505 for a Galaxy S4). This is crucial. Flashing software for the wrong model will destroy your phone.
Upgrading from Android 4.4.2 (KitKat) to Android 9.0 (Pie) is a major jump; official support depends on your device and manufacturer. If no official update exists, you can often install a custom ROM (e.g., LineageOS) — but that requires unlocking the bootloader, installing a custom recovery, and flashing a ROM, which can void warranty and risk bricking the device. upgrade android 4.4.2 to 9.0
After flashing, tap (optional but recommended). Go to Settings > About Phone and find the "Model Number
Once you see the familiar “Welcome” screen, you have succeeded. Now: Go to Settings >