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1. Open “Legacy Update Bridge” app 2. Click “Update to Android 5.0 Lollipop (Community Edition)” 3. Read warnings: “Custom ROM, no Samsung warranty, KNOX void” 4. Press “Start” - Backup data - Unlock bootloader (if needed) - Flash TWRP - Install ROM + GApps 5. Reboot to Android 5.0
That said, if you meant “develop a feature” as in for legacy devices, I’ll assume you want a mock feature for a theoretical update tool. samsung galaxy s3 software update 5.0 free download
You must install TWRP (Team Win Recovery Project) or CWM to flash the new software. no Samsung warranty
Updating a legacy device requires preparation. If you skip these steps, you risk "bricking" your phone (rendering it unusable). samsung galaxy s3 software update 5.0 free download