# Reboot to bootloader adb reboot bootloader fastboot -w Flash a custom recovery (TWRP) fastboot flash recovery twrp.img Reboot the device fastboot reboot Debugging the "Unknown" Issues Ever seen adb devices show unauthorized ? The RSA fingerprint changed. Revoke USB debugging authorizations on the device (Developer Options) and restart the ADB server:
Today, we are going to strip away the GUI and get our hands dirty with adb , fastboot , and systrace . When you install the Android SDK, you download several packages. The most critical is Platform-Tools . This package updates backward (meaning newer tools work with older Android versions) and includes the utilities necessary for a device to communicate with a computer. android_sdk platform tools
adb restore backup.ab fastboot is powerful and dangerous. You use this when your OS is so broken that ADB won't even start (e.g., bootloop). # Reboot to bootloader adb reboot bootloader fastboot
# Typical location export PATH=$PATH:$HOME/Android/Sdk/platform-tools echo 'export PATH=$PATH:$HOME/Android/Sdk/platform-tools' >> ~/.zshrc When you install the Android SDK, you download
Only flash the exact firmware meant for your device model.
Next time you test a feature, don't tap the icon. Open your terminal and launch it via adb shell am start . Once you feel that speed, you'll never look back. Do you have a favorite adb command that saves you hours? Drop it in the comments below!
To check if fastboot sees your device (Volume Down + Power on most phones):