To ensure a smooth process and avoid data loss, complete these preparatory steps:
Method 1: The Hardware Key Combination (No Computer Required)
Open the Command Prompt (Windows) or Terminal (Mac/Linux) on your computer.
If you are connected to a PC via command prompt, type: fastboot reboot Troubleshooting: Fastboot Mode Not Working
: Some variants may use Volume Down + Power to enter a menu first, where you then select "Fastboot".
Tap on 7 times continuously until a toast message says, "You are now a developer."