: Used to install or "flash" official or custom firmware onto devices. Examples include Odin for Samsung or SP Flash Tool for MediaTek-based devices.

: For these tools to work, specific USB drivers (ADB, VCOM, CDC) must be installed so the PC can communicate with the phone's hardware. Modern Alternatives

: One of the most famous tools for various chipsets, providing extensive servicing options for mobile repair shops.

: Most 2017-era tools were designed for Windows 7 or Windows 8. Running them on Windows 10 or 11 often requires "Compatibility Mode" or specific legacy drivers.

: A powerful tool for MediaTek (MTK) and Spreadtrum devices, used for reading codes, repairing IMEI, and formatting.

: Specialized in bypassing the Google Account Lock (Factory Reset Protection) on devices after a hard reset. Tools like the FRP Bypass APK (contextual reference for modern SDK equivalents) were used to regain access to handsets.

Historical technical solutions for Android servicing generally fell into several key functional categories:

: Tools that allowed technicians to reset screen locks without necessarily wiping user data, often through custom recovery modes. Popular Legacy Tools Included