: Insert the prepared card into your powered-off Rockchip device. Hold the Reset button while connecting power to trigger the auto-upgrade process.

: Click the path button to select your device's specific .img firmware file.

: Click Restore (or "Create") to format the card and write the bootloader and firmware images.

: Frequently shared via community firmware sites like China Gadget Reviews .

: Often bundled within specific device SDKs or developer wikis like the Firefly Wiki . How to Use the Tool

You can find various versions of this tool as .rar or .zip archives from these community-archived and developer sources: : Available as a direct archive on Archive.org .

: Insert your SD card into your PC and run SD_Firmware_Tool.exe as an Administrator .

: For direct USB flashing without an SD card, Windows users typically use RKDevTool (formerly AndroidTool), while Linux users use the command-line upgrade_tool .