Rkdevtool No Devices Found Link

A USB-to-TTL serial adapter (CH340, CP2102, FTDI) is essential.

The device must be in a state that RKDevTool can recognize, usually Radxa Docs Unbrick Rockchip RK3288 - Armbian forum rkdevtool no devices found

RKDevTool will not see your device if it is simply powered on and booting into its normal operating system. The device must be in a specific flashing state. A USB-to-TTL serial adapter (CH340, CP2102, FTDI) is

“What fixed it?”

💡 On Windows 10/11, you may need to disable driver signature enforcement temporarily: Shift + Restart → Troubleshoot → Startup Settings → Disable driver signature enforcement A USB-to-TTL serial adapter (CH340