To resolve the "No Devices Found" error in RKDevTool, the most helpful "feature" is a systematic connection check. This error typically stems from missing drivers, a faulty USB connection, or the device not being in the correct boot mode (Loader or Maskrom). 1. Verification of Drivers The most common cause is a lack of the ALLNET GmbH Install Drivers : Download and run the RK Driver Assistant

One device. UID: 12345678.

  • Open Device Manager
  • If the device shows as “WinUSB” or “ADB Interface”, uninstall the driver (check “Delete driver software”).
  • Reinstall Rockchip driver (steps 2–3 above).

With your device plugged in (and the button held), open Device Manager on your PC.

  • Normal boot: Boot1: 2024-03-01... → Loading firmware...
  • Corrupt bootloader: ERROR: No valid boot code → Device hangs.
  • Failed DRAM init: channel 0 training failed → RAM issue.
  • Dead NAND: mmc send cmd 1 error → eMMC chip is dead.
  • Right-click RKDevTool.exe → Run as administrator.
  • Without admin rights, the tool can’t access low-level USB drivers.

The "No Devices Found" error in RKDevTool typically indicates a failure to properly enter MASKROM or LOADER mode, often requiring the use of the correct USB-C OTG port, proper drivers (v5.1.1), and running the tool as an administrator. To resolve this, ensure the board is connected while holding the maskrom button, try alternative data cables, and verify device detection in Windows Device Manager. For detailed troubleshooting steps, visit WOR Project.

“Different computer?”