Step 1:

Setup Requirement

Step 2:

Step 3:

Before proceeding, make sure the following is enabled on your phone:

  • Boot into Castrum OS
  • Go to: Settings → About phone
  • Scroll to the bottom
  • Tap Build number 7 times to enable Developer Options
  • Go to: Settings → System → Developer options
  • Enable USB debugging

This process may take a few minutes. Do not disconnect the device.

  • Connect your phone to the computer via USB
  • ⚠️ A confirmation pop-up will appear on your phone — you must tap “Allow” to proceed
  • (Optional) Enable “Always allow from this computer” to avoid repeated prompts
Developer options and USB debugging toggles