PREMIUM SUPPORT • INSTANT FIXES

Troubleshooting Center

Common errors, instant solutions, and device-specific fixes. Everything you need to get unstuck fast.

adb devices shows nothing / no devices
Most common issue
1. Try different USB-C cable (must support data)
2. Try different USB port (rear ports on PC are better)
3. On phone: Settings → Developer options → Revoke USB debugging authorizations
4. Windows: Download Universal ADB Driver
5. Linux: sudo apt install android-tools-adb
6. Restart phone + computer
adb: command not found
Linux: sudo apt install android-tools-adb android-tools-fastboot
macOS: brew install android-platform-tools
Windows: Download Platform-Tools from developer.android.com and add to PATH
fastboot: command not found / permission denied
sudo apt install android-tools-fastboot
On some Linux: sudo usermod -aG plugdev $USER then logout/login
fastboot devices shows nothing
• Boot phone into bootloader: adb reboot bootloader
• Use different cable
• On Windows install proper drivers
• Try fastboot -i 0xXXXX devices (check vendor ID)
Samsung M Series - Bootloader locked
This is normal for most M series models.
Realistic options:
  • Root with Magisk (if possible via Odin)
  • Install Kali NetHunter via Magisk module
  • Do NOT try Ubuntu Touch or postmarketOS
  • Check XDA for your exact model (M31/M32/M33/M51)
fastboot flashing unlock fails
1. Make sure OEM unlocking is enabled in Developer options
2. Some devices require official unlock tool from manufacturer
3. Samsung: Often permanently locked on M series
4. Try fastboot oem unlock instead
Phone says "Unlock bootloader" but nothing happens
Some devices show warning for 5-10 seconds. Wait and press volume up to confirm.
Phone keeps disconnecting during flash
→ Use original or high-quality USB-C cable
→ Avoid USB hubs and long cables
→ Disable USB selective suspend in Windows power options
Downloaded .sh script won't run
chmod +x installos-*.sh
./installos-*.sh
On Windows: Use Git Bash or WSL
Phone is stuck / bricked after flashing
Do not panic. Most cases are recoverable:
  • • Try holding Power + Volume Down for 30 seconds
  • • Boot to recovery or download mode
  • • Use manufacturer tools (Odin for Samsung, MiFlash for Xiaomi)
Still stuck?
1. Double-check that you followed the exact steps generated for your device.
2. Join our community or check XDA for your exact model + "InstallOS".
3. Make sure you are using the latest Platform Tools from Google.
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