Octavi-OS 11 Android 11 for Samsung Galaxy A50

January 4, 2021 | By androidhowto@youtube | Filed in: Custom ROM.

How to Install Octavi-OS 11 Android 11 on Samsung Galaxy A50. Octavi-OS 11 is based on AOSP, inspired by Google Pixel and brought to you by igors1974@sourceforge.net. Octavi-OS 11 comes with ROM OS Android 11 Q offers more features, light and FingerPrint under display does not worked, MTP worked with Quantum kernel. This ROM Required: Installed TWRP Recovery. Version Information Status: Stable GSI ROM Octavi-OS-11-arm64-ab-GApps ( ARM64-AB ). Use at your own risk, I’m not responsible for bricking your device.


  1. Your phone must be Installed TWRP Recovery for Android 10. If not, you can read How to Flash TWRP on Samsung Galaxy A50 SM-A505F Android 10 Q.
  2. Download Octavi-OS-11-arm64-ab-GApps.img.xz ( extract it to get img file, use 7-zip )
  3. Download open_gapps-arm64-11.0-nano-20200911-UNOFFICIAL.zip ( if necessary )
  4. Copy ROM and GApps to SD Card ( Recommended )


Some Custom ROM does not need installed custom kernel. If you faced boot loop on Samsung Galaxy logo, it may be you need to flash the custom kernel. ( Lineage / Havoc does need custom kernel, Resurrection Remix / Evolution X needs installed custom kernel )

How to Install Octavi-OS 11 on Samsung Galaxy A50:

  1. Enter TWRP Recovery Mode: Turn power off; Press and hold Volume Up key + Power key, when samsung logo appears release power key only, keep pressing volume up until TWRP recovery appears
  2. Select Wipe – Format data ( type “yes” and confirm )
  3. Select Wipe – Advanced wipe ( select “Dalvik, Cache, System” ) – Swipe to wipe
  4. Copy image file to phone, ignore this if you have copied to SD card
  5. Select Install ( If image file in SD Card: Select Storage – Micro SD card – OK ) – Install Image – select Octavi-OS-11-arm64-ab-GApps.img – select “System Image” and Swipe to confirm flash
  6. Select Reboot – System
  7. Setup the Phone

Install GApps if necessary

  • Enter TWRP Recovery
  • Select Wipe – Advanced Wipe ( select “System” ) – Repair or Change File System – Resize File System – Swipe to Resize
  • Select Mount – ( select “System, Vendor” ), Back to home
  • Select Install ( If file in SD Card: Select Storage – Micro SD card – OK ) – select open_gapps-arm64-10.0-nano-xxxxxxxx.zip Swipe to confirm Flash
  • Select Reboot – System

Rooting if necessary

  • Enter TWRP Recovery
  • Select Reboot – Recovery
  • Connect the phone to Internet wait for a moment
  • Install Magisk Manager. Magisk Manager will ask to do additional setups. Let it do its job and the app will automatically reboot your device.
  • Done! You can use Root Checker to check it, Enjoy!


  • Enter TWRP Recovery
  • Select Install ( If file in SD Card: Select Storage – Micro SD card – OK ) – select Quantum_A505F-V2-GSI-Magisk-Patched.zip, Swipe to confirm Flash
  • Reboot to System or Recovery ( Root )

If you want to uninstall this custom ROM and back to stock ROM, just flash the stock ROM to your device. Flashing stock ROM will also uninstall TWRP Recovery and it will back to stock Android Recovery.

Notes / Warning!

  1. Use at your own risk, I’m not responsible for bricking your device.
  2. Using the incorrect file may brick your device.
  3. If your target device has a custom firmware flash counter, Rooting will trigger it. If you’re lucky, Triangle Away has support for your device and can be used to reset the counter.
  4. If you have a KNOX-enabled device, flash custom rom and Rooting will trip the KNOX WARRANTY VOID status!
  5. If your device storage is encrypted, Rooting will wipe your data !
  6. If you have locked bootloaders, flashing one of these will probably brick your device – with the exception of Nexus devices, which will usually automatically “OEM unlock” and wipe your data !
  7. Make sure to backup your important data before root it.

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