Octavi OS v2.9 Official on Samsung Galaxy A50 Android 11 GSI ROM

September 21, 2021 | By androidhowto@youtube | Filed in: Custom ROM.

How to Install Octavi OS v2.9 Official on Samsung Galaxy A50 Android 11 GSI. Maintained by Yilliee.  Changelogs: Merged r43 September security patch, Added Statusbar beighness control gesture, Added notch city from POSP (3 mode cutout handler), Added Media notification background for QS media player, Added Cloudflare DNS as a private DNS provider, Added a network permission group for Internet, Added a special runtime permission for sensors, Added seekbar or Statusbar padding (no more icon cropping), Miscellaneous Changes & Improvements. Use at your own risk, I’m not responsible for bricking your device.

Download and Term

  1. Your phone must be Installed Custom Recovery for Android 10. If not, you can read TWRP Recovery for Samsung Galaxy A50 SM-A505F Android 11
  2. Download OctaviOS-v2.9-arm64_bvN-20210918-Official.img.xz ( extract it to get img file, use 7-zip )
  3. Download latest open_gapps-arm64-11.0-nano-20210821.zip or latest ( if necessary )
  4. Copy ROM OS img and GApps to SD Card (recommended)

How to Install Octavi OS v2.9 on Samsung Galaxy A50:

  1. Enter TWRP Recovery Mode: Turn power off, Connect the phone with a USB cable, Press and hold Volume Up + Power Key, when Galaxy Logo appears release power key only, keep pressing volume up until TWRP Recovery Mode Appears.
  2. Select Wipe – Format data ( type “yes” and confirm )
  3. Select Wipe – Advanced wipe ( select “Dalvik, Cache, System” ) – Swipe to wipe
  4. Select Install – Install Image – OctaviOS-v2.9-arm64_bvN-20210918-Official.img – select “System Image” and Swipe to confirm flash
  5. Select Reboot – System

Install GApps if necessary

  • Enter TWRP Recovery Mode: Turn power off, Connect the phone with a USB cable, Press and hold Volume Up + Power Key until TWRP Recovery Mode Appears.
  • 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 – select open_gapps-arm64-11.0-nano-20210821.zip Swipe to confirm Flash
  • Select Reboot – System

Rooting if necessary

  • Enter TWRP Recovery Mode: Turn power off, Connect the phone with a USB cable, Press and hold Volume Up + Power Key until TWRP Recovery Mode Appears.
  • Select Reboot to Recovery
  • Connect Phone to Internet
  • Install Magisk app and Open it. Magisk will ask to do additional setups. Let it do its job and the app will automatically reboot your device.
  • Done

Watch this Video!

Octavi OS v2.9 Official on Samsung Galaxy A50 Android 11 GSI ROM
Watch this video on YouTube.

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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