Corvus OS v16.8 OFFICIAL for Poco X3 NFC (Surya) Android 11

August 20, 2021 | By androidhowto@youtube | Filed in: Custom ROM.

How to Install Corvus OS v16.8 Avalon OFFICIAL for Poco X3 NFC (Surya) Android 11. Corvus is popular as Gaming ROM and support most android devices. Corvus OS a ROM with many useful & required Customizations. Corvus OS is based on Android Opensource Project (AOSP). This Corvus OS ROM is maintained by Sambit. Features: Theme, Notification, Lockscreens, Status Bar and Display. Use at your own risk, I’m not responsible for bricking your device.

Download and Terms

  1. Your phone must be Installed Custom Recovery. If not, you can read How to Install TWRP 3.5.2 Xiaomi POCO X3 NFC – Permanent
  2. Download Corvus_v16.8-Avalon-surya-18082021-OFFICIAL-0949.zip
  3. Download fw_surya_miui_SURYAGlobal_V12.0.1.0.RJGMIXM_95126259ea_11.0.zip
  4. Download FlameGApps-11.0-basic-arm64-20210808.zip or Open GAPPS ( if necessary )
  5. Download Magisk: Magisk-v23.0.apk or latest rename it to Magisk-v23.0.zip ( if necessary )
  6. Copy ROM to SD Card ( Recommended )

Corvus OS v16.8 Install Instructions on POCO X3 NFC:

  1. Enter TWRP Recovery Mode: Turn Power off, Press and Hold Volume Up + Power key, When POCO logo appears release Power key only, keep pressing Volume Up until TWRP Recovery appears.
  2. First Important Step is to Backup (though depends on you if you wanna be safe or no )
  3. Select Wipe – Advanced ( Dalvik, Cache, Data ), Swipe to wipe
  4. Select Install – select fw_surya_miui_SURYAGlobal_V12.0.1.0.RJGMIXM_95126259ea_11.0.zip, Swipe to confirm Flash
  5. Select Install – select Corvus_v16.8-Avalon-surya-18082021-OFFICIAL-0949.zip, Swipe to confirm Flash
  6. Select Wipe – Format Data – type “yes” and confirm ( Optional )
  7. Select Reboot – System
  8. Setup the Phone

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 Install – select FlameGApps-11.0-basic-arm64-20210808.zip, Swipe to confirm Flash
  • Select Reboot – System

Root Instructions if necessary

  • Enter TWRP Recovery Mode: Turn Power off, Press and Hold Volume Up + Power key, When POCO logo appears release Power key only, keep pressing Volume Up until TWRP Recovery appears.
  • Install Magisk-v23.0.zip
  • Reboot to System
  • 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!

Corvus OS v16.8 OFFICIAL for Poco X3 NFC (Surya) Android 11

Enter TWRP Recovery

You can enter TWRP recovery with 2 methods: via adb command by type “adb reboot recovery” and by pressing keys combinations ( Turn power off, press and hold volume up + Power key, when POCO logo appears release power key, keep pressing volume until TWRP recovery appears )

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. Make sure to backup your important data before root it.


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