Redmi 4/4x ROM 8.1 OFFICIAL Cardinal-AOSP
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Hi, all Ranjan from Ghost team here now present to you our 1st Official Rom 8.1 with No bug at all its maintained by one of our teammate Vimal Balaji. now lets start and jump to the topic.
Now thanks to our teammates, friends, tester and most imp our hatter too who think we are nothing. I think there is nothing wrong to give proper credit to All who help us in building this ROM and make OREO dreams comes True!!!!

Redmi 4/4x ROM 8.1 OFFICIAL Cardinal-AOSP

cardinal aosp rom 8.1 worldgiz

Special thanks to– @AbhirajS, Bishnu(@DareD3vil),@Nikesh001, @hridayhs,@haran2003,@highwaystar,@EdvardoNoyer and whoever helped us to bring up Oreo, please forgive me if I forgot any name, message me personally and I will update the post with proper credits. And I would like to thanks our all hardcore tester too, they are always ready to boom and notify each and every single bug of oreo builds, thank you guys, without you bugless oreo was not possible.

Thanks to – Potlapalli, Leo Messi, Yousef Algadri,manuraj Gowda, DucHai, Ashok, Mk Virus, Louise Lee, subh, suvam Das, Ayush Kakkar etc and sorry if a name is not in list forgive me for that.

Now jump to the main part to discuss ROM, Bugs, Glitch etc so let’s start friend.

I am happy to announce our 1st OFFICIAL Cardinal-AOSP  ROM  BASED ON ANDROID ROM 8.1 OREO 

      NOTE or GHOST Developer not responsible for any kind of damage or any mess. we are not forcing you to do this .this rom is tested by 20+ Tester more than 20+ times so you can feel safe while flashing. if anything goes wrong you can drop your problem in the comment section as well as report in our Telegram channel.

Read the full POST! Be Respectful of every alternative and don’t arouse ETAs, it’s considered as being rude!

You can check these post to 

AospExtended ROM

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Xiaomi Redmi 4/4x Gets Nitrogen OS ROM Based On Android 8.1 Oreo By Ghost

Latest Android update Mokee oreo for Redmi 4 and Redmi 4x

Latest Android update ElixirOS 8.1 for xiaomi redmi 4 and xiaomi redmi 4x

AospExtended ROM Oreo For Redmi 4/4x(Santoni)8.1. By Ghost

Solution for Text to Speech(Female for English) In All Redmi/MI Phones


Cardinal-AOSP  ROM 8.1 could be a Custom ROM that was initially supported AOSPB, then we tend to modified our mind and rebased it to AOSP-RRO, to induce higher compatibility with most of the devices. And currently, we tend to square measure supported AOSP on oreo. the most aim of this ROM is to bring stock AOSP expertise the maximum amount as potential whereas maintaining performance, smoothness and sensible battery backup. I hope that you will all love this project, and help us, form it even a lot of higher. Meanwhile, all of our sources are publically offered on our Github. we tend to conjointly do own a Google+ Community, wherever you’ll be able to…. uhm… you know, do what all others do at forums and communities! Hope you get pleasure from your keep and like our work on Cardinal-AOSP.

Redmi 4/4x ROM 8.1 OFFICIAL Cardinal-AOSP

      what is special in OFFICIAL Cardinal-AOSP

• QS Tiles
• Cardinal logo on status bar   • Signature spoofing support for MicroG  • Comes with Pixel/Stock theme
• Comes with Margarita substratum theme • Reboot to recovery/bootloader in power menu • Ringtones  from Pixel
• Allow lower temp for night light • Accept All files over Bluetooth option • Volume Adjustments Sound
• Add SystemUI Tuner features into Wings • Disabled RescueParty • Enable Custom shapes option on Launcher3
• Enable Developer option by default • Launcher3 Gestures • Screenshot sound toggle • Reset Battery Stats• Ship with Jelly browser • L/R IME/Music Cursors• VoLTE icon toggle• DND Tile enhancements• HSPA+ icon
• Add/Remove tiles with one click
• Wake on Plug• Sensor block-per package• In call vibrations

*Status Bar*
• Secured QS• QS title visibility• Custom QS layout configuration• Headsup toggle• Headsup whitelist/blacklist
• IME Selector notification toggle• Battery light/Notification light options• Network traffic meter• DT2S on Statusbar

• Volume button wake• Volume button music control• Dynamic software Navigation bar/Hardware keys toggle
• Pixel Navbar animation• Accidental touch• Button backlight controls• Custom Key rebindings• Option to Disable Home key when ringing

*Lock Screen*
• option to hide lock screen shortcut on secured lockscreen• Lockscreen media art toggle• Option to unlock with FP directly after reboot• Fingerprint Authentication vibration toggle

• Clear all FAB option


      Changelog 29 MAY

Upstreamed to 3.18.110
Merged Latest Caf Tag
Eas Added (Thanks to @wuffz)
HALs updated to the latest CAF tag 
Fixed Vilte (Video Call over LTE) (Thanks to @Nikesh001) 
Fixed Data Call bug for dual sim (Thanks to @Nikesh001) 
Update Oreo Blobs from Nokia 6 8.1 & Remove Unused Blobs (Thanks to @riteshsaxena)
Fixed Noise Cancellation 
Improve Performance


You found any Bug report us on telegram

You will get all latest Info on this channel kindly join –

      How to install CARDINAL Rom 8.1, NOOB friendly

We recommend to take complete backup and proceed. Make sure you have Oreo supported TWRP.

Step 1- Download Cardinal Os Rom 8.1, Gapps (if you already downloaded than no need to download GApps again)

Step -2 Download firmware v35(UPDATED) –Click Here

Step -3 Now you are ready to go to TWRP (you can switch off phone then press all key together for TWRP)

Step -4 Now press Wipe – Advance wipe and select System, Dalvik, Cache, Data and swipe to wipe.

Step – 5 Flash firmware v35 if It is Necessary (if You are coming from N based Roms else no need to flash )

Step -6 Flash ROM, Gapps by Selecting Install when it Shows Sucess than wipe Dalvik, cache again press reboot

Step – 7 Wait now it will take some time to Boot in Cardinal Rom 8.1, Enjoy !!!!


*AOSP Official Rom 8.1 Builds [29 May]:  Download
*AOSP Official Rom 8.1 Builds [16 April]:
*Twrp Recovery for Oreo – Click here
*Gapps Official – Click Me [Select arm64/8.1/nano, pico, stock, full your wish]



ROM OS Version: 8.x Oreo
Based On: AOSP

Version Information
Status: stable

Created 2018-05-29
Last Updated 2018-05-29

contact to Our developers  on Telegram – @DareD3vil @AbhirajS @Nikesh001@Crazy_launda @AmarjeetVirk @irfanam @Mayank20 @MkVirus 

website owner- @tecgoal

      Screen Shots


  1. Bugs:
    1.Adding call not works
    2. There is some problem while accepting and rejecting calls.
    3. Double tap to wake doesn’t works.

    Must have additions:
    1. There should be more ways to use Ambient display like Motorola does with Moto display. This would be a great feature.
    2. Screen Recording

    Please add the 1st must have addition. Please!!!!!

    • there is no pin for twrp, its because of miui, miui encrypt your device and when you flash any custom rom it incrypt twrp
      sol- format everything including internal once than it never happen again

  2. Hi Dev! Nice ROM but, im experiencing ping drop unstable connection speed on online games, unstable downloading speed.. Only in this Rom.. I installed invicta, rr problem dint persist.. Thanks dev

  3. link please, i want to try the latest build of this rom, i’ve been waiting the link since the previous May build.

  4. Why every time i try to flash rom,have password for encryption? So when i done flash,its stuck at logo and cannot log in.
    What should i do?sorry I’m newbie, please help me asap


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