[ROM][12.0][cepheus] ArrowOS [Twelve][STABLE][OFFICIAL][2021/10/31] by Lamjiidii1

[lamjiidii1]

ArrowOS
​

ABOUT
ArrowOS is an AOSP/CAF based project started with the aim of keeping things simple, clean and neat.

Website: https://arrowos.net
Telegram: Channel | TG Portal/Links
Github: https://github.com/ArrowOS
Code Review: review.arrowos.net
E-mail: arrowos.contact
Blog: blog.arrowos.net

Checkout more documentation at (maintainership/contributing): Check this out

WHAT WORKS?

• Almost everything
• SELinux is enforcing
• WiFi
• Audio
• RIL
• GPS
• Camera
• Flashlight
• NFC
• Fingerprint on display
• Vibration
• Bluetooth
• FM Radio
• Cast
• Any other thing that is not listed in the "What doesn't work" list

WHAT DOESN'T WORK?

• You tell me

Be sure to include a log : check how to

Support group

• ArrowOS channel for cepheus

HOW TO INSTALL

• Reboot to recovery
• Wipe System , Cache, ART Cache and Data
• Flash the ROM
• Flash firmware
• Flash any addons (GApps if needed, Magisk...)
• Format data if you are encrypted
• Reboot

HOW TO UPDATE

• update via OTA is not available yet, but will be as mush as possible
• Reboot to recovery
• Flash the new ROM
• Flash any addons that you were using previously (GApps, Magisk...)
• Reboot

DOWNLOADS
Click here to Download
Tip: choose Arrow version, choose build type: "GAPPS" or "VANILLA" to download.

Read our blog article/post about:
* HOW-TO report a bug
* GAPPS and VANILLA variants
* Checking build integrity

ROM Source: https://github.com/ArrowOS
Kernel Source: https://github.com/EcrosoftXiao/kernel_xiaomi_cepheus

Donation:
Of course, if you like this work, or you see me Did hard work and an effort worthy of thanks here my PayPal https://www.paypal.me/lamjiidii1
Thanks in advance
XDA:evDB Information
ArrowOS 12 for cepheus, ROM for the Xiaomi Mi 9

Contributors
lamjiidii1
ROM OS Version: Android 12
ROM Kernel: Linux 4.x
ROM Firmware Required: MIUI 12.5.0.4
Based On: AOSP

Version Information
Status: Stable

Created 2021-10-31
Last Updated 2021-10-31

 

[Tyrannis78]

Thanks,is excellent new, I was waiting impatiently for it, some screenshots, please.

 

[djzelee]

What about battery life? Is it better than on other A11 versions?

 

[03jack]

I'm on latest MIUI Global firmware: 12.5.1
Above it is written that it's required MIUI 12.5.0.4
Is it ok to flash this ROM on latest MIUI Global 12.5.1? Nowadays it's not so easy and safe to rollback to a previous Global version, so if possible I would flash directly on 12.5.1...

 

[lamjiidii1]

I'm on latest MIUI Global firmware: 12.5.1
Above it is written that it's required MIUI 12.5.0.4
Is it ok to flash this ROM on latest MIUI Global 12.5.1? Nowadays it's not so easy and safe to rollback to a previous Global version, so if possible I would flash directly on 12.5.1...

it's Okay
any A11 MIUI firmware should be fine

 

[lamjiidii1]

What about battery life? Is it better than on other A11 versions?

There is a little better battery backup in terms of the A12

 

[lamjiidii1]

Thanks,is excellent new, I was waiting impatiently for it, some screenshots, please.

Lamjiidii🇲🇦 in ArrowOS OFFICIAL GROUP FOR CEPHEUS

t.me

 

[djzelee]

How often/long do you have plan to do updates/security updates?

Thank you for answer and for your time.

 

[Tyrannis78]

Lamjiidii🇲🇦 in ArrowOS OFFICIAL GROUP FOR CEPHEUS

t.me

Ah,very good,and i see safetynet work.

 

[lamjiidii1]

How often/long do you have plan to do updates/security updates?

Thank you for answer and for your time.

I updating the ROM every month since April!!

 

[lamjiidii1]

Ah,very good,and i see safetynet work.

yeah, it's does

 

[Tyrannis78]

yeah, it's does

me no,i install magisk canary,any advice?

 

[Tyrannis78]

me no,i install magisk canary,any advice?

Nevermind,i activate magisk hide,now pass.

 

[tiri627]

Thank you very much I will try it ... It seems that it takes a long time in the first boot

Edito: Well, it does not go beyond the start animation, it takes too long, I have passed the dfe and it remains the same ... Any ideas?

I have done all the wipes including format data

 

[Ladap]

Can't add card to GPay. Magisk23, passes safetynet and magisk hide is on. Any1 was able to make GPay work?

 

[tramix32]

Is there any way to hide home button?
Rom working perfectly, no random reboots

 

[szwagierluki]

Thank you very much I will try it ... It seems that it takes a long time in the first boot

Edito: Well, it does not go beyond the start animation, it takes too long, I have passed the dfe and it remains the same ... Any ideas?

I have done all the wipes including format data

I have the same ... how to install?

 

[tramix32]

I have the same ... how to install?

Use this recovery 11.3
wipe system dalvik data and cache
flash Arrow os
Then flash firmware, I used 12.5.1.0 eea u can also use 12.5.4 china
I also formatted data partition cuz of encrypted partition on miui
Then reboot and wait 5 min to boot
Enjoy

 

[szwagierluki]

@tramix32 Thanks, it works

 

[gmarondel]

I tried this ROM too, but I have problems connecting und staying to Wi-Fi. Is this a Android 12 thing because on 11 I have no problems