Development [ROM][Android 12.1]StagOS 12.1[lemonadep][OFFICIAL][10/04/2022]

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Mar 27, 2015
This happened to me as well. How to revert. Reflashing StagOS doesn't fix the issue
I had to use MSM tool unbrick my phone. Was really hard to get into the modes I had to have it in.

After finally getting it to boot again I decided to try DerpFest because it had an update a day before and been using that.

DerpFest had some features/fixes Iwas missing/annoyed by on StagOS
- Translations ex.: "Fingerprint is called Pixel Indents or so in StagOS which was really irritating.
- Fingerprint unlock icon is positioned correctly
- On StagOS the "recent apps" occasionally crashed when pressing the button multiple times.
Had to restart the phone to get recent apps working again.
- You can invert the 3 button navigation which I couldn't find on StagOS.


New member
Feb 11, 2019
Has this rom Oneplus featurs like Dolby Atmos etc?
Mod Edit├┤Adding automated English translation├
You can flash Moto Dolby G Pro through Magisk, and the sound is almost the same as the Oneplus 9 Pro. If you think it's not enough, you can also flash ViPER4Android FX. You also need to flash the Audio Modification Library module to make them compatible with each other.
你可以通过Magisk刷入Moto Dolby G Pro,和Oneplus 9 Pro的音效几乎一样,如果你觉得不够,还可以刷入ViPER4Android FX,还需要刷入Audio Modification Library模块使他们互相兼容


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Senior Member
Jan 23, 2018
OnePlus 6T
OnePlus 9 Pro
Hey really liking the ROM, it's pretty great as far as my first impression can tell. I do have a major issue, and was hoping someone knows how to fix otherwise I'm going to have to switch to a new ROM: Bluetooth does not work. I can connect and play audio, but it's constantly cutting in and out and jittery. Haven't seen any report of that, more so the phone playing up when using Bluetooth but mine runs fine. It's just the Bluetooth that doesn't work. Anyone got any ideas? Alternatively, could someone explain to my how I could acquire a log? Never actually done that before and seeing as I run into these issues seemingly all the time, I should really be providing them. Thanks


Jan 5, 2022
Hello! Is it possible to make a icon change setting available? To use 3rd party icons? Would appreciate it!


Senior Member
Dec 19, 2007
This is the most refined custom ROM available for the OnePlus 9 Pro. I especially appreciate how everything just works. StagOS is my new daily driver, keep up the great work!


New member
Apr 29, 2022
Все еще нет новостей, связанных с камерой OOS?

Mod translation via GT: Still no news related to the OOS camera?

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    Hey another day another rom, that's what you might be thinking. but we at stag aim towards elegance. We are learners just like everyone out there, This is small project we have started which helps us learn every single day. Why Stag, you might question, my answer would be why not. After all Harry's patronus was a stag(pun intended). After having a couple of iterations, we still intend to stick to our roots, and keep refining what we have. With Android 12, Stag would still be aiming at an elegantly beautiful close to stock experience, that satisfies just the features and customisations you'd crave for (nothing more, nothing less), at the same time being blazing fast and silky smooth. You'll have to try it to believe it ;).

    ~Sic Parvis Magna~

    PS: for people wondering what sic parvis magna is, it translates to great endings from small beginnings, Something i picked up while playing a game.

    Credits where they are Due:

    Google(No explanation needed n this regards)

    Lineage(For starting of the custom rom war)

    * Your warranty is now void.
    * I am not responsible for bricked devices, dead SD cards,
    * thermonuclear war, or you getting fired because the alarm app failed. Please
    * do some research if you have any concerns about features included in this ROM
    * before flashing it! YOU are choosing to make these modifications, and if
    * you point the finger at me for messing up your device, I will laugh at you.

    This Build is a Beta Build, I will not be responsible for any kind of issues that might come up (while flashing)


    Gapps Build
    Pristine Build

    1. Chances of one random crash dump, just reboot if you face it
    2. App Auth using Face Unlock is Glitchy (Disable that option)

    1. Refresh rate switch
    2. Advanced Reboot
    3. Google Style monet made better thanks to ProtonAOSP and kdragon
    4. OOS Style Screen Recorder (Check qs tiles)
    5. Enforcing Build
    6. CTS Passes
    7. Unlimited Google photos backup (Fingerprint spoofed)
    8. CTS Passes sucessfully
    9. Face Unlock
    10. Less Annoying Notifications
    11. Working Gcam Pre Installed
    12. Ambient Display Gestures
    13. Off Screen Getures
    14. OTA Support

    And much much more, hope you all love the build.
    The build will be updated with bug fixes, but please don't ask ETA.
    Hope you like it.

    Bootloader Unlocked OnePlus 9 Pro
    Download recovery recovery-lemonadep-{date}.img and ROM zip from link above
    * Boot into bootloader
    * fastboot flash boot_a recovery-lemonadep-{date}.img
    * fastboot flash boot_b recovery-lemonadep-{date}.img
    * Reboot to recovery
    * Wipe data/ Factory Reset (Don't have to, if flashing over older Stag Build)
    * Sideload ROM
    * Reboot System


    The Proper due credits will be updated promptly, A huge thanks to the Lineage team and luk for bring up of OnePlus 9 Pro trees.
    A huge huge thanks to everyone who helped me test it, and develop:
    @chandu dyavanapelli for helping me with 12 bringup
    @aswin_a_s forhelping me deal with some huge issues, and stabilizing source (both rom and device)
    @Libra420T For having my back testing builds for stag os ever since A11, has been a super huge help.
    @YouLop09, @Jhoopes517, @Anonymouze for always being up for testing builds
    This release would have been super difficult without your help. Thanks a lot.
    I am extremeley sorry if I forgot someone, please dm me and I will promptly add your names.
    and currently this build is work in progress.




    Device Tree

    I work on this project as a hobby, and the money for the servers completely go out from my pocket.
    If you like my work it'd be great if you could:
    I would really appreciate it.
    Thanks and hope you enjoy the build

    ROM OS Version: Android 12.1
    ROM Kernel: Linux 5.4.x GKI
    Based On: AOSP

    Version Information
    Current Build Version: 12..1
    Build Release Date: 2022-04-10
    Changelog - 10/04/2022
    Hola guys long time no see, I know I promised monthly updates, but this one stretched far too long. The reasons include my college and android 12.1, which was a huge pain for me. But nevertheless here we are as stable as ever :)).. Ok as always
    Without further ado, I'll quickly list down the Changelog.
    Bad news first:
    1. We won't be having OOS camera anytime soon, Almost everything works except for rear normal photo, I need some help for fixing hence I am not including it in release builds. If anyone wants to try it out, feel free to pm me on telegram: @vjspranav.

    Ok that was it, everything further just keeps getting better.

    Device Specific
    * Tweaked the position of alert slider UI to make it feel more natural.
    * There was a small chance of sim not being detected on first boot, that has been fixed.
    * Issues with Verizon have been fixed. A few devices report it as working, a few report it as broken, so you can probably just try it out and let me know.
    * Wait must have been super annoying to see wrong charging info on Lock Screen, stuck at some 1hr 24 mins always. Now your phone works as it should have! Lock-screen charging info now shows correct estimates.
    * One of the biggest things, we no longer spoof our whole device as pixel, It detects as a oneplus and that helps a great deal with refresh rate in a few apps. And guess what!?
    CTS still successfully passes :)).
    * Added a bit of optimised charging support, although you can't control start stop percentage, your phone will still make sure to stop charging after a certain point. This will be adapted based on your usage.
    * Finally for everyone not being able to flash gapps on pristine build, Now you can do so and much more, The issue has been fixed. You can flash any and every apps package, be it micro, mini, full or stock.

    * Updated to Android 12.1 with April security patch, nothing but the latest and the best.
    * Added back charging animation ripple removed as part of 12.1 by Google.
    * Temporarily removed pocket lock as it is causing issues with device wake.
    * Added quick unlock with pin, many have asked for it.
    * Added option to enable always on display on charging only.
    * Added options to customise fonts and styles of status bar.
    * And a lot of under the hood changes thanks to both android 12.1 and also things we at stag do.

    As always, stag is as good as you last remember it if not better. I really hope you enjoy the build, and keep showing the love!!.


    Changelog - 25/02/2022
    Hello everyone, first of all, sorry for the delay of two months. I was super busy with life and had covid and college and stuff, secondly I am super happy and thrilled for the support everyone has been giving. I really hope you find this build and also the next exactly to your liking if not more :p.
    Without further ado, I'll quickly list down the changelog.

    Device Specific
    * Firstly The clock being overlapped by camera cut out, padding issue has been fixed.
    * On Lock Screen, you must've seen FP icon and charging info overlapping each other, this issue has also been fixed.
    * You must've loved the new unlock animations of A12 right?, But I'm sure everyone felt, the power button location of animation is off, guess what we've got that fixed too!
    * Ohh how could I forget, the dreaded ring issue, you won't have to face it anymore, every call you do will for sure have a ring giving you the peace of the call being connected and not having to face surprises.
    * We Added OnePlus Specific Settings, That let you select Hyper Touch, Edge touch etc.
    * Added Touch screen gestures, these are just love (we also support single tap for ambient display :))
    * Wake device on pick up, and a couple more ambient display options have been added.
    * Build comes with a pre installed working GCam on gapps build.
    * Wanted to share your battery to your friends? We have power share toggle added, you can wirelessly or through wire charge your friends phone or any chargeable device!

    If you think those are good, wait till you see, what the ROM brings :p
    * Updated to February patch.
    * Ever wanted to look at your phone, and just wanted it to unlock, no sweat, stag has the long awaited face unlock support now.
    * We have ota support now, all further builds can be downloaded and installed seamlessly over OTA.
    * Added an idle battery manager, this helps in saving idle battery.
    * Guess what ever wanted too listen to your class and YouTube, and wanted to decrease volume of your class/meeting only ? It's now possible, we have per app volume control, let your meeting run in silence and let the music begin!. (just kidding, we have the feature but don't miss out on classes :p)
    * I believe there was an issue with no default notification or ringtone in the last build, worry not we got you covered!
    * And remember that annoying screenshot sound ? I don't, because we don't have it anymore.
    * And And, Live translate works, Complete the initial setup and update all apps, and you're all set.
    * For all the enthusiasts, we have an amazing black theme, I know you are there and you are going to love it!
    * You scared your phone gets unlocked in your pocket? Well just a toggle and your phone can be smart enough to not unlock as long as it's in your pocket! with pocket lock.
    * You like your brightness slider at the bottom? Do not want to see the auto brightness icon ? Or don't want to see the bar at all ? Well you can do all of them now.
    * We have saner heads up now, if you are constantly annoyed by every notification pop up on your screen! Explore it to know it.

    * We are working on OOS Cam, we have potrait pro mode etc working, so expect to see the next build with OOS Cam :).

    and too much more, small changes and tweaks to make your experience the best possible!!.

    Due to the volume of changes, it is highly recommended to clean flash for the best experience.
    Will have the release today or tomorrow.
    Changeling will be posted soon.
    There are a lot of changes :))).

    Would highly recommend a clean flash.
    Screenshot 2022-04-11 at 01.36.04.jpg
    Guys for everyone waiting, Thank you very much for being here so far!
    Latest stag update is available now, Changelog can be found here:
    I Highly recommend clean flashing as it is a major upgrade.

    If you enjoy my work, please do consider:
    Hey! Thanks for the work!

    Possible to confirm that these items work?

    - Fingerprint sensor
    - Face unlock
    - 5G
    - Bluetooth?

    - Flash from A11 or A12?
    - Gcam or Oneplus Camera?
    - What is this recovery?
    - The battery is ok?
    - Stable enough to work with?

    Thank you ! :)
    1- Fingerprint Works
    2- Nope, no Face unlock (Yet)
    3- No one who tested reported 5g as broken, we don't have 5g at my place, but it should be working fine.
    4- Bluetooth works just fine, I have usedi it for music and calls didn't face issue.
    5- Gcam works, The one pre installed crashes, just uninstall it and install a compatible one, you'll be good to go.
    6- A11 to A12 flash should be fine, but you'll have to wipe which technically is a clean flash.
    7- It's just stock AOSP recovery based off on lineage recovery.
    8- I have been using it as daily driver, Personally felt the battery has been kind to me.
    9- And I prefer it over OOS

    Cheers! Hope you check it out
    ~sicp parvis magna~