Development [ROM][12L][16 Apr][Stable] DerpFest for OnePlus 9/Pro [OFFICIAL][Lemonade/Lemonadep]

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Samuel Holland

Senior Member
So would i be good to install or do i need to downgrade for the rom to work.
Sorry im kind of new to this.
Downgrade, I guess it couldn't hurt to try it while on oxygen os 12 if your gonna MSM back to oxygen 11. I would just make sure to have MSM tool set up and have the drivers installed, etc, for recognizing your device for adb, fastboot, and EDL, before attempting. That way if it doesn't boot, you can just MSM back, update to latest Oxygen 11 for both slots, and then it will work for sure.
Feb 14, 2021
hello!! would like to know if there is a pristine build anywhere to download, because I particularly hate gapps and dont need that trash on my phone.

thanks in advance

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    This is a small project based on AOSP. We try to be a platform for beginners and support the Custom ROM community with our own unique contributions as well. This ROM exists thanks to inspiration of AOSiP, Thank you! #StayDerped

    /* 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.


    GApps included!

    - Signed with release keys like stock
    - Google network stack
    - Google PSU support
    - Google APN's and CarrierConfig
    - Accent color, font, icon shape, icon pack customizations from Bootleggers
    - Statusbar icons tuner
    - App lock
    - Expandable volume panel
    - Advanced gesture navigation options
    - FOD icon picker and wallpaper based color option
    - FOD Animations
    - Custom logo customizations
    - Custom Carrier Label & Carrier Label Placement
    - AOD Schedule options
    - 3 finger swipe to screenshot
    - Cycle through ringer modes
    - Adaptive playback
    - Long press power button to toggle flashlight
    - Long press volume button to skip track
    - Advanced reboot options
    - Additional lockscreen sclocks
    - QS tile styles
    - Switch styles
    - Edge light options
    - Battery light toggle
    - Scrolling screenshot (Asus stitchimage)
    - Battery icon styles (circle/bar/hidden)
    - QS quick pulldown
    - Bunch of useful QS tiles in addition to AOSP ones:
    - AOD
    - Caffeine
    - Data Switch
    - Location modes
    - HeadsUp (peek notifications)
    - Kill app
    - Weather
    - USB tethering
    - Screenshot (partial/full)
    - Sound (ringer modes)
    - Sound search
    - Reboot (system/recovery)
    - Mono/Stereo
    - Notifications clear all button
    - OOS-inspired QS tiles layout
    - Data usage under QS
    - Small oreo-like data type icon
    - Traffic indicator for wifi and mobile data
    - OOS-inspired Network speed indicator
    - VoLTE/VoWiFi multi-sim icon
    - Lockscreen media art and blur level controls
    - Improved statusbar pulldown blur
    - Added blur to power menu
    - Double tap to sleep on statusbar, launcher, lockscreen
    - Finer control over font size
    - Mini panels for wifi, bluetooth, NFC
    - Per-app network restrictions
    - Allow hotspot/tethering to use VPN (toggleable)
    - Additional charging info on lockscreen
    - Statusbar bluetooth battery level
    - NFC tile for devices with nfc
    - Multi SIM ringtone setting
    - Screen recorder stop dot and low quality options
    - Bring back 2 button navigation from pie
    - Delete button for screenshots
    - Faster fingerprint wakeup
    - Pixel offline charging animation (for supported devices)
    - Enabled iorap and zygote preforking (for faster app launch)
    - One click to add/remove QS tiles
    - Hacks to bypass safetynet and root detection
    - Few pixel features like assist disclosure, live captions, adaptive connectivity
    - Optimizations and fixes from AOSPA, ProtonAOSP & upstream AOSP master

    - CAF functionality improvements/enhancements:
    - Bluetooth A2DP hardware offload
    - Audio policy extensions
    - Camera extensions
    - Telephony framework
    - Individual sim toggle (for some dualsim devices)
    - WiFi display/miracast
    - Hardware accelerated screen recording
    - NQ NFC support (for nfc supported devices)
    - Power off alarm in inbuilt clock app
    - Touch response optimizations
    - Performance improvements & fixes throughout the system

    What's broken?
    You tell me!


    ROM (OnePlus 9):
    ROM (OnePlus 9 Pro):

    Make sure you are on latest OOS 11 (
    Reboot to bootloader
    Flash the provided boot.img
    Reboot to recovery
    Format data in the recovery
    ADB sideload
    (optional) Flash Magisk
    Reboot and voila!

    Upgrading to a Newer Build
    Reboot to recovery
    ADB sideload
    (optional) Flash Magisk
    Reboot and voila!

    Follow us on Telegram

    Device specific support chat Click Here!


    Paypal: Click Here!
    UPI(For Indian Users Only): [email protected]


    Google for Android and AOSP









    Cory Collins

    Mukesh (Xtended Dev)

    Hardik Srivastava (OddlySpaced)

    Any others we may have forgotten to credit

    And last but not the least, all our testers, who have helped us to squash many bugs so that we can try to release builds that as are flawless as possible

    XDA:DevDB Information

    DerpFest, ROM for the OnePlus 9/Pro

    Contributors @NurKeinNeid , @Ledrock

    ROM source:
    Device sources:
    Kernel source:

    ROM OS Version: 12.0

    ROM Kernel: 5.4.147

    ROM Firmware Required:

    Based On: AOSP

    Version Information

    Status: Stable

    Created 2022-01-30

    Last Updated 2022-03-18
    Hey guys the new February update is here:

    Device changelog:
    - Adapt to QuickSilver kernel based on Statix OS kernel with AOSPA and Arter chanegs
    - Nuke repeated sepolicy
    - Update BT from LA.UM.9.14.r1-18400.02-LAHAINA.QSSI12.0 - system: from LA.QSSI.12.0.r1-05100.02-qssi.0
    - Update CNE|IMS|QMI|RIL blobs
    - sepolicy: Fix compilation on Android 12
    - sepolicy: Resolve neverallows
    - sepolicy: Address Listen 2 Audio denial
    - Mark IFAAService as presigned apk
    - Add Alipay fingerprint payment support
    - Nuke hal_lineage_fod sepolicy
    - Add missing IMS symlinks
    - prop: Disable vsync for CPU rendered Apps
    - prop: Disable debug.sf.enable_hwc_vds
    - prop: Don't latch unsignal buffers
    - prop: Update camera app list props
    - QcRilAudio Stable AIDL: Compatibility matrix
    - Update compatibility matrix to support IFactory 2.4
    - Update compatibility matrix to support IImsFactory v2.0
    - Add vendor.qti.gnss.4.1 to FCM
    - Update composer version to 3.1
    - Add QtiRadio stable AIDL to compatibility matrix manifest
    - Update compatibility matrix to support IFactory 2.3
    - Update compatibility matrix to support ImsRadio 1.8
    - Add LocAidlGnss entry to FCM
    - Add IDisplayConfig AIDL in compatibility matrix
    - IMS Stable AIDL: Compatibility matrix
    - Update vendor.display.color version to 1.6
    - perf HAL version support
    - Update factory version to v2.2
    - Update ImsRadio HAL to v1.7.
    - Update QtiRadio HAL to v2.6.
    - Update UCE service HAL to v2.3.
    - Move foreground CPU Set to common
    - Fix refresh rate
    - Switch to /vendor_dlkm for kernel modules.
    - Build with specified clang
    - Overlay: Set config_battCurrentDivider to 1000 * Adapted from
    - move aux camera packagelist prop to system props * its now labelled as system prop, so cant be set from vendor props anymore as its a neverallow (c8fb9bd56773491564d8a3cc04048c204ef1e4ce)
    - Add support for OEM fast charger detection
    - Bring back a lot of libs from 11 vendor
    - Pin modified [email protected]
    - Remove odex/oat files from pinner list.

    Source changelog:
    - Merge February Security patch (android-12.0.0_r29)
    - Add 3-button navbar styles
    - Add Gphotos unlimited storage switch
    - Add Outline iconpack
    - Add Weed wifi icons
    - CAF Bluetooth upstream from latest QSSI 12 tag
    - PixelPropsUtils: Whitelist ARCore
    - PixelPropsUtils: Add netflix to raven spoofing list
    - PixelPropsUtils: Do not spoof Play Store
    - Fix sound panel not showing alarm volume when "link ringtone and notif volume" is disabled
    - Fix crash caused by Heads-Up timeout
    - Fix issue where pill disappears in gestural mode
    - Proper fix for Wifi Manager NPE
    - Ignore timeout when taking partial screenshots
    - Import missing lottie swipe fingerprint from redfin
    - Rounded lines for DerpFest logo in about phone
    - Fix NFC preference in Settings not listening to changes from the NFC tile
    - Convert one-handed mode to a PrimarySwitchPreference
    - Add back LTE only setting
    - DerpSpace: Fix visibility issue with black theme
    - DerpLauncher: Update search icon to match Settings
    - DerpLauncher: Categorize settings
    - DerpLauncher: Implement hidden & protected apps
    - DerpLauncher: Add user-specified default home page shortcut
    - DerpLauncher: Use app opening animation for notification opening
    - DerpLauncher: Add show Date instead of Now Playing switch
    - QuickSpace: Make date and now playing clickable
    - Quickspace: Add contextual messages/greetings event
    - Quickspace: Use system font and remove dividers
    - Quickspace: Abbreviate the date format to be like Pixel
    - DerpLauncher: Fix NPE on Uninstall shortcut popup
    - DerpLauncher: Add toggle for desktop and drawer labels
    - System shortcut: Make shortcut ripple covered totally when click it
    - DerpLauncher: Rework the PisselBar theming
    - Quickstep: Add chinese translation
    - WallpaperPicker: Use Google Sans for lockscreen preview
    - Updater: Switch to rounded button layout
    - Updater: Fix Android version strings
    - Add Russian translation for DerpLauncher and additions in AOSP settings

    OnePlus 9 Pro: Click Here!
    OnePlus 9: Click Here!
    Hey guys thanks for your patience! The new updates will arrive on your phones shortly! The changelog is big this time but I shall try to keep it short. I would really like to thank everyone that donated and supported me in getting a server to build your favourite ROM. However i would also like to thank all the testers for taking time off their busy schedules and testing out the major update.

    NOTE: These builds might need a clean flash to work optimally!

    For the new bootimage to sideload the ROM please click below:

    If you would like to continue supporting the project you can do so using the below links (The donations will go for paying the monthly server costs):
    Paypal: Click Here!
    UPI(For Indian Users Only): [email protected]

    Device changelog:
    - Rebased device trees based on LOS 19.1
    - Use latest clang 14.0.4
    - Upstrem kernel to 5.4.161
    - Misc Changes

    Source changelog:
    - Rebase on android-12.1.0_r4
    - Switch to QS brightness slider customizations from Yaap
    - Switch to VoLTE/VoWifi icon customizations from Nitrogen
    - Switch to vibration intensity control implementation from AOSPA
    - Add Descendant's Reticker
    - Fix and make the volume dialog expandable
    - DerpSpace: Make use of AOSP small clock switch instead of using separate one
    - Settings: Add more trigger actions/app/activities to advanced gestures
    - NavigationGestures: Allow customizing gestural margin bottom
    - Settings: Rearrange and categorize gestures & keys fragment
    - Settings: Add Battery charge warning options
    - Lockscreen charging: Bring back Pie style of charging line where battery info is displayed in the second line if enabled
    - Lockscreen charging: Bring in °F/°C toggle
    - Remove heads up stoplist
    - Add back Less boring heads up option
    - Add HUN importance selector
    - Add option to disable notifications vibration
    - Remove Battery left text option
    - Add music QS tile title toggle
    - Move wallpaper zoom switch to DerpSpace
    - Add switch to hide status bar on lock screen
    - Add switch for kill button in notification guts
    - Add switch to force expanded notifications
    - Add switch to force expanded media player
    - Add switch to launch default music player on headset connect
    - DevSettings: Add Alarms and Wakelock Blocker
    - Started with barebones DerpLauncher

    Download Links:
    Hey guys, the hotfix builds are up for lemonade/lemonadep. I apologize for the delay. The 12.1 builds will be posted here as soon as the source side work has been completed. Thanks for your patience and have a great weekend!


    Device changelog:
    -Hotfix build to fix minor issues with previous build.

    Source changelog:
    - Merge android-12.0.0_r32
    - Add FaceUnlock implementation from PE
    - Add AppLock from KOSP
    - Add Refresh Rate QS tile for supported devices
    - Allow to hide arrow for back gesture
    - Add option to change PowerUsage provider
    - Show battery temp on power summary
    - HeadsUpTile: Do not crash SystemUI on long click
    - Improve Secure QS tile toggle behaviour
    - Use wireless charging animation for wired charging too
    - Add VoLTE icon from Motorola
    - Fix carrier label being white on light wallpaper
    - Don't warn user about FC in Google TTS
    - Changelog: Use NestedScrollView instead of ScrollView
    - DerpLauncher: Remove protected apps in favor of system with applock
    - DerpLauncher: Remove overview scrolling animation
    - DerpLauncher: Refine quickspace icon shadow
    - DerpLauncher: Add toggle to make AppDrawer sizes independent
    - DerpLauncher: Allow changing max lines for app label
    - Update Russian and Chinese translations

    Download links:
    To anyone seeing micro stutters, change these settings in franco kernel manager.

    CAF CPU Boost
    (see attachment)
    Screenshot_20220205-104419_Franco Kernel Manager.png