[ROM][12.0] DerpFest for Galaxy A20/A20e [OFFICIAL][a20/a20e]

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Jul 16, 2022
Samsung Galaxy A20
This thing happened to me as well, just off extra dim feature then Netflix, hbo and disney+ will work.
It is off by default, I classify it as one of the features that I don't know and Don't need, so I never touched it. However, I made a factory reset of Derpfest, and now it seems to be working now.

2nd Edit: HBO max is showing image, but disney+ is throwing an error but i'll dig into it aswell.

Third Edit: Yes Disney+ works fine after the Factory Reset.
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Jul 20, 2022
I m facing issue whenever i upload video on Instagram story it becomes black pixelated or corrupted pixels appears nd video becomes like negative or photograp how to resolve this issue ?


Jul 20, 2022
When they roll out new update with kernel updates & more ui upgrades & customization any idea or any telegram group, twitter account where they share their news?


Jul 20, 2022
the kernel will get one last update but they posted a picture of android 13 working on a different device that uses the same SoC so its likely that these will also get android 13
Why kernel will get one last update? I think this kernel should have to update furthur more this kernel is good and doing great job some issue need to be addressed


Senior Member
Jul 18, 2014
@burningcreation S10e OneUI4.1 Android 12 port is a very good option and almost as if Samsung released Android 12 for the A20. The only real issue with this ROM is the Eureka kernel that has a few issues - mainly with borked cpu governors and memory management. Doubtful that this will be fixed since there is no discipline in the development process.... just kids.

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  • 1
    I never used volte but this rom supports 4g which i know
    i installed Derpfest 12L today & also tried Spark OS 12.6v ON 12L.
    Sorry to say that VoLte doesn't work on these custom roms.
    Switched backed to stock Android 11 oneUI & it works there
  • 16

    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!

    What's broken?

    - VoLTE (This depends on Samsung Frameworks)
    - Netflix HD (DRM Widevine)
    - On some a20e devices, NFC is dead. (Will be fixed on next release)


    ROM - SourceForge : Official Derp SourceForge
    Screenshots, Notes, Changelogs in post #2

    Follow us on
    XDA DevDB Information

    DerpFest for the Galaxy A20, A20e

    Contributors @Royna
    @Chatur27 for Eureka Kernel base

    ROM source: (Private)
    Kernel source: Eureka Kernel R9.2
    Device Tree: here
    ROM OS Version: 12.x
    ROM Kernel Version: 4.4
    Based On: AOSP

    Version Information

    Status: Stable
    Created 2021-12-02
    Last Updated 2022-04-08

    Thread base taken from https://forum.xda-developers.com/t/rom-12-0-derpfest-for-oneplus-7t-pro-official-hotdog.4250469/
    - 2021.12.02
    Inital xda release
    Note: SamsungParts Included in this rom is broken, replace the /system/priv-app/SamsungParts/SamsungParts.apk with this one

    - 2021.12.10
    Source Part: December SPL
    Device Part:
    - switch to pixel thermal hal
    - fix gcam giving black picture if photo was taken with flash for some people
    - make SamsungParts S-style
    - set some additional props/overlays for performance
    - enable NFC for SM-A202F (Some A202F don't have it but some do. Just enabled for all A202F)
    - F2FS /data /cache support
    Note: for broken dpi, goto /vendor/build.prop and edit ro.sf.lcd_density prop to 280

    - 2022. 01. 08.
    - Fix DRM WideVine (L3 -> L1) (Now HD Netflix etc works)
    - Fixup dpi for some devices
    - Swtich to Footej camera

    - 2022. 02. 10.
    - Switch to Eureka R9.0 Kernel
    - Now Eureka dtbo & dtb is included in the ROM zip
    - Fix Deep sleep with DT2W on for A20
    - Fix Status bar padding
    - Enable SystemUI rro target
    - Change zram default compress method to zstd
    - Enable samplerate support for bluetooth headsets (For BT calls)
    - Enable Wi-Fi MAC randomization
    Note: WiFi Hospot is broken, To fix, delete /vendor/overlay/WiFiOverlay folder (and its contents) and put this apk to /vendor/overlay on twrp or root explorer and reboot.

    - 2022.04.08
    - Wifi sharing works with Eureka R9.2
    - Now can access rear aux cam with custom camera provider hal
    - Implement Samsung's FMRadio
    - Use 8MP for front camera resolution
    - Merged LineageOS SamsungDap for parts
    - Misc overlays, props for performance improvements
    March SPL is delayed because there is no Android 12 with March SPL, but there is Android 12L now. Derp main dev is WIP merging now, will build after he finishes merge as soon as possible.
    I know man I am now using dot os 5.2 but I want to test new features which I have never experienced in android 12.1
    Derp is dead, dev deleted the source. The eureka team said that only some roms would be coming out on this month. Ancient is dead for a20 probably so the only official 12.1 rom we have for a20 is Spark OS