Development [06.05.23] Full ROM System-RW (F2FS) for S918B I Dr.Ketan ROM

Data Encryption : What you prefer to have ROM with data Encrypted/Decrypted.

  • Encrypted

  • Decrypted

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New member
Aug 6, 2010
la hestre
hello Dr Ketan, nice to meet you.

sorry for my poor english.
First thanks for your great job, i use your roms since years with note10, S7 and note 4... great !

i have a question, i just bought a S23 ultra, rom stock actually...

if i install your last rom custom, am I loosing all my data ?

(i regret the old model with sdcard and jack socket mmmpfff lol)

thanks a lot



Senior Member
Jun 26, 2016
Hello Dr Ketan,

At the next update, the option to see the internal storage memory as an external micro sd will be such as available, it only needs that for your rom to be almost perfect.


Senior Member
Sep 20, 2010
Holley, Oregon
Not able to turn camera shutter sound off with csc features. I have tried all 3 options and rebooted each time. I am on T05.

Also, I keep getting notices that there is an update for the rom, but there isnt?

Johnny Eng

Senior Member
Apr 25, 2012
Samsung Galaxy S23 Ultra


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Recognized Developer / Recognized Contributor
I an confused why it says t04 I thought I had flashed t05, I was wrong. Can I dirty flash t05?
You are on T04
As suggested you haven't removed magisk module before dirty installing T05
In case of later, remove ROM module and reboot should fix
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Senior Member
Sep 20, 2010
Holley, Oregon
You are on T04
As suggested you haven't removed magisk module before dirty installing T05
In case of later, remove ROM module and reboot should fix
I flashed it and did a factory reset. When I apply essential fix, it gets stuck. Sticks at goodlock install then after reboot and next try it gets past that and stuck at yasnac install then closed now I can't reopen it

Update: it installed and is now up and running, thank you


Recognized Developer / Recognized Contributor
I have bought S21 and S22 but never convince to make thse device primary because of lacking of SD and till now I was using N20 as primary device. (S21 was pure S series device so there was no question to make it primary as being fan of note series, Indeed donated by S21 users to add ROM support)
Now with S23U I convince myself using it primary as My area just started 5G, We have to accept Ext SD is past and needs to accept "Cloud" service for Backup. I am using GDrive now as you can use same way SD card drive letter in MyFiles OR Root Explorer (Both are my favorite file managers) as separate Drive letter.
Still Hoping some day Samsung add extra external SSD drive to replace Ext SD cards
Also Using Samsung USB OTG for occassional Full Backup and really have nice transfer speed, Using FolderSync is icing on the cake.

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  • 5

    Only for my understanding.
    If I am on your latest ROM version T07, it is not necessary to store and keep your older ROM versions (T06 etc.), because there is no way to to downgrade the ROM/Firmware except they have same bootloader? ...and propably this behavior won't change in the future?
    You should able to downgrade as far as bootloader revision remain same. For example base of T07 is S918BXXS1AWD1
    Here 9th digit is binary revision (1 in above value)
    You can downgrade to other version as far as this 9th digit version remain same
    Care to share your battery efficiency tips please?

    debloat all apps that are not needed
    disable all apps that cannot be debloated and are not needed
    limit background processes for all apps you think are needed, either:

    - via the app's settings in Android
    - via the battery settings in Android (there are more options, e.g. disable the background processes completely)

    install magisk module "universal-gms-doze" to limit the background processes of google-play-service
    set power mode of phone to "light" (battery and device maintenance -> battery -> advanced battery settings)
    make sure in the developersettings that mobile data is turned off, if connected to wifi
    assign a static IP in the wifi settings, if possible
    disable "switch to better WLANs" in the advanced wifi settings
    activate "WLAN energy saving mode" in the advanced wifi settings
    disable "Automatically connect to Hotspot 2.0 WLANs" in the advanced wifi settings
    in connections -> mobile networks disable 5g ("connect LTE/3g/2g automatically")


    Create profiles to e.g.:

    - With DND enabled (10pm - 7am for me) and screen off, enable airplane mode and reactivate when screen is turned back on.
    - With VoWifi available turn on airplane mode/wifi and turn off airplane mode again when wifi is not connected

    I may have forgotten one or two things, but these are the most important steps (for me)
    It depends of course on your use of the phone, whether the steps are useful
    Guys I have problems regarding youtube videos buffering using revanced provided in ROM tool, anyone facing this too? And found a solution?
    I have fast and consistent internet and checked with regular YouTube before flashing this rom worked fine so that shouldn't be the problem.
    Yes revanced have issue
    I will prepare new version and include in next version
    June patch should be on the way
    I want to make a fresh and clean installation of t07 rom.
    Actulay I'm under t06 version.
    How can i do ?

    does i need to:
    - install TWRP,
    - clear data user, and wipe full data

    before install the t07 version ?
    Straightway Flash T07 (Use CSC file from stock firmware of your region if it is not from OXM grousp)
    Reboot to TWRP (It should auto reboot to TWRP after flashing ROM, if no, do manually) → Factory Reset/Format data as per your liking) → Reboot to System → Install Magisk apk → Open and complete additional setup → Reboot → Apply ROM Tool Essential Fix

    PS : You can find all details in Installation Guide.
    Received my s23 ultra last Thursday and flashed it directly with DrKetan T07. The installation and setup of the rom was smooth and the rom works perfectly! Even my banking apps work without me having to freeze magisk. Anyway i am very happy with the phone/rom

  • 28
    Dr.Ketan ROM for S23 Ultra for S918B

    Full ROM
    : Installation like a breeze, Full ROM includes full components of ROM and you can one step install ROM on any previous version of ROM without updating firmware. Currently ROM is system-ro. More info below.

    Supported device : S918B
    We do support usually 2-3 years since device launched, but yet no guarantee, We may drop support for any device / any variant/s anytime without any prior notice.

    Magisk ROM Module
    for All S23 variant Here

    ROM Features

    ROM Features varies with version of ROM. For more details, read changelog post. Link available in post #3 for changelog of all versions.
    Must read changelog for a version you are going to install, it will have latest information about features, changes, known bug list/fix of respective version.

    Installation and Download in Post #2

    ChangeLog : Post #3

    @Chainfire - Respected elite developer for supersu and his unbelievable contribution to XDA/Android community. @wanam - Respected elite developer for his awesome contribution and references to his works.
    @topjohnwu for Magisk
    @xperiacle the amazing developer for reference to his work and tools. @gharrington for 3minit battery and QuickLaunch.
    ROM Control source and all credit and thanks goes to @daxgirl and @Wuby986 for their open source project for RomControl.
    @AbrahamGC for some ideas samsungvn
    AbrahamGC and Anan1211 for Secure folder and s-health A12
    @afaneh92 for TWRP, system/vendor rw scripts and modules.
    @Arteush for bluetooth fix (losing BT pair on reboot)
    aka_vkl for Dolby digital
    kdrag0n for SafetyNet fix
    @Winb33 for custom font pack.
    HuskyDG for Bootloop Protector magisk module.
    @LeeGarChat for System-RW inspiration & Big Thanks for his RO2RW Tool to work for S23
    MrWeahere for CRB Kitchen

    XDA devDB Information

    S918 I Dr.Ketan ROM , ROM for the Samsung Galaxy S23 Ultra


    ROM OS Version: Android 13
    ROM Kernel: Stock (pre-rooted). Source code (samsung) here
    ROM Firmware Required: Stock Samsung specified version

    Version Information

    Created 2023-02-09
    Installation, Important Infos & Download

    : State of the art Installation procedure.

    • Only needed is supported device + Unlocked bootloader.
    • No needs to have device rooted/Installed TWRP/update device to specific base
    Detailed installation guide separately available in download area along with ROM files.


    Before you root your device you must be aware that

    • This will void warranty.
    • As of now you will lose Samsung Pay and Samsung Pass forever if you root once, even unrooting won't help.
    • There are many features stop working when you unlock bootloader other than S pay/Pass like Samsung Health, Secure Folder, Galaxy Watch pairing issue, Issue connecting old gear watch (S3 or earlier), Google Pay etc but ROM is patched for all these mentioned features. Still you may trouble using some bank apps and these may fixed by adding these apps to Magisk Hide
    • There may be some knox features there which you may not able to use but I can't list those as I never used. Just Google It
    • Patched featurs are working today when writing this, No idea if it may stop working next moment/tomorrow or later
    • Also to note, once you root, you can't go back to "pre-rooted" state completely. It is one way!
    • OTA won't work on rooted device.
    • ROOT with caution.
    • On unlocking bootloader you will have warning screen while device boot and as of now no workaround to hide. Though it can be removed with re flashing stock rom + re locking bootloader
    • You can unroot & Relock bootloader after flashing stock firmware, but still your warranty flag remain 0x1 and most of countries it still voids warranty. Also after unrooting & relocking bootloader, some knox features never work again.
    ROM Tool permission : Files & media - To save and read files, Calendar - Tool needs some time monitoring to avoid using RT immediately after reboot. Special access for accessibility service - Since Android 12 it requires for QS panel custom Toggl e.g. Reboot to recovery

    Download :

    Important Announcement for T06 release

    I am holding T06 because of Magisk 26.0 stable release just released. T06 test version is based on Magisk 25.2, one can install (update) to 26.0 easily but ROM Tool and Tweaks will have multiple things broken because of some changes in Magisk 26.0
    I will re-release T06 with built-in Magisk 26.0.
    @ Test users of T06 : Please don't update to magisk 26.0 else you may have multiple things broken.
    Testing T06 (WC8) with April 23 security patch

    There will be two test version of ROM Encrypted and Decrypted data
    If there will be some positive review for Encrypted data version then I may public release.

    Testing T05 (Stability update) for System-RW + Dirty Flashing friendly