CM 13 ROM for Galaxy S3 I9300

Its 2016 & Samsung has yet not released latest Android OS for Galaxy S3 I9300. But don’t worry, thanks to Cyanogenmod (CM) for releasing Official Cyanogenmod 13 (CM 13) i.e Android Marshmallow 6.0. As Galaxy S3 I9300 won’t be getting an official Marshmallow update firmware its an awesome way to taste Android M build in your Galaxy S3 I9300. This ROM is completely stable but you might find few bugs, which we believe will be rectified in the final version of this custom firmware. The entire process is pretty simple, you just have to flash the Cyanogenmod 13 6.0 ROM of Samsung Galaxy S3 I9300 through TWRP Recovery. Make sure you follow every steps carefully or else you won’t be able to boot into CM 13 ROM.

Features of CyanogenMod 13 (CM 13) in Galaxy S3 I9300

  • Finger Print support
  • Multi Window Support
  • New Sytem UI and more Customization
  • Better Battery through Doze
  • New “Do Not Disturb” settings, a good step up from Lollipop
  • Better Theme App.
  • All the features of Android M

Also Read:

About CyanogenMod (CM)

CyanogenMod is an alternative operating system intended to replace the one pre-installed on your smart phones and tablets. If you’ve got an older device that isn’t getting updates anymore, or if your device seems unusually slow, or maybe you’re sick of spyware, adware, and other unwanted garbage on your phone that you can’t remove… Maybe your device is missing features or has been otherwise artificially limited in functionality. Perhaps you just could use a boost in performance. Or maybe you’d like to be more confident that your operating system has included some of the latest bug fixes. If so, CyanogenMod might be for you.


  1. Root & Install Latest 2.8.7 TWRP Recovery in Samsung Galaxy S3 I9300
  2. Check the battery percentage of the phone, it should be at least 40%.
  3. This ROM is only for Galaxy S3 I9300. Please don’t try this on any other smartphones.
  4. Backup all your data: Contacts, Photos, Apps & other files. (Although you will not lose other files except contacts & Apps, but its better to be on the safer side)

What works in CM 13 for Galaxy S3:

  • Wifi
  • Bluetooth
  • NFC
  • Colours
  • SD card
  • RIL (calls, SMS and data) – SIM lock probably works now, too.
  • Camera
  • DRM
  • GPS
  • Now everything works perfectly! [Update: 22/12/15]

Known issues:

  • Wifi occasionally turns off after a minute or so when the screen is off
  • Wifi p2p doesn’t work
  • Netflix’s colours mess up after watching for a bit
  • Non-FAT32 SD cards don’t work
  • Fixed everything, Everything works perfectly!


Samsung Galaxy S3 I9300 CyanogenMOD 13 6.0.1 ROM
Samsung Galaxy S3 I9300 CyanogenMOD 13 6.0.1 ROM

Install CyanogenMod 13 6.0.1 ROM in Galaxy S3 I9300:

  1. Transfer the downloaded CM 13 & GApps zip, in your Galaxy S3 I9300.
  2. Turn off / Switch your Galaxy S3 I9300
  3. Press and hold Press Volume UP + Home Button + Power Key at the same time to boot into Recovery mode.
  4. Do not forget to perform a nandroid backup. Goto backup option in TWRP and select all the partitions including System, Data, Boot, Recovery, EFS and swipe right to backup.
  5. After performing the ROM backup, go back to the TWRP main menu and tap the wipe button.
  6. Then, select Advanced Wipe, as well as Dalvik Cache, System, Data, and Cache (Don’t select Internal storage)
  7. Next, swipe to confirm. Wait for the wiping process to complete.
  8. Next, Goto TWRP main menu & goto Install option.
  9. Locate the CM 13 downloaded zip file & tap on it. Now swipe to Install the ROM.
  10. Once the installation process is finished successfully, Again Goto TWRP Main menu, Tap on Install & locate the GApps zip file. Swipe to install GApps Package.
  11. From recovery select “reboot” and enjoy.

Bootloop after installing the ROM?

Try wiping data, cache, dalvik, system and re-installing. Some people have reported that dirty flashing over CM 12.1 works.

Download CyanogenMod 13 & GApps for Galaxy S3 I9300

  1. CyangeonMod 13 ROM: Download.
  2. GApps for CM 13 Galaxy S3: Gapps 6.0 (ARM/6.0/Mini) Do not boot the ROM before flashing these, or you will have to factory reset. For Now on Tap, use mini or higher

Also Read: List of all Cyanogenmod CM 12.1 Themes

Final words

To enable Root access, Enable developer options and look in Settings -> Developer options -> root access. Currently Doze doesn’t work in Galaxy S3 I9300 but the developers might fix this in future updates. If your camera crashes frequently, download Google Camera from Playstore, don’t use the Camera of GApps. To Fix Stock browsing crashing issues, You need to grant it permission to access storage in Settings -> Apps -> Browser -> Permissions. If you have any other issue, contact Cyanogenmod using the report feature. Hope you are enjoying Marshmallow in Galaxy S3 I9300. Peace!

Last updated on: Aug 28, 2016 @ 9:45 am


  1. Well,
    I am in this reboot menu.
    But who the heck does set so SENSITIVE swipe?
    I am not able to load ,,install” option.

    Can anyone help me?

  2. I have pin protected SIM. it’s detecting the SIM but when I enter the pin, it says pin operation failed. What to do now?

  3. Meu S3 ficou com erro após instalar os GAPPS, se eu reinstalo a ROM sem os apk da google, sem problemas. Porem quando gravo os GAPPS, ocorre erro de processo precisa ser fechado a todo instante, ficando impossibilitado de ser usado.
    Tentei usar o pacote mais TOP (aroma).

  4. Thanks for tut. All working for me. No problems with network or sim.
    i use:
    Pico Google Apps ARM

  5. help! my wifi signal became weak after updating to marshmallow..always disconnects even im already in front of the router…im using Samsung galaxy s3 i9300…tia!

  6. hi! i have s3 i9300 i installed cyanogen mod of android 5.1 on my phone but now it wont work…..when it opens it is stuck on cyanogens logo that bear type logo…… help plz dont know what to do

    • You might have dirt flashed the ROM on TouchWiz rom. I would suggest you to install twrp recovery again & perform a complete system format from TWRP recovery. Now install this ROM.

  7. Hello, I just intalled CM13 in my I9300 that is SIII. Everything was fine until the setup came to customise,that is language selection.I couldnt click next bcz a lock symbol is coming up. Pls help me out. I am beginner 🙁

  8. First time user with an S3 (i9300). Tried cyanogen 15/07/2016 nightly build with mini GApps So far appears to be working great, though I can’t find an FM Tuner like on the stock ROM. Not sure if this is cyanogen or gapps.. Liking what you’ve done so far otherwise. Cheers

  9. Hello there. Today I finally installed cyanogenmod and i have a problem with gapps. Im using cyanogen from 2016 July 08 and the same for gapps. When I’m opening Store, it goes white for a second and then it goes back to main screen. I need to install google services. Appreciate any help.

  10. Songs start lagging when I play them through my bluetooth speaker. I think it started after the cm-13.0-20160621-NIGHTLY update.

  11. Hi…I’m confused which ROM to install…the latest one or SNAPSHOT added on 2016-01-15…plz help me to select the best one…thank you.

  12. Hi,
    I have installed the CM13 with GAPPS 6 and when ever i am trying to use the Phone app (after dealing the number and when i click on call button) the system reboots…
    Any ideas?

  13. I just followed all procedures.I Rooted & Installed Latest 2.8.7 TWRP Recovery. Then installed CyangeonMod 13 ROM and
    GApps for CM 13 Galaxy S3: Gapps 6.0 (ARM/6.0/Mini). Everything is fine infact perfect but my phone has lost network. Its detecting sim network but cannot connect/register. No Service message

      • I agree on the comment from Linx below:

        ”Linx Jun 20, 2016 at 5:49 am
        It’s clear this rom is causing network issues with the S3, why are you still recommending it?”

        • Well, looks like you are new to Android ROMs & stuffs. No one forces you to install anything. Its your device, you have made the decision to use this ROM. This bugs have occurred in latest updates, which will be fixed in next update. The ROM is provided by Official Cyanogen team.

  14. I did install all the way mentioned here. The flash was successful but only problem I faced was that there is no mobile network. It says “Emergency Calls Only-“.
    When I tried to make a call it said “Not Registered on Network”. I tried changing other sims but it did not worked.
    Please help me with this.
    Thank You!

  15. I have a GS3 SPH-L710, I have installed both CM12 & CM13 with appropriate GAPPS mini’ but data will not connect. I am able to use wifi, but data never connects. can anyone help?

  16. After the initial install I was able to use WiFi to download a few apps etc. Now, whenever I try turning the WiFi on it says it’s searching but then next time I go into the network list menu WiFi is off again.

    I don’t have a SIM card for this phone, was mainly wanting to use it via WiFi for music etc but now it’s useless.

    Any advice would be great.


  17. HI,
    How much time system would take bootup after installtion.????after 30 mins still show logo and android is starting screen …what can i do now??

  18. Hi!!
    I have flashed the cm13 on my i9300..
    All things went right and the both rom and gapps were flashed successfully ..
    But the first messages in screen were : google play and google pkay services and the other gapps were stopped!!
    No one of them are working !!
    Please tell me what to do ?!!
    Notice:my i9300 is arm and I dow downloaded the pico gapps

  19. After installing cm13 ;my phone not detected sim and wifi is not turned on:camera perfomance deecrease .any suggestion for me

  20. Hey, My GS3 has no root, and it is a SGH-I747 model, locked with AT&T. It is running 4.4.2 KitKat. For some reason it doesn’t like to connect to my computer. If somebody could tell me how to root it without using a computer (and towelroot isn’t supported), that would be great. I would love to install the CM 13 on it, but I cannot do that without root, unless somebody know how to do that. Could somebody please help me? Thanks.

    • You need a computer to do it. I have the SGH-I747M which is the Canadian Version Galaxy S3. It took me a while last year to get it rooted with a lot of bricking and I learnt the phone inside out. I found out how to root it after many tries and installed Cyanmodgen 12.1 on it and now I have CM13 loaded with it updating the nightlies about once a week. Have the odd little issue here and there with it but over-all I love it. If you want to root your phone and find a computer to do it with let me know and I’ll send you all the info on how to do it and the files you need.

  21. After the succesfull installation of cm 13 and gapps mini I reboot. In the first setup I can’t get any further because of Google play store crashes.
    Am I missing something?

  22. Hi, I have a crash report for Google Play on Gt-I9300 Android 6.0.1 Marshmallow . Howard can I resolve this problem? Thx

  23. “Unfortunately google play store has been stopped” over and over. I don’t get past the screen where Android searches for updates. Installed cm-13.0-20160326-NIGHTLY-i9300 + open_gapps-arm-6.0-stock-20160326…

  24. Greetings,

    Much thanks for this, it is appreciated. However, when I install both the files as per the ALL the steps above, I get an error message during initial setup saying: “Unfortunately, Google Play Store has stopped”. What could be the issue?

    I used Kingo Root for rooting and installed TWRP, before I used TWRP 3.0 but all I get is this error.

    Kindly advise the soonest.


  25. Hola tengo un problema tengo un S3 i9300, instale la rom CM13 pero al momento de instalar las Gapps no me instala me sale aborted error y ya probe con todas ARM/Android6.0/ Stock o la mini o la nano, la micro todas y todas me tiran error de instalacion :C y si si arranque la room 🙁 antes xq la primera vez me dio error de instalacion y arranque la room pense q igual se habia instalado pero igual vuelvo a formatear y a reinstalar la room reemplazandola nuevamnte para salga q no a arrancado y todo de cero intlar con gapps pero nada lo mismo me vuelve a dar le error :C en un foro q ya no encontre leii q habia q particionar nose q xqq las gapps de android 6.0.1 piden mas ram de lo q tiene para ofrecer el s3 y por eso da el error al particionar se quita pero nose ni que ni como se hace ayudame no se q hacer porfavor :C

  26. many errors occurs . but from ur guide of clean installation . it is done thank u thank u thank u so much….. love uh.. also will donate .. :*

  27. Hi there dev. I have been struggling with my i9300 for weeks now coz the gapps isnt working. I have tried everything but the gapps still bombs. The download above i have tried too in the way it was explained but the error code keeps popping up saying that the gapps file isnt the version for my phone. Please help!!!! I miss google play, google play music and gmail!!!!!!

  28. instale “Marshmallow Android 6.0.1, en Mi motog 2014” y Funciona; pero …, ¡No no reconoce la tarjeta SIM: No pude Solucionar El problema. que tengo que hacer??????

  29. hey dev! i have galaxy grand device! & i downloaded correct files for my device just need your help I installed cm13 but when i install gapps while installing gapps it always reboot in between installation. rom gets intalled correctly but during gapps it reboots the system! can u help me?

  30. Thanks for the step by step installation process.
    But I have one question , after the succeed, all the back up i did before the installation is inside my phone and i’m out of internal space, how can i erase and open space?


  31. Thanks for the Guide! Spent the last 3 days trying to get my S4 back working, an outdated TWRP was the problem causing gapps to Crash.

  32. ¡Hola!, escribo, desde Chile: Seguí todos los pasos para la instalación y tener “Android Marshmallow 6.0.1, en Mi S3” y funciona; pero…, ¡No Funciona Ninguna “Gapps”!… ¡Las he probado Todas!… ¿Tiene Solución?… ¿O, hay que esperar “Nueva Actualización”?… ¡Sólo “Gapps”, no Funcionan!… ¡Gracias!

    • Hey Sergio ! Instalar el gapps junto con la ROM . No arrancar la ROM antes de instalar las gapps . Muchas personas informaron de esta solución y lo he mencionado anteriormente también! Feliz de verte aquí!

  33. Currently I’m on CM11 and would like to install CM 13 on my i9300 soon. I have CWM recovery installed. Can I flash CM 13 with it or is it necessary to use TWPR?
    What gapps version would you guys recommend?

  34. Please can you help me solving? My issue for I9305 will I need to flash xxbma6 modem to fix ril and how to solve ext SD

  35. A mi me funciona perfecto. Pero… de vez en cuando se apaga y prende por si solo. Queria actualizar al nightly mas fresco por si se soluciono el problema. Debo hacerlo todo de cero o es posible “actualizarlo”?

    • Sólo esperar a futuras actualizaciones o puede intentar hacer un restablecimiento de fábrica y borrar la memoria caché

  36. Buen dia. Yo seguí todos los pasos para la instalación y funciona. Pero, no reconoce la SIM: Dice No hay una SIM Card instalada. No he podidio solucionar el problema.

    • Hey , considere la memoria ROM después de un formato completo Sistema de TWRP recuperación . Como ninguno de los usuarios reportado ninguna de esas cuestiones . Esto podría haber ocurrido debido al parpadeo sucia sobre otras roms .

  37. Same problem as “gaurav” said. I tried to install many diferents gappsgapps version (pico,mini,stock,full) but any one works. I tried a full wipe and install cm 13 again than some gapps but its not worked. I still having the error on gapps instalation. Please Help me.

  38. I tried installing CM 13 on my SGS3 i9300. However, I had used CWM recovery. I successfully installed CM 13, but there was an error when I tried to install Gapps mini (ARM/6.0). It said that installation aborted. The reason was that it could only install Gapps on a fresh installation of CM 13. Please help.