A couple of years ago Samsung released Dual SIM version of Galaxy S viz. Samsung Galaxy S Duos. This device is supposed to receive Android 4.1 Jelly Bean update officially as stated by Samsung. But in reality it never happened. Moreover, being a dual SIM device, it was ignored by most of the developers. As a result it didn’t get any unofficial update either.
But most recently one of the XDA member v_superuser has compiled a custom ROM for this mobile. This custom ROM, Cyanogenmod 11, is based on latest Android version Android 4.4 KitKat. As we know that Cyanogenmod does not support dual SIM devices, the secondary SIM card is not working in this ROM. Let’s few other things which are not working properly in this custom ROM.
From the above list it is clear that this custom ROM is in alpha state as most of the important things are not working properly. But on the positive side, you can perform primary functions like touch, Wi-Fi and graphics are working properly. So if you want to test this Android 4.4 KitKat based Cyanogenmod 11 on your S Duos, execute the following step carefully.
Since the risk is involved in the article written ahead, it is suggested that you should not go for it if you are unaware of all these things. It is better if you read the article completely before executing any step. If any damage or brick is cause to your mobile after implementing these steps, we will not be responsible for it.
Caution: Flashing of custom ROM is illegal process and therefore voids the warranty. So flash it at your own risk. (Warranty can be reclaimed by flashing official firmware.)
This unofficial version of Cyanogenmod 11 is compiled only for Samsung Galaxy S Duos S7562. Don’t try to flash it on any other device else it may cause permanent damage to it.
- Do charge your mobile at least up to 75% to avoid any interruption during installation due to low battery power.
- Take a backup of important data on your phone like SMS, MMS, APN, contacts etc. to the external memory card as this data gets erased permanently while flashing the custom ROM.
- How to Backup Android Contacts and Text Messages (SMS / MMS).
- How to Backup Call logs, APNs and EFS folder from your Android Device.
- The most important thing is you must have a custom recovery like CWM or TWRP recovery installed on your mobile. Without any custom recovery you cannot flash any custom ROM. Refer this article to flash Clockworkmod recovery.
- First download latest build of Cyanogenmod 11 for Samsung Galaxy S Duos from official development page.
- Cyanogemod 11 for S Duos
- As custom ROMs do not include Google apps like Gmail, Play store, play games etc. , download Gapps package and flash it after ROM.
- Gapps for Android 4.4 KitKat
- After downloading these files, connect mobile to PC using USB cable. Copy both files to the external memory card. Don’t extract them.
- Disconnect mobile from computer and switch it off. You need to boot your device into recovery mode for installation of ROM. For that press & hold volume up + volume down + power key + home button simultaneously until you boot into this recovery.
- It is recommended that you should take a nandroid backup of current working system. For doing this, refer this article.
- Now select wipe data/factory reset followed by wipe cache partition to wipe all the data & caches respectively from the phone memory.
- Next select install zip from sdcard followed by chose zip from sdcard. Select cm-11-20140507-UNOFFICIAL-kylexx.zip file from the list of files. Confirm it by selecting yes in next step.
- After flashing the ROM, do wipe data/factory reset again in order to avoid bootloop.
- After successful flashing of ROM, again select install zip form sdcard followed by choose zip from sdcard. This time select Gapps file for installation. Confirm installation by pressing yes in next step.
- After successful flashing of both files select +++++go back+++++ and then reboot system now.
Congratulations! Android 4.4 KitKat via Cyanogenmod 11 is now running on your mobile. Do let us know how it is working for you. If you came across any doubt, submit it in the comment section. We’ll come up with solution for you.
Tip: If you don’t like this ROM and want to get rid of this custom ROM, then you can do it by simply restoring the nandroid backup. For that boot into recovery mode, select backup & restore option and then select restore. Choose latest backup to restore.