If you have a Sony Xperia S, you are one of the many users who already have a smartphone that is no longer going to update its firmware officially. However, thanks to the Custom ROMs, and specifically, thanks to CyanogenMod 11, you can now install Android 4.4 KitKat on your Sony Xperia S.
Android has a special feature that makes the difference between an Android smartphone and one with iOS after a couple of years. Neither smartphone will be updated at that time, but the Android freedom allows other developers to work on new versions for certain smartphones that have already been abandoned by the companies that manufactured and launched them. The Sony Xperia S is one such case. It is a smartphone with a dual core processor and 4,3 inch HD screen which also has a 32 GB internal memory. It was certainly a great smartphone in its day, and it's still capable of performing well today. Not only that, but it could even run the latest version of the operating system, 4.4 Android KitKat.
Although it will not be Sony that will release the update for the Xperia S based on this version, it has been a community developer the person responsible for adapt this new version to what was once the flagship of the Japanese company. Obviously, it still has a series of errors and incompatibilities typical of a preliminary version that will probably be solved over time and with the arrival of new modifications and small updates of this new version. The ROM is CyanogenMod 11 and is based on Android 4.4 KitKat. As usual, all the installation information can be found in the thread XDA Developers.
What CM11 offers on the Xperia S (Nozomi) and what you need to know
CM11, the community project that popularized custom ROMs, allows you to enjoy Clean and fluid KitKat on the Xperia S. On a practical level, you'll find an interface without a manufacturer layer, improvements in performance and RAM management, and extra customization features. Over time the project adopted the name LineageOS, but CM11 packs for Nozomi remain the base to bring KitKat to this model.
As with any unofficial build, there may be specific limitations. In early builds for Xperia S some users reported problems with FM radio, stereo sound disabled o headphone jack issues, as well as isolated cases of high battery consumption y modem wakelocks (RILJ). The message may also appear WiFi network in “saved, WPA protected” state; in those cases, change the router encryption to WPA2 usually solves it.
Important prerequisites and recommendations
- Bootloader: for the Xperia S recommends unlocked bootloader (UBL) to flash the kernel included in the ROM. Check the status from the service menu. Before unlocking, make a copy of the TA partition to preserve DRM keys and proprietary features.
- Updated recovery: Install a modern recovery (TWRP/PhilZ). If it appears “Status 7” when flashing, it is usually due to an outdated recovery.
- Correct GApps: use the package of Google Apps specific to Android 4.4An incorrect package can cause Play Store and services to shut down.
- ART: : not recommended to activate ART in these compilations; Dalvik offers greater compatibility.
- Backups: makes nandroid backup and copy your data. The first boot is slow; patience.
How to install Android 4.4 KitKat (CM11) on the Xperia S
- Download the CM11 ROM for Xperia S from the thread XDA Developers and the package GApps for 4.4.
- Copy both .zip files to the phone memory.
- Flash the kernel included: reboot into fastboot and run fastboot flash boot boot.img (the boot.img is inside the ROM zip). Then enter recovery.
- In recovery, go to Wipe and perform Factory Reset + Wipe cache + Wipe Dalvik/ART cache. For clean installations it is also recommended format /system.
- Install the ROM and then, install the GApps. Restart.
- In the incremental updates (nightlies), it is usually enough to flash over it by doing only wipe cache and dalvik.
Common mistakes and quick fixes
- WiFi “saved” not connected: Change the router security to WPA2 and forget/redetect the network on the phone.
- Low audio or distortion in games: check the media volume, avoid aggressive equalizers and consider specific audio modules compatible with KitKat. The FM radio may not work; third-party apps like Spirit FM are an alternative (as long as the hardware allows it).
- Lags, restarts or warm-up: Uninstall apps that keep the device awake, check wakelocks and, if appropriate, performs a clean installation.
- Error Status 7: update to TWRP/PhilZ recent and verify the integrity of the zip.
- Play Store is closing: uses GApps KitKat correct and clear cache/data Google services If necessary.
Kernel, Recovery, and Compatibility Notes
Some builds include a kernel adapted to the Xperia S that you should always flash (boot.img). If you use another kernel, error reports can be ignored. For installations from stock firmware, have ADB/Fastboot and drivers from Sony simplifies the process. If you can't unlock the bootloader, there are developments for other models with closed bootloaders, but in the Xperia S the recommended way is UBL to ensure compatibility and stability.
For continued support, patches and feature lists, follow the thread. XDA Developers. The public community nightlies with corrections, and it is common that over time details are polished autonomy, audio and connectivity.
The Xperia S can still perform very well with KitKat. With the prerequisites in order, suitable kernel and a clean installationCM11 offers a streamlined, modern experience, plus community support to resolve common issues and extend the lifespan of this Sony classic.