How To Update Xperia Arc S LT18i / LT18a to Android 4.1.1 Jelly Bean CM10 Custom Firmware

It doesn’t looks like Sony is going to roll any software updates, forget Jelly Bean not even ICS updates.But now you can install an custom ROM on yonur device which is based on Android 4.1.1 Jelly Bean.Most of you will be well knowing or have heard about CyanogenMod 10 which is an Jelly Bean based ROM and you can very easily install Android 4.1.1 Jelly Bean CM10 Custom ROM on your Xperia Arc S LT18i / LT18a.




In this tutorial we will guide you through how to update your Xperia Arc S LT18i / LT18a to Android 4.1.1 Jelly Bean CM10 Custom Firmware.But before the tutorial we should let you know some warnings and pre-requisites.


Disclaimer – All the tools, mods,firmwares or ROMs etc. mentioned below belong to their respective developers or owners.In any case while following the tutorial you do something wrong,miss a step or what soever, we or the developers or owners are not liable or responsible to any damage or brick of your device in any case. We are not forcing you to attempt this tutorial, its all your wish.


What’s must before proceeding forward to tutorial  

Download USB Drivers – 

Download the latest USB drivers, so that you can connect the phone to the computer from here –

Android USB Drivers 

It’s always advisable to be on a safer side before trying anything on your device, so please create a backup of your devices data.So that you don’t loose your contact,messages or files.

Full Backup Guide – 

Do make sure to check battery status –  Check Your Battery Percentage

USB debugging is enabled on your device –  Enable USB Debugging Feature

I hope every warning and instruction mentioned above has been taken into care, now let’s proceed to next page in order to update Xperia Arc S LT18i / LT18a.

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  • Hari

    i done every thing correct after “choose zip from SD card’ and i select zip. its says installation abort…can u please tell me what to do it? i m using LT18i

    • abhishek singh

      make sure u follow all pre-requisites and try repeating the process again

      • Ashish Tiwari

        All the users of lt18 have to unlock their bootloaders first, then u will. able to install cm10 by flashing kernel with the help of flashtool…

  • Joshua

    Error: Status 7. What to do now?
    Im using LT18i

  • syrzero

    what do you meen a factory unlocked,
    a flashin generic firmware o a root acces???

  • ramakant bhoi

    i m l18i user…
    i had done all steps but it showing….status abort….!!
    what to do??

  • jk

    fuck you! dickhead! you bricked my phone you are not telling us how to flash kernel through flashtool! fuck you!