How to Install Android 4.1.2 CM10 Jelly Bean on Xperia Neo MT15i / MT15a Custom ROM

• Last modified: Android Tips

CyanogenMod recently updated the CM10 base to that of Android 4.1.2. That’s when thanks to them, Xperia Neo MT15i / MT15a can now also enjoy Android 4.1.2 Jelly Bean on it. FreeXperia team is working really hard to bring all these latest Android 4.1.2 ROMs to Sony devices. You can easily install Android 4.1.2 Jelly Bean CM10 on Xperia Neo MT15i / MT15a with the tutorial given below. You need to have ClockworkMod recovery installed from before.

In this tutorial, we will tell you how to update Xperia Neo MT15i / MT15a to Android 4.1.2 CM10 Jelly Bean firmware with complete steps and instructions. Make sure you backup all your data as given in the tips below, because you will have to wipe all your data during the installation process. Let’s get on with the tutorial now.

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial ;-)

What’s Not Working:

  • Lots of features. This ROM is still WIP (work in progress).

Make sure you have installed all your USB drivers for the Sony Ericsson Xperia Neo to connect it with the computer. Download Sony Ericsson Xperia Neo USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

1. You need to enable USB debugging mode. This helps to connect your Android phone with the PC. See here: How to Enable USB Debugging.

2. Your phone battery should be 80-85% charged. If your phone goes off suddenly because of battery, during flashing ROMs or installing mods and updates — your phone might go dead permanently. See here: How to Check Battery Percentage.

3. Backup all your important data that you might need as soon as your flash a new ROM, or make a backup for just in case, you never know when anything might go wrong. See below on how to backup data:

4. Your phone should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

Now, let’s proceed with the tutorial on the next page and update Xperia Neo MT15i / MT15a to Android 4.1.2 Jelly Bean CM10 firmware.


  • Aleksandar

    hey. i have CM9.1 on my xperia neo mt15i. i updated just now to this cm10, and everythink is fine just liek i did with cm9.1. byut when i turn on my phone on loading cyanogenmod and not running… i waitted 10 min … u just said 5 min … and still the loading.. can u tell me pls what is the problem and how to fix? tnx and greetings

  • Javier Jiménez

    Sorry, in what exact point you flash the 4.1.2 custom kernel? if you don’t do it, yo may get, at least, a bootloop, before flash rom, you need to flash the custom kernel, it’s absolutely mandatory

  • RitishVerma

    Will this work with MT25i that’s the Neo L.???

  • systembuilder

    Same question of mine, can this ROM work on MT25i?