16 Jul 2015

Cyanogenmod 12.1 custom rom for Sony Xperia V tsubasa Lt25i

Sony xperia V tsubasa lt25i has received lollipop rom in form of cyanogenmod.Though CM 12.1 is not avaiable officially ,unoffical is available with lot of changes under the hood.There are lot of tweaks to kernel for improved performance.

Tsubasa is device specific codename for xperia V and has a model number as "Lt25i".Codename and model number are the first thing to check before trying any custom roms.After compilations all kernels and roms zip file names will definitely have either of these.

So before flashing you have to make sure that zip files which you have downloaded for xperia V have any one of them.Though recovery doesnot allow you to flash other android device roms. you have to keep an eye on flashable zip file names which you download.

CM 12.1 rom for Sony Xperia V Tsubasa Lt25i:
CM 12.1 rom for Sony Xperia V Tsubasa Lt25i

About cyanogenmod for Xperia V:
Cyanogenmod is one of the best custom roms available in android development ecosystem.They support lot of devices.This is based on android open source project with lot of added features.IT uses android 5.1.1 lollipop as base for now and will be updated to later versions of android when available.
cm lollipop roms xperia v tsubasa lt25i

This rom is compiled by a xda senior developer "WhiteNeo" , a big thanks to him for bringing this rom for our device.Besides general features of cm he tweaked kernel a lot which improves performance a lot and you will notice it for sure once you flash this rom.
General features of Cm 12.1:
  • Trebuchet: This is the default launcher that ships with cyanogenmod. But if you flash gapps then you might loose this.It doesn't have too many features like nova or other launchers but its simple and fast.
  • Status bar Tweaks:Status bar has lot of tweaks which include a brightness slider.Slide in status bar to adjust brightness of the screen.Double tap on status bar to sleep device and also network speed indicator for on going traffic info.
    lollipop roms xperia v traffic indicator
  • Performance control:A default CPU manager app to control frequencies and governors . You can adjust cpu frequencies and also set them on boot too.

  • Theme engine: Theme engine is from the cyanogenmod custom rom which basically changes the look user interface from lock screen  to ring tones all the way up to boot animations.The speciality of the theme engine is the ability to choose individual elements of every theme you have installed.So you like the ring tons and wallpapers of one theme and icons of other theme then you can have them at a time.Just open the theme chooser and you will understand how to do it.
    best custom roms for xperia v lt25i
  • Software Updates: Cyanogenmod is usually available in three types one s nightlies which gets updated with new features every night and are quite stable for daily usage.second one is the snapchat which is monthly build version which will be stable version and other one is the release candidate.Some times nightlies are considered must stable than the snapshots. As of now we have android lollipop 5.1.1  in form on CM 12.1. 
  • If you are missing root functionality or all your root apps are not working properly then to developer settings and check if root permissions are set properly.
These are key features of cyanogenmod and you can explore other features by flashing this rom on your Sony  Xperia V tsubasa.

Kernel modifications by developer:

As we said earlier whiteneo has tweaked kernel a lot so that you can have better performance.He compiled it with latest tool chains available and added some other features which are as mentioned below.
  • Over clocked: Kernel is overclocked to 1.62 ghz which will definitely improve performance but it costs battery life.
  • Under clocked: lowest cpu can now be set to 162 mhz for maximum battery life.
  • voltage control: You can now adjust cpu voltages to improve battery life but if you mess with it then it might brick your device for sure.So dont change voltage values unless you have an idea of it.
  • Governors: Intelliactive and IntelliMinMax cpu governors are also added.
  • kernel thermal control driver is also added.
These are some of the kernel features which are added by developer.

Must check: Miui V6 rom for sony xperia V tsubasa

Prerequisites:
  • Battery: Charge your xperia v to at least 90% so that you wont encounter any battery related issues while flashing this.
  • Backup:Backup all your data which includes apps,contacts,photos videos etc everything to computer or any cloud storage as flashing this Paranoid android on sony xperia V will erase data for sure.
  • Lock Gps:Lock your gps position on your current rom.If you use this a lot then you have to lock it so that it could work even after flashing other roms.Its easy to lock gps .Turn on gps in settings and find your current location in google maps and now now have locked on to gps.
  • Backup Efs partitions: Backup all your efs partition of your sony xperia v on current Rom. Just in case if you loose signal you can just restore it back.
  • Custom recovery: You need twrp recovery installed on your xperia V tsubasa. With out it you can not flash roms at all.
  • Downloads: Cm 12.1 rom for Xperia V tsubasa (androidfilehost mirror) and google apps if needed.Transfer them to internal storage.
  • You must have root access on your  xperia V tsubasa.
Disclaimer:
This is a risky process and we take not responsibly for all earthquakes that arise in your heart if it fails to boot after flashing and if you hard brick it even light from Pluto,Saturn cannot save you.

Must Check: Paranoid android rom xperia V tsubasa LT25i

Flash Cm 12.1 on Xperia V using Twrp recovery:

  • Download Cm 12.1 for Xperia V Lt25i and Gapps transfer it to sdcard or internal storage of your device.
  • Power of  device completely and wait for few seconds to confirm that it is off completely.
  • Press power button and when device boots up leave power button.
  • While your Xperia V is powering up you you will notice led light blinks.When this happens you have to press either volume up or down continuously until it boots into recovery mode.
  • Sony xperia V boots into twrp recovery.
  • Once you are in  twrp click on  backup and select all partitions which you want to backup. It might take about 5 minutes for backup to complete. Don't interrupt backup process.
  • Once backup of your existing rom is completed click on back button.Wipe data,cache and dalvik cache and wipe system partition too.
  • Now select Install and navigate to location where you have placed your Rom and gapps zip files.
  • Flashing rom might take about 5 minutes or so.Once flashing is complete do a factory reset again.
  • Now reboot to system.Wait at least 15 minutes for initial boot to complete and once done you can explore Rom features.
You have to flash super user zip if you want root access.If rom fails to boot just restore backup which you have made earlier.If you have any doubts on flashing cm 12.1 rom on sony xperia V tsubasa don't forget to leave a comment below.
Cyanogenmod 12.1 custom rom for Sony Xperia V tsubasa Lt25i Reviewed by Radha Krishna on 00:36 Rating: 5 Sony xperia V tsubasa lt25i has received lollipop rom in form of cyanogenmod.Though CM 12.1 is not ...

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