[4.1.2] Jaguar

Device: Samsung Galaxy SIII (Sprint)
Base Rom: 4.1.2 MD4 JellyBean
Status: Official Build

Included Features:

3-in-1 Reboot Options | 1X/3G Signal Mod | Battery Full Pop-Up Removed | Call Block

AM/PM Removed | Call Recording Enabled | Assorted Other Features

Included Apps:

Adaway | Polaris Office | ES File Manager | Advanced Task Manager |  Flash Player

MyFiles | USB Tether | Terminal | Swipepad | Swype Installer | GAPPS

 |Amazon App Store (for great daily free apps)

Included RandomExtras:

Jaguar Wallpaper (No-Scroll)



  • Rooted Galaxy SIII
  • TWRP (Preferably) or CWM Recovery


Rooting Your Phone:

  • Option A: ……….
  • Option B: ……….



1. Backup your device via CWM Nandroid, MyBackup, Titanium, etc.
2. RandomROM’s installer will
3. Enter ClockWorkMod Recovery.
4. Flash the latest RandomROM Jaguar.
5. Reboot and enjoy your blazing fast, battery-sipping Galaxy.


1.  None Yet


  • Heavily recommended is to disable data syncing (not 3G data) once you’ve imported your contacts and to reduce screen brightness to the lowest comfortable level, disabling auto brightness.
  • Advanced Task Killer has been included and pre-configured. Simply place a widget on one of your homescreens, and click it to quickly and safely close all erroneous apps/services. Auto-kill is disabled and an ignore list is included.
  • Adaway is included, but may need to be run to check for updates.


  • The default installation is Full.
  • If you don’t know what’s stripped in the Lite version, you probably want Full.
  • If you want to overclock, check out Tegrak , SetCpu, or VoltageControl.
  • If you notice any major issues like Force Closes, wipe and reinstall.

The following can be downloaded and flashed through CWM:

  • Default Theme

  • Green Theme

  • Sprint Carrier Patch [Default Theme Only]

  • Default Wallpaper

If you like my work, donate for diapers!

4.1.1 LJ7 Jaguar 2.0  (11/8/2012 )

  • Kernel: Stock Rooted
  • new official android version “jelly bean”
  • custom mms theming
  • call block menu enabled
  • —-

4.0.4 LI3 Jaguar 1.0  (10/9/2012 )

  • Kernel: Stock Rooted
  • battery full notification removed
  • custom mms theming/black
  • call block menu enabled
  • call recording enabled
  • am/pm removed
  • first official launch
  • —-

4.0.4 LG8 Jaguar 0.3  (9/25/2012 )

  • Kernel: Stock LG8 Rooted
  • 3-in-1 reboot options (hotboot removed)
  • 1X/3G signal modification
  • lots of features
  • first attempt
  • —-


First and foremost, a huge thanks to the guys at Samfirmware for making this possible!
This rom incorporates the work of many AndroidCentral and XDA users.
Huge thanks to the development community.  This is Open Source!


4 responses to “[4.1.2] Jaguar

  1. RK – question… i hope not too of a noob one… I’m trying to resolve some recording noise issues on the S3… Voodoo sound fixed nicely on the EPIC, but no solutions so far on S3.

    Would any of the alt kernels likely work with Jaguar 4.1.1? I was initially hopeful for the SiyahKernel S3 v1.9.1, but now see that he’s moved on to the JB Samsung 4.1.2 specs… but was wondering about the Boeffla-Kernel http://www.boeffla-kernel.de/index.php/about-the-kernel … it says its very close to stock kernel (but added some sound control features)

    I wanted to ask for your input before I risk bricking the phone… Thanks! – EB

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