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[KERNEL] SpeedMod S3 Jelly Bean [ K2-13 SDS_Fix ROOT BRIGHTNESS+ ]

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Senior Member
Oct 26, 2011
I used speedmod on my s2 and considering it for my s3.

How is the battery life compared to stock android 4.1.2 ?

Can some post pics to show wakelock behaviour. Screen time and 'since unplugged time'.

Repsonses will be greatly appreciated :beer:

Sent from my GT-I9300 using xda app-developers app


Senior Member
Sep 9, 2010
Hi, new "GT-I9300_JB_Opensource_Update11" has been released recently, do you have plan to update?

Some developers say this version has a faster system response speed than ever

Yes please, could you update with the new "Update 11"?

PS: Hardcore, there are some rumours that say they¡re gonna skip 4.2.2 and update directly to 4.3 :confused:

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  • 137
    Hi guys,

    This is the SpeedMod kernel for the Samsung Galaxy S3 GT-I9300.
    This kernel is for Samsung Android Jelly Bean ROMs only.

    SpeedMod's core features are:
    - Super stable: No undervolting, overclocking or potentially unstable modifications
    - Fast and smooth: Compiler and code optimizations
    - Excellent battery life: Remove unecessary logging and debugging

    Download links: >>> CLICK HERE for more info and the DOWNLOAD links.
    >>> CLICK HERE for the Frequently Asked Questions list.

    >>> CLICK HERE for the CHANGELOG.
    >>> CLICK HERE for the DOWNLOAD links.

    Current features:

    - Automatically installs root (SuperUser and su) but can be disabled

    Screen and misc tweaks:
    - Auto-brightness increased slightly (in low-to-mid light)
    - MDNIE screen sharpness and color tuning (improves text readability)
    - init.d, TUN, CIFS, IPV6 Privacy support
    - Fixed freeze on FC problem with Samsung ICS & JB ROMs

    - CPU governor tweaks: increase responsiveness
    - IO tweaks
    - Read ahead tweaks
    - Compiled with optimizations using CodeSourcery GCC toolchain
    - Optimized GPU DVFS
    - ARM CPU topology support
    - SCHED_MC multi-core aware scheduler

    Turned off unnecessary logging for better smoothness and efficiency:
    - Disabled Android Debug Logger / logcat
    - Disabled Samsung debug
    - Disabled various kernel debugging, statistics and tracing options

    Instructions on how to enable logcat and disable auto-root are in the 3rd post (below).
    Didn't even say goodbye. :(

    Sent from my GT-I9300

    I'm still here guys. Still using the S3 as my main phone. Just been busy with work and nothing really to update. Maybe when 4.2 roms and sources are out.
    - Updated to JB_Opensource_Update9 source code

    The Update9 source code release seems to have a fix for a specific memory leak.
    - Updated to JB_Opensource_Update7 soure code
    - Update7 source code includes the eMMC sudden death / SDS fix
    - Moved to SuperSU (Existing Superuser app will be auto-replaced with SuperSU)
    - Implemented fix for "freeze on FC (Force Close)" problem caused by dumpstate