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Rock solid stability and great performance for your SGH-I777.
Features:
WIFI Driver ported from SG4
New Mali V2 Video Driver
Overclocking up to 1400 MHz
Be very careful with voltage settings. UnderVolting usually causes bad things..
Slide2Wake is now automatically disabled while on a call. (Modded for less battery drain)
Native USB Tethering.
Native Wi-Fi Tethering
File systems support: Ext3/4, FAT32, NFS, CIFS, NTFS
Added tweaks to increase I/O Speed.
Added tweaks to increase CPU speed
Removed all the debuggers
Better picture quality thanks to camera tweaks
BLN without Wakelock – see STweaks BLN tab to activate.
Touch Keys Light change with the screen brightness
MMC_CAP_ERASE not present
Sound boost controls in STweaks.
Added mdnie interface and made hardcore’s sharpness tweaks optional
5 GPU FREQ Steps from 108Mhz to 520Mhz
Ultra KSM from 3.9.y kernel.[/LIST]
Installation Instructions:
NoSwap – for Cooked and AT&T stock JB
MicSwap – for ShoStock3 and other ported i9100 ROMs
AOSP – for any AOSP ROM, such as CM10.2, PACman, etc
AJK v4.6 NoSwap
MD5 Sum: 0cac04b3d3082af24f361da85184fd11
AJK v4.6 MicSwap
MD5 Sum: b6e111061e22736f71e0dbd5092ecbaa
AJK v4.6 AOSP
MD5 Sum: 89d9d833495d2b06509c6d9dbbeb7e2c
NOTE: Changelog information for builds prior to v3.2 was somehow deleted while the thread was closed (at my request…) for a short while.
I will try to recover the lost changelog information and add it as I can.
Changelog:
Fixed an issue where the touchscreen sometimes becomes unresponsive
Sync’d CM10.x init files with CM sources
Set ROOT to default ON for CM10.2
Updated ZZMOOVE to v0.7d
v4.6
Tuned battery & performance profiles a bit
Tweaked CortexBrain
Fixed a small profile bug
Updated ZZMOOVE governor
-new ZZMOOVE governor is VERY smooth (smoothest gov I have found), uses slightly more battery than Hyper.
v4.5
Nice new boot logo by Teknodad1974
Recovery background remains plain black to make it easier to read recovery text
Fixed a small issue with recovery
Added exFAT support
Updated governors & i/o schedulers
Updated profiles
Updated Stweaks
Added the Dorimanx implementation of CPU Voltage Groups. This will let people see why some phones UV easily and some cannot UV.
v4.4
Added support for Android 4.3
Some code cleanup
Tweaked touchscreen and display to improve smoothness
v4.3
Reverted part of the frequency cleanup as it caused a slight hesitation in the UI
v4.2
Bugfix – corrected CPU frequency table
Boots & settles in much faster now
v4.1
Undervolting has been given a reprive thanks to topiratiko & samprocat
Use UV with CAUTION and expect no support when using UV
CPU frequency table has been tuned down to 6 primary frequencies for efficiency
CPU voltages have been corrected in the profiles to account for the new frequency table
Fixed mic swapping (MicSwap version only, obviously)
Due to the changes made to the CPU frequency table and the CPU voltage table,
it is CRITICAL that you follow the installation instructions exactly as outlined here.
S959G users please ask for assistance from more experienced S959G users
if you need assistance..
PLEASE do not just ignore the need for profile resets!
This version will start off slow (possibly VERY SLOW) and will speed
up as it settles in. First boot can take a LONG time. This is both normal and expected.
v4
Project “SMOOTH UI” is now complete!
You should notice better performance in every way. If not, you’re doing something wrong!
Fixed poor performance on Samsung ROMs – they did not like the OOM settings in v3.9 .
Any trouble reports that do not include a logcat will be ignored.
v3.9
New boot logo by Teknodad1974
Corrected the context on the Stweaks->Screen tab
Removed BLN “blink” and “fade” options as they do not work on our phones
Added a new “AJK Tweaked” OOM profile (Stweaks->Memory tab)
Most people will see a nice improvement from the new OOM profile
Slide2wake fix should be functional now
Ad-Block is expanded & updated. This is a complete ad blocking solution now
Ad-Block can be added/removes d in Stweaks->Other
Ad-Block can be updated automatically via setting in Stweaks->Other
v3.8
AKA: THE ONE
Nightmare has been tuned and should be much more stable now
Added ZZMOOVE governor by ZaneZam (a great battery or sleep governor)
New topiratiko tuned profile
MAJOR smoothness improvements made by Project “SMOOTH UI”
Re-added Touchscreen Sensitivity setting in Stweaks
Added touchscreen revision detect button in Stweaks -> Screen
Added additional touchscreen settings for different touchscreen type
Many thanks to the testing team for working hard and relaying good
information for me to build upon. 
Special thanks to topiratiko for providing invaluable information
and letting me bug him into the wee hours of the mornings
testing new kernels. 
v3.2
WiFi toggle bug is a thing of the past (has been for weeks now on AJK actually…)
Slide2Wake is now disabled while you are on a call.
New Mali V2 drivers – best graphics performance on the i777.
S4 code implemented for WiFi.
I will have to populate this later as it somehow got removed while
my thread was locked for maintenance.
Some suggested reading:
A Comprehensive (but not by any means definitive) Guide to Wakelocks
Please remember that this kernel was created for my friends & family to use, and I also share it here.
You are not obligated to use it. If you do decide to use this kernel, that does not give you the right to be disrespectful.
Please report any bugs that you find, and be sure to include a logcat…it is impossible to troubleshoot without it.
Reporting something 1 time is sufficient. If someone else has already reported it, you do not need to re-report the same bug.
Remember the 2 primary rules here on XDA are:
1) Be respectful.
2) Use the search functions – both the XDA search and Google.
If you are experiencing issues that no one else is having, then it is not the kernel at fault….
Special thanks to:
Entropy512 (CyanogenMod, kernels, much more for the community)
Gokhanmoral (Siyah Kernel)
Dorimanx (Dorimanx Kernel)
@razen_kain for all the feedback & support (to everyone here)
@mr-cook for all he does for the SGSII community
@topiratiko for his tireless testing, great feedback & support and the topiratiko profile
@4-2ndtwin for his tireless testing, great feedback & support
@samprocat for his tireless testing, great feedback and tremendous support.
And a special thanks to all the donators. Your donations are greatly appreciated!
ROM Devs:
I request that anyone who includes this kernel in a firmware release does the following out of courtesy:
1) Link to this thread
2) Clearly indicate in your firmware changelog which AJK version is included in your firmware release. This lets users identify whether a fix is present in the kernel they’re using or not.
Kernel source new repo available here.
Use the “master” branch.
Compiled using the supplied linaro 12.x toolchain.
Touchscreen Tuning process
1. Open ExTweaks
2. Select Screen tab
3. Go to “Batt Move Filter”, increase it BY ONE and apply
4. Test it, if it still stutter, increase ONE STEP ONLY and apply
5. Repeat step 4 till the stutter/jitter is gone. Don’t set it too high as it’ll result the touchscreen capability lost
6. If “Batt Move Filter” is OK without any jitter again, connect your charger and go to “Chrg Move Filter”
7. Repeat step 4 till you satisfied and again: DON’T SET IT TOO HIGH, ONLY INCREASE TILL THE JITTER/STUTTER IS GONE
Do this at your own risk!
If you lost the touch capability caused by too high value then you will need to reset ExTweaks profile in recovery.
I can say its different for each device as the test shown:
-My S2: Batt Filter 16 & Chrg Filter 50, stutter/jitter gone completely, below that value the screen is stuttering/jittering.
-My son’s S2: Batt Filter 13 & Chrg Filter 46, stutter/jitter gone completely, below that value the screen is stuttering/jittering.
-My daughter’s S2: Batt Filter 14 & Chrg Filter 48, stutter/jitter gone completely, below that value the screen is stuttering/jittering.
Important information for anyone having issues with any version of AJK:
Be sure that you have followed the installation instructions exactly as they have been given.
Please note that if you are experiencing issues that no one else is having, then it is not the kernel at fault….