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Tweak Android for Performance, and increase battery by Saving Power Usage with Sysctl

Here I will post tweaks as I find them to optimize Android.
When echoing in the following sysctl settings they do not remain after reboot, so we can adb remount then create a sysctl.conf file on our pc's with these settings, then ./adb push sysctl.conf /etc/ then the kernel should apply the settings every reboot
For examples of a sysctl.conf use google: Sysctl.conf Examples
Open a Terminal and Execute these commands as root
Tweak virtual memory to conserve power when running on battery:
Code:
echo 0 > /proc/sys/vm/swappiness #can be ignored if you dont use swap
echo 0 > /proc/sys/vm/dirty_expire_centisecs #can be ignored if you dont use swap
echo 0 > /proc/sys/vm/dirty_writeback_centisecs #can be ignored if you dont use swap
echo 60 > /proc/sys/vm/dirty_background_ratio
echo 95 > /proc/sys/vm/dirty_ratio
Tweak virtual memory for running on Charger
Code:
echo 0 > /proc/sys/vm/swappiness #can be ignored if you dont use swap
echo 3000 > /proc/sys/vm/dirty_expire_centisecs #can be ignored if you dont use swap
echo 500 > /proc/sys/vm/dirty_writeback_centisecs #can be ignored if you dont use swap
echo 10 > /proc/sys/vm/dirty_background_ratio
echo 40 > /proc/sys/vm/dirty_ratio
Detecting apps/services that hog the battery/cpu:
Also while on battery, you should stop all applications that don't really stay idle when you're not using them, if you want to find which apps arent really staying idle you can:
Code:
strace -p $(pidof yourapp) # for all your running applications
ps aux | awk '{print$10,$11}' | sort -n # will list all running softs sorted by used cpu time
By default when Linux runs out of memory it goes through the process list and starts killing off processes that it thinks are using too much memory. This sysctl makes Linux kill the runaway process that made the system run out of memory instead, which is usually what you want.(this will also reduce cpu time and increase battery usage).
Code:
sysctl -w vm.oom_kill_allocating_task=1
Credit: ccpp0
vfs_cache_pressure to 10 , gives more mem to cache fs dentry and inode to save cpu
At the default value of vfs_cache_pressure = 100 the kernel will attempt to reclaim dentries and inodes at a "fair" rate with respect to pagecache and swapcache reclaim. Decreasing vfs_cache_pressure causes the kernel to prefer to retain dentry and inode caches. Increasing vfs_cache_pressure beyond 100 causes the kernel to prefer to reclaim dentries and inodes.
Code:
sysctl -w vm.vfs_cache_pressure=10
I'll be adding more tweaks for sysctl and basic cmd line tweaks as I find them, also these tweaks would be good integrated into roms, apps, and a power-save widget if anyone wants to get creative.

a few questions
do i enter this into the terminal emulator? also does this only need to be entered in one time? thank you in advance for any help.

great find.. will keep my eye on this thread

david1171 said:
do i enter this into the terminal emulator? also does this only need to be entered in one time? thank you in advance for any help.
Click to expand...
Click to collapse
yes you can enter it in via terminal emulator or ./adb shell, the echo'd settings are not permanent and will reset after reboot, so use the settings to test, then follow the directions to create a /etc/sysctl.conf file to make the settings permanent after you feel comfortable with the settings(if you notice improvement)
defcon

Wow, this is cool, thank you!
Could you maybe add some more comments, I don't really understand what the single commands do. Or some place, where the function of e.g. "dirty_expire_centisecs" is explained?
One more precise question though: If I don't have a swap file on sd, does the tweaking of the swappiness still change anything?
Greetings!

free-sidux said:
Wow, this is cool, thank you!
Could you maybe add some more comments, I don't really understand what the single commands do. Or some place, where the function of e.g. "dirty_expire_centisecs" is explained?
One more precise question though: If I don't have a swap file on sd, does the tweaking of the swappiness still change anything?
Greetings!
Click to expand...
Click to collapse
there is no swap space on G1, so settings related to the swap can be ignored.
echo 0 > /proc/sys/vm/dirty_expire_centisecs
echo 0 > /proc/sys/vm/dirty_writeback_centisecs
never writes out dirty pages ?

free-sidux said:
Wow, this is cool, thank you!
Could you maybe add some more comments, I don't really understand what the single commands do. Or some place, where the function of e.g. "dirty_expire_centisecs" is explained?
One more precise question though: If I don't have a swap file on sd, does the tweaking of the swappiness still change anything?
Greetings!
Click to expand...
Click to collapse
http://tinyurl.com/nlb9ws
Note: The value of vm.swappiness=0 states that no swap space will be used at all, basically it can be ignored if you dont use swap though

defconoi said:
http://tinyurl.com/nlb9ws
Note: The value of vm.swappiness=0 states that no swap space will be used at all, basically it can be ignored if you dont use swap though
Click to expand...
Click to collapse
set vfs_cache_pressure to 10 , gives more mem to cache fs dentry and inode to save cpu "wa".

how do i create a Sysctl.conf file with this script?
i tried the link of examples but all i could find was info about it.
everything else works but when i try
sysctl vm.block_dump=1
i get sysctl: error: 'vm.block_dump=1' is an unknown key
any ideas?

actually ya know what I think we can just disable sysctl all together in menuconfig->Filesystems->Pseudo Filesystems->Proc->Sysctl Support when compiling a new kernel and setting these tweaks right in the kernel.
Says in menuconfig"As it is generally a good thing, you should say Y here unless
building a kernel for install/rescue disks or your system is very
limited in memory."
So I think we can gain some memory disabling this since we dont really need it

disable /dev/mem
Also I think we can disable the Memory Device Driver, /dev/mem, it says it can be disabled for security conscious and can be disabled on memory tight systems, which we are definitely memory tight plus there's just no valid app that uses /dev/mem on actual memory.
Other popular users of /dev/mem are rootkits and the like.
(note: mmap access of memory via /dev/mem was already not allowed since
a really long time)
People who want to use /dev/mem for kernel debugging can enable the config
option.

tshizzle said:
how do i create a Sysctl.conf file with this script?
i tried the link of examples but all i could find was info about it.
everything else works but when i try
sysctl vm.block_dump=1
i get sysctl: error: 'vm.block_dump=1' is an unknown key
any ideas?
Click to expand...
Click to collapse
I have the same exact questions that u do

Unix98_ptys
Also do we really need UNIX98_PTYS enabled?
We can also use this to conserve memory if we dont need this as well...
menuconfig says:
"Unix98 PTY support UNIX98_PTYS
A pseudo terminal (PTY) is a software device consisting of two
halves: a master and a slave. The slave device behaves identical to
a physical terminal; the master device is used by a process to
read data from and write data to the slave, thereby emulating a
terminal. Typical programs for the master side are telnet servers
and xterms.
Linux has traditionally used the BSD-like names /dev/ptyxx for
masters and /dev/ttyxx for slaves of pseudo terminals. This scheme
has a number of problems. The GNU C library glibc 2.1 and later,
however, supports the Unix98 naming standard: in order to acquire a
pseudo terminal, a process opens /dev/ptmx; the number of the pseudo
terminal is then made available to the process and the pseudo
terminal slave can be accessed as /dev/pts/<number>. What was
traditionally /dev/ttyp2 will then be /dev/pts/2, for example.
All modern Linux systems use the Unix98 ptys. Say Y unless
you're on an embedded system and want to conserve memory."

jroid said:
I have the same exact questions that u do
Click to expand...
Click to collapse
ahhhh it looks vm.block_dump=1 isnt a valid sysctl option, disregard that, gonna remove it from the first post

defconoi said:
ahhhh it looks vm.block_dump=1 isnt a valid sysctl option, disregard that, gonna remove it from the first post
Click to expand...
Click to collapse
yea. all the other ones work though. how would we make the file??

jroid said:
yea. all the other ones work though. how would we make the file??
Click to expand...
Click to collapse
adb remount
create sysctl.conf on your system
then adb push sysctk.conf /etc and the settings will be set every reboot.

defconoi said:
adb remount
create sysctl.conf on your system
then adb push sysctk.conf /etc and the settings will be set every reboot.
Click to expand...
Click to collapse
ok so it would be something like this?
adb remount
adb shell
mkdir /system/sysctl.conf
adb push sysctl.conf /system/etc

jroid said:
ok so it would be something like this?
adb remount
adb shell
mkdir /system/sysctl.conf
adb push sysctl.conf /system/etc
Click to expand...
Click to collapse
no, adb push sysctl.conf /etc

this isn't working. i created the dir sysctl.conf in /system then tried adb pushing it but says no such file or dir. then i tried in adb shell cp /system/sysctl.conf /etc
it says cp: omitting sysctl.conf is a directory"
couldnt i just create it directly in /etc?
like this mkdir /system/etc/sysctl.conf

defconoi said:
no, adb push sysctl.conf /etc
Click to expand...
Click to collapse
on android /etc is within the /system/etc directory.

Allowing non market apps to be installed on locked down phones (backflip)

Hey guys,
My uncle works for Motorola and gave me a prototype phone (which I believe will be called the Motorola Sage, and it's model number is MB508. This thread isn't really about that, I can't post pictures because I don't want to get anyone in trouble). This phone is an AT&T phone, complete with AT&T startup screen, uninstallable AT&T apps and of course the inability to install non-market apps. Also it's running Android 2.1.
Now, I seem to have default root access to this phone. I'm assuming the file system is very similar to that of the Backflip (which I was previously using until I received this one). From what I've read and learned from poking around in /system/etc, non-market apps are blocked by two config files. These are:
/system/etc/motorola/com.android.providers.settings/secure.mkitso
Code:
# cat secure.mkitso
cat secure.mkitso
location_providers_allowed=network,gps
wifi_on=0
data_roaming=1
bluetooth_on=0
install_non_market_apps=0
usb_mass_storage_enabled=1
and
/system/etc/motorola/com.motorola.android.providers.settings/settings.mkitso
Code:
# cat settings.mkitso
cat settings.mkitso
mms_maximum_message_size=614400
auto_scan_on_flip=true
sms_pref_key_emailgateway_num=121
Single_Digit_Dial_Enabled=True
roaming_icon=0
dun_enable=1
force_only_market_apps=1
Bluetooth_Dun_Enabled=true
mms_x_wap_profile_url=http://uaprof.motorola.com/phoneconfi/MotoMB51/profile/MotoMB511.rdf
sms_pref_key_to_email=1
Okay, now it would seem that it's a simple matter of changing the values for "force_only_market_apps" to 0, and "install_non_market_apps" to 1. I did this, and let me quickly tell you how I did it.
- Make /system writable: mount -o remount,rw -t yaffs2 /dev/block/mtdblock4 /system
- Copy mkitso files to sdcard
- Edit mkitso files using Notepad++, changing the values as stated above
- Copy mkitso files back to their original directories
- chmod 644 to the files in order to keep their original permissions
- Make /system read only again: mount -o remount,ro -t yaffs2 /dev/block/mtdblock4 /system
- Restart the phone
However, this did not work, as I still get the warning when I try to install a non-market app.
I was wondering if anyone had any ideas on this, as when the Backflip gets rooted this is one thing that I'm sure we would like to know.

Have you tried adb install? I've heard that works on Backflops. You could download the app to your PC,and install it using "adb install PATH/TO/APP.APK"

Thanks, I know that I can use adb to install non market apps, but I was looking at how to change this setting on the phone. Since I have root on my phone, I figured it was possible.

Check out some of these terminal apps found in /system/bin/ directory of the backflip.Maybe they will help you.
Code:
modemlog
chown
check_prereq
dumpsys
qmuxd
rild
dd
port_bridge
installd
minipadut
vmstat
vold
ioctl
mm-audio-native-test
lsmod
id
mm-adec-omxamr-test
notify
getevent
hciattach
dhcpcd
service
cat
system_server
linker
mm-vdec-omxh264-test
mm-adec-omxevrc-test
wpa_supplicant
netstat
mm-adec-omxmp3-test
ls
wipe
iwpriv
stop
log
mm-vdec-omxmp4-test
top
bt_init
app_process
kill
dumpcrash
iwspy
tcmd_engine
sleep
port-bridge
input
chmod
flash_image
wfa_dut
monkey
dmesg
umount
dalvikvm
sh
sync
ptf
mm-jpeg-dec-test
ime
diag_klog
route
ln
batch
fuel_gauge
iwlist
bugreport
insmod
hcid
svc
rmmod
servicemanager
iwgetid
debuggerd
test_diag
am
renice
applypatch
ps
watchprops
sendevent
reboot
mount
mm-adec-omxQcelp13-test
pm
start
ping
busybox
toolbox
df
touchpad
mediaserver
setconsole
loc_api_app
setprop
logwrapper
rm
dvz
hd
ifconfig
rmdir
printenv
getprop
mm-venc-omx-test
fsck_msdos
iwconfig
iftop
bt_downloader
akmd2
sdptool
disp_util
mm-aenc-omxamr-test
newfs_msdos
gzip
cmp
iwevent
mv
smd
mmclog
mknod
mm-adspsvc-test
bt_test_exec
dexopt
date
set_grp_id
i2c
tcmd_sql
recovery
dumpstate
netcfg
surfaceflinger
mkdir
dbus-daemon
mm-adec-omxaac-test
schedtest
mm-jpeg-enc-test
logcat
mm-aenc-omxaac-test
schedtop
fmradio
EDIT:Also there does not seem to be a com.android.providers.settings in /system/etc/motorola/ only com.motorola.android.providers.settings and the file located in that directory is named secure.mkitso and the market app setting is set up like this:install_non_market_apps=0
So there is a slight difference in how the devices are set up and maybe a bit less security on the backflip =)

Thanks for your suggestion, but if you read above I changed the mkitso files without any changes in the behavior of the phone .

I was thinking that since I changed the settings files and they didn't do anything, maybe they will be applied during a hard reset. I'll try that sometime this weekend and report on the results.
The reason I'm asking for help is because I believe that once the Backflip gets rooted, we will need to know how to disable this setting.

I doubt you have root unless it came already rooted (you did make up some **** about a prototype) I honestly think this wont be a hard issue to tackle or work around when root is achieved on the Lackflip...yes I did Lackflip on purpose because of how crippled it is..so spend your time ANNONYMOUSLY sending www.endgadget.com some nice shiney pics of your supposed prototype codnamed:
"Motorola Sage"

I'm not sure why you're so aggressive, Honestly77. I'm able to "su" in shell and I'm able to modify files in the /system folder, so unless I'm mistaken (which I very well might be), then I believe I have root on the phone.
It is a prototype phone for testing, so it coming rooted isn't too farfetched at all.
When the Backflip does get rooted yes, this will be an easier issue to solve, but I'm trying now. If we're able to figure it out now then no time will have to be devoted to it when the Backflip is rooted.

Alright, I just did a hard reset and it activated a menu toggle under Settings -> Applications -> "Unknown Sources: Allow install of non-Market applications" which can be checked or unchecked.
To summarize, if you have root on your phone, edit secure.mkitso and settings.mkitso and change the variables, then you need to hard reset the phone.

hey met3ora, I too have a backflop, I am currently trying to sell my soul to obtain some sort of root or even simple control over the device, I have 2 questions for you...
1: using the config files and other software availible on this forum, would it be possible to obtain a workaround to be able to install apps from sd? I'm sure you are well aware that the backflip has no memory and won't even allow market apps to be installed via sd.
my second question (its ok if you don't want to answer as we will find out soon enough)
is: the moto sage, how does it compare to the backflip? no specifics needed just, is it better?
Iv'e seen the photos of the sage that appeared a couple weeks ago and it looks good, just incase we need it you should copy the system files as I'm sure the one AT&T will give us will be on lockdown as well. Thanks!

Honestly77 said:
I doubt you have root unless it came already rooted (you did make up some **** about a prototype) I honestly think this wont be a hard issue to tackle or work around when root is achieved on the Lackflip...yes I did Lackflip on purpose because of how crippled it is..so spend your time ANNONYMOUSLY sending www.endgadget.com some nice shiney pics of your supposed prototype codnamed:
"Motorola Sage"
Click to expand...
Click to collapse
THis thread is old but it still helped me with a bravo. Thanks OP.
And to this guy above, wtf, why be such a douche? You are also clearly an idiot or you would know that engineering models always have root.
Calling the OP a liar was way out of line and you should apologize.

[DEV] Script for tweaks (version 1.02) 18-12-2010

Here is a script i've made (had nothing to do, so...).
Phone must be rooted and have busybox installed.
What first menu looks like:
1 - enable/disable hardware acceleration
2 - enable/disable jit
3 - enable/disable stagefright player
4 - change heapsize
s - show status
r - revert to original configuration
q - quit (don't forget to reboot your phone!)
==================
enter your option:
Click to expand...
Click to collapse
Download:
http://www.4shared.com/file/gApTB6EG/tweaks.html
md5 b0865d9de67a82215913512cb644211d
Just copy the file to your sdcard. Then in a terminal emulator run:
su
cat /sdcard/tweaks > /data/tweaks
rm /sdcard/tweaks
cd /data/
./tweaks
If it doesn't run, type first:
chmod 755 /data/tweaks
Additional notes:
Script does not work if run from sdcard, must be in /data/ or /system/ (this one goes to allsalvati for testing)
---
If anything is wrong i will fix it, but only if you give me feedback
If you know any good tweaks, say it and i'll add them.
---
Changelog:
version 1.02:
backup/restore added
version 1.01d:
working again. sorry for the mess...
version 1.01c:
nothing new. just rearranging code
version 1.01b:
messages were not staying in output. fixed
version 1.01a:
small fix. v1.01 was not working
version 1.01:
added status menu

ruigui said:
Here is a script i've made (had nothing to do, so...). Phone must have busybox.
Download:
http://www.4shared.com/file/gApTB6EG/tweaks.html
md5 ea568c399c67ecd87db0dd790cdf0e93
Just copy the file to your sdcard. Then in a terminal emulator run:
cd /sdcard/
./tweaks
If it doesn't run, type first:
chmod 777 /sdcard/tweaks
Please give me some feedback. I don't own the phone so i can't test.
Click to expand...
Click to collapse
what the script does?

So script should be able to do:
enable/disable hw acceleration
enable/disable jit
enable/disable stagefright player
change heapsize

Yes. For now it's what it does.
The ideia is to be able to enable/disable a certain tweak, without reflashing zips, and rewriting files in phone.
But i need some feedback to know if it is working. I can't test it.
It will only change values in /data/local.prop, nothing else.

It seems that it is well written, so I will try that and let you know what's happened.

Thanks for testing. I'm still waiting to have some money so i can buy this phone...
Meanwhile, i'm "playing" with ROMs and files. I'm not good at scripting, but i'm trying to learn while doing something useful.

How much did you increase the heap size?

domenic_s said:
How much did you increase the heap size?
Click to expand...
Click to collapse
I didn't increase it. Script shows this message:
"default=24, recommended=32"
"enter new heapsize value (1-64): "
You can enter any value between 1 and 64.
If you enter any other value, or a string, character, symbol... script will show this message:
"wrong value"
"please input a value between 1 and 64"

For those who don't feel like editing this themselves this is great. Thanks for releasing it for people to try out more tweaks on stock ROMs.

i'm trying to run this script and gives me the following message: ./tweaks: permission denied
Before anything i typed su, then chmod 777 and it gave me error.

It should work be working...
Anyone else confirms this issue? Is this script running or not?
If it is working and there are more tweaks, i can easilly add them to the script.
If this is an isolated case, i really can't help. I don't own an android phone (yet), so i can't test....
allsalvati do you have busybox installed?

No, i don't.
Sent from my LG-P500h using XDA App

That may be your issue.
You must mount /system/ as read-write, then copy busybox binary to /system/xbin/, then run these commands in terminal emulator:
su
cd /system/xbin
/system/bin/chmod 755 busybox
./busybox --install -s /system/xbin
After that you can mount /system/ as read only again, and reboot your phone.
I don't know if there is another way to install it that is easier.

I downladed busybox installer from market and the app says that was installed. The. /tweaks gives me the same message.
How do i test if busybox was installed right?
Sent from my LG-P500h using XDA App

I found this:
That is a problem, you cannot chmod a script to executable on the SD card. (well some things can, but 99% no) the system is designed to prevent u executing scripts from an SD card
cp it to /system/xbin or /system/bin.
Or if u hate to see it in system', use /data/
THEN chmod it. should be fine to run
Click to expand...
Click to collapse
Try to copy the file to /data/ (so you don't mess with /system/), and then try to run it with:
cd /data/
chmod 777 tweaks
./tweaks
It should not need to be run as root

Moved to /data and worked.
I changed heap size to 32 and disabled hardware accelaration just to test.
With hw acc - 981 on Quadrant
Without - 820
So i think this is working.
Perhaps you should print the values so the user can see what is enabled or not before apply.
Thanks for your help
Sent from my LG-P500h using XDA App

Can you test something for me?
Make sure you have hardware acceleration disabled, and reboot you phone.
Then open terminal and run:
getprop | grep hw (see what it outputs)
then run the script, enable hardware acceleration on it, but DON'T reboot your phone yet.
Then exit script, and run again:
getprop | grep hw
Has the value changed, or is it the same?
I need to know if the system assumes immediately any changes (although they may not be functional until reboot).
This is needed to work on your request.
allsalvati said:
Perhaps you should print the values so the user can see what is enabled or not before apply.
Click to expand...
Click to collapse
I'll work on that and post an update after someone tries what i asked above.
Thanks for testing
EDIT: to test benchmarks, enable/disable jit. It gives greater differences in values

I tried what you say and both outputs are the same:
$getprop | grep hw
[debug.sf.hw]: [0]
[hw.keyboards.65537.devname]: [7k_handset]
[hw.keyboards.65540.devname]: [thunder_keypad]
[hw.keyboards.65541.devname]: [touch_mcs6000]
[hw.keyboards.65542.devname]: [atcmd_virtual_kbd]
Edit: Tested disabling JIT and it worked. Linpack Before 7.35 - After 4.3

So i can't rely on getprop to check current values...
If anything is changed, getprop won't give the right output till reboot.
Damn... Script was almost updated. Now i must find a new way and redo this section.
Thanks for testing again
EDIT:
New version for download at first post. status menu added.
I think it's all ok.

It seems work fine on my phone. But I can't see the status. When I choose to see current status or status after reboot, the screen of my emulator returns too fast to the selection menu (show curent status or after reboot) and I can't see anything !

[Guide]How I tweak, mod and hack my Defy

This thread is mostly to remind myself what needs to be done after a reflash. I reflash a lot. Tinkering, coding and hacking does *not* mate well with my ADHD (Attention Deficit ahh whatever), so I often find myself having to, pardon my french, unfuck my gear. Most of this thread will be links to the great work others have done, I'm just piling together the stuff I use. If you like your android experience to be nice and snappy, you might like these mods too. These steps work for me, your mileage may vary. If you screw something up, it's your own fault for taking advice from strangers over the Internet. But try asking for help here on XDA, somebody will most likely be able to help you.
So, either you've just unpacked your Defy or you have just had to flash an SBF after screwing something up.
Edit: 01/01/2011: Have added a few bits so the stuff below now applies to the 2.34.1 rom as well
0) Install LauncherPro
- Or ADW.Launcher, HELauncher or whatever you prefer. Press the Home button and set the new launcher as default.
1) Root the damn thing! Download Z4Root.apk here. You'll need to allow installation of non-market apps, as well as enabling USB debugging. Go to Settings -> Applications, tick the box for "Unknown sources" and go to Development to enable USB debugging. A file manager should be included in the stock rom, otherwise get one (I prefer ES File Explorer) from the Market. Once you have your file manager, dig up the z4root.apk you just downloaded, install it and run the app, press the appropriate button to root the phone and watch it reboot.
2) Get recovery!
The custom recovery for the Defy is described here. Mad props to Tenfar for his work, please buy him a beer, he's earned it. Here's the APK you'll need. Using the same process as for the Z4Root app, install and run the recovery system app. Press the "Install recovery system" button.
3) Get JIT'tery and deodexed
Superb work by Higgsy and Antibyte! They've not only gotten JIT (jfgi, mate) to run on the Defy, they've zipped it up nicely with the deodexed /system files from Paul at Modaco.com so you can all just install them as a zip file in one go. 2.21 Roms: Download the nicely packaged zip here, if you're running the 2.34.1 rom, get this version instead. Save the file to your SD card and remember where you put it.
4) Backup everything we've done so far
Start the System Recovery App and do a Recovery Boot. When booting into recovery, select Backup/restore and do a backup. I you have installed a bunch of apps, made a lot of changes to your settins, you might want to do a seperate backup of that (but not the rom), using Titanium backup from the Market.
5) Apply the coolness from step 3
After doing a backup, wipe all user settings as well as the Dalvik cache. Then select "Install zip from SD card" and install the zip you downloaded in step 3. Wipe alle settings and the cache again. Reboot when done. Note: The wiping may not be necessary, but not doing it could screw something up and have you back at re-flashing an SBF to your phone...
5.1) Re-root, using Z4Root.
Fire up the app and press "permanent root".
6) Weed out the bloat
This bit assumes that you have ADB or MotoDev studio installed and can connect to your Defy. If not? Search the forums. - Or read the US guide for trimming the Defy, tons of info right there, thanks a lot to Rob-T for elaborating many of the steps!
Assuming you have ADB fired up (or MotoDev Studio, which I prefer):
Gain root access:
Code:
su
Mount the /system partition with write access:
Code:
mount -o rw,remount -t ext3 /dev/block/mmcblk1p21 /system
Switch to the /system/app dir:
Code:
cd /system/app
Now rename the apps you don't want: Thanks to NaeNee for proof-reading this hideous blob of commands!
Code:
mv AdService.apk AdService.rem; mv ArcPhotoworkshop.apk ArcPhotoworkshop.rem; mv ArcVideoEditorLite.apk ArcVideoEditorLite.rem; mv BlurEmail.apk Bluremail.rem; mv revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.apk revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.rem; mv BlurSNMessagingEngine.apk BlurSNMessagingEngine.rem; mv FBAndroid-1.3.2.apk FBAndroid-1.3.2.rem; mv Kindle-1.0.2-OEM-SingleSign.apk Kindle-1.0.2-OEM-SingleSign.rem; mv MySpace.apk MySpace.rem; mv StickyNoteWidget.apk StickyNoteWidget.rem; mv SocialMessaging.apk SocialMessaging.rem; mv Swype.apk Swype.rem; mv BlurUpdater.apk BlurUpdater.rem; mv CarDock.apk CarDock.rem; mv ContactsUnconnected.apk ContactsUnconnected.rem; mv amazonmp3_1.8.19_signed_zipaligned.apk amazonmp3_1.8.19_signed_zipaligned.rem; mv esmusica_2_0_0012_embed_Signed_2010-04-13_11-05-17.apk esmusica_2_0_0012_embed_Signed_2010-04-13_11-05-17.rem; mv Fota.apk Fota.rem; mv FriendFeed.apk FriendFeed.rem; mv HelpCenter.apk HelpCenter.rem; mv hiphopofficial_2_0_0012_embed_Signed_2010-04-13_11-08-31.apk hiphopofficial_2_0_0012_embed_Signed_2010-04-13_11-08-31.rem; mv truecountry_2_0_0012_embed_Signed_2010-04-13_11-06-12.apk truecountry_2_0_0012_embed_Signed_2010-04-13_11-06-12.rem; mv KPT.apk KPT.rem; mv HomeSyncWizard.apk HomeSyncWizard.rem; mv LiveWallpapers.apk LiveWallpapers.rem; mv LiveWallpapersPicker.apk LiveWallpapersPicker.rem; mv MagicSmokeWallpapers.apk MagicSmokeWallpapers.rem; mv MessagesWidget.apk MessagesWidget.rem; mv NewsWidget.apk NewsWidget.rem; mv Protips.apk Protips.rem; mv QuickContactWidget.apk QuickContactWidget.rem; mv Quickoffice_BasicViewer_2.0.42.apk Quickoffice_BasicViewer_2.0.42.rem; mv Quickoffice_BasicViewer_2.0.52.apk Quickoffice_BasicViewer_2.0.52.rem; mv revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.apk revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.rem; mv SocialMessaging.apk SocialMessaging.rem; mv StatusWidget.apk StatusWidget.rem; mv Stk.apk Stk.rem; mv ToggleWidgets.apk ToggleWidgets.rem; mv VisualizationWallpapers.apk VisualizationWallpapers.rem; mv UniversalInbox.apk UniversalInbox.rem; mv WeatherWidget.apk WeatherWidget.rem; mv WorkContacts.apk WorkContacts.rem
EDIT: NaeNee experienced a problem with the messaging app just closing (no FC or errors) after this... Update: This is caused by deleting or renaming BlurEmailEngine.apk, so it is no longer removed/renamed in the command above.
In case you want to undo the above rename:
Code:
mv AdService.rem AdService.apk; mv ArcPhotoworkshop.rem ArcPhotoworkshop.apk; mv ArcVideoEditorLite.rem ArcVideoEditorLite.apk; mv BlurEmail.rem Bluremail.apk; mv revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.rem revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.apk; mv BlurSNMessagingEngine.rem BlurSNMessagingEngine.apk; mv FBAndroid-1.3.2.rem FBAndroid-1.3.2.apk; mv Kindle-1.0.2-OEM-SingleSign.rem Kindle-1.0.2-OEM-SingleSign.apk; mv MySpace.rem MySpace.apk; mv StickyNoteWidget.rem StickyNoteWidget.apk; mv SocialMessaging.rem SocialMessaging.apk; mv Swype.rem Swype.apk; mv BlurUpdater.rem BlurUpdater.apk; mv CarDock.rem CarDock.apk; mv ContactsUnconnected.rem ContactsUnconnected.apk; mv amazonmp3_1.8.19_signed_zipaligned.rem amazonmp3_1.8.19_signed_zipaligned.apk; mv esmusica_2_0_0012_embed_Signed_2010-04-13_11-05-17.rem esmusica_2_0_0012_embed_Signed_2010-04-13_11-05-17.apk; mv Fota.rem Fota.apk; mv FriendFeed.rem FriendFeed.apk; mv HelpCenter.rem HelpCenter.apk; mv hiphopofficial_2_0_0012_embed_Signed_2010-04-13_11-08-31.rem hiphopofficial_2_0_0012_embed_Signed_2010-04-13_11-08-31.apk; mv truecountry_2_0_0012_embed_Signed_2010-04-13_11-06-12.rem truecountry_2_0_0012_embed_Signed_2010-04-13_11-06-12.apk; mv KPT.rem KPT.apk; mv HomeSyncWizard.rem HomeSyncWizard.apk; mv LiveWallpapers.rem LiveWallpapers.apk; mv LiveWallpapersPicker.rem LiveWallpapersPicker.apk; mv MagicSmokeWallpapers.rem MagicSmokeWallpapers.apk; mv MessagesWidget.rem MessagesWidget.apk; mv NewsWidget.rem NewsWidget.apk; mv Protips.rem Protips.apk; mv QuickContactWidget.rem QuickContactWidget.apk; mv Quickoffice_BasicViewer_2.0.42.rem Quickoffice_BasicViewer_2.0.42.apk; mv Quickoffice_BasicViewer_2.0.52.rem Quickoffice_BasicViewer_2.0.52.apk; mv revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.rem revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.apk; mv SocialMessaging.rem SocialMessaging.apk; mv StatusWidget.rem StatusWidget.apk; mv Stk.rem Stk.apk; mv ToggleWidgets.rem ToggleWidgets.apk; mv VisualizationWallpapers.rem VisualizationWallpapers.apk; mv UniversalInbox.rem UniversalInbox.apk; mv WeatherWidget.rem WeatherWidget.apk; mv WorkContacts.rem WorkContacts.apkk
I've noticed that some APK's change depending on the rom, these work for the UK 2.21 rom after applying the JIT/Deodex trick. If you get any errors, please check the exact names of the apk's in your rom:
Code:
ls
It simply renames all the app's I don't want to .rem instead of .apk. Want something back? Rename from .rem to .apk, say if you miss the weather widget:
Code:
mv WeatherWidget.rem WeatherWidget.apk
Update: Pretty slick way of listing the apps in your particular rom can be found here, props to Rob-T for that!
When you're done, reboot:
Code:
reboot
7) Overclocking time!
Install Milestone Overclock from the market and fire it up. Load the module and Press the menu button, go to settings and enter "1000000" as Custom rate and "54" as custom vsel. After pressing OK, pull the slider all the way to the right, so the selected frequency shows up as "1000MHz, 52vsel (Custom)". Click Apply and tick the box for "Autoload on boot"
8) Scaling
Install SetCPU from the market and start it up. Set scaling to "Ondemand" and tick the box for "Autoload on boot" and exit the program. Now it's time to make the vsel correspond to the cpu frequency and save some power, as explained so brilliantly by Higgsy. Buy the man a beer! My setscaling.sh is here, Higgsy's excellent startup script is here. Download both to the root of your SD card. Then connect your phone to your pc and fire up ADB/MotoDev Studio. Once connected to your phone, here's what you need to do:
Code:
su
Code:
mount -o rw,remount -t ext3 /dev/block/mmcblk1p21 /system
Code:
cp /sdcard/setscaling.sh /system/xbin/setscaling.sh
Code:
cp /sdcard/install-recovery.sh /system/etc/install-recovery.sh
Code:
chmod 755 /system/etc/install-recovery.sh
Code:
chmod 755 /system/xbin/setscaling.sh
Code:
mount -o ro,remount -t ext3 /dev/block/mmcblk1p21 /system
Reboot your phone, and it should now be humming along nicely at 300-1000mhz, sipping only the power it needs, without being held down by Motobloat. Again, I didn't come up with any of this, I just wrapped it up
After doing all this, feel free to restore your apps and settings with Titanium backup, but ONLY user apps, don't re-install the old non-optimized system apps. Here's a few screenshots with all my stuff (including locale, pure calendar and other always-running apps) is installed, after running the above tweaks and mods:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
The above is at 1ghz. The phone is nice and snappy, while still getting two days use from a single charge. Here's how 1.2ghz looks:
Happy hacking!

Nice man Someone should buy you a beer for taking the time to package all this together

Very nice try !
I started yesterday something similar but in document way (PDF guide or equivalent).
Maybe to avoid reading the long posts your linking to with fixes of issues and so on, you could maybe just detail a little bit more certain parts...
To give an example of my try with table of content and rooting part:
Table of content:
* How to Root the Defy
- Gain admin access
- Different methods for different versions of ROMs
* How to over clock the defy
- increase processor speed
* How to backup/install recovery
- allow installation of custom ROMs
- allow backup/restore of points of your Defy
* How to clean up system/apps
- uninstall not wanted apps or components
* How to add a theme
- make you phone look better
* How to deblur/deodexe your phone
- remove the installed moto blur to improve performance
* How to factory reset
- remove traces of what you have done
-understand the limits of the factory reset
All contributions are more than welcome to allow the completeness and improvement of this guide!
How to Root the Defy
All changes are done at own risk. I'm not responsible for a bricked phone. If you don't know what you do, stop reading here.
Default Root method for the Defy
This method was originally found by jboogie3 here urlOn modmobile 557910-motorola-defy-root-droid2method.html/url
let’s get started:
1. Put the phone in Debug Mode: Go to Settings > Applications > Development and check USB debugging box.
2. Extract the files from the zip below, connect the phone via USB, and copy them to the phone via ADB like this:
Code:
Code:
adb push Superuser.apk /sdcard/Superuser.apk
adb push su /sdcard/su
adb push busybox /sdcard/busybox
adb push exploit.bin /data/local/tmp/exploit.bin
3. Now we enter the phone's internal shell, also using ADB:
Code:
Code:
adb shell
4. Then we take advantage of the "fake" root exploit:
Code:
Code:
cd /data/local/tmp
chmod 0755 exploit.bin
./exploit.bin
5. Now after that last command you should be back to your normal console, not the phone one, so we need to connect to it again, and doing so we should now see that we have root permissions since the "#" symbol is displayed instead of "$".
Code:
Code:
adb shell
6. Now we mount the /system partition as writable and copy the necessary files there, and set them with the right permissions:
Code:
Code:
mount -o rw,remount -t ext3 /dev/block/mmcblk1p21 /system
cp /sdcard/Superuser.apk /system/app/Superuser.apk
cp /sdcard/su /system/bin/su
cp /sdcard/busybox /system/bin/busybox
chmod 4755 /system/bin/su
chmod 4755 /system/bin/busybox
mount -o ro,remount -t ext3 /dev/block/mmcblk1p21 /system
exit
7. Restart the phone and check if you have ROOT in a terminal by typing the "su" command, or by installing any other app that requires ROOT, and seeing it the SuperUser app pops up.
Rooting.zip > urlexternal url/url
Contains the fake root exploit, SuperUser version 2.3.6.1 and busybox
Alternative easy Root method
1. Download the z4root application on the market or elsewhere, install it
Apply the root / permanent root, that’s all !
Note: not working for all versions of phone, but dramatically easy to do.
Specific UK 2.51 ROM as of 29th of Dec 2010
1. Download attatched files
defy_2.21_boot_only.sbf
2.21boot.zip
defy_2.51_boot_only.sbf
2.51boot.zip
2. Flash the defy_2.21_boot_only.sbf via rsd lite then reboot in to system
Note: Power off DEFY. Then press 'Volume Up' and 'Power' together to boot to loader before you flash the SBF to your DEFY. Debug: If you RSD Lite did not recognize your DEFY, download the USB driver here:
urlmotorola docstools USB_Drivers/url
3. Open you phone's usb debug mode(settings>application>development>usb debug mode), then follow the standard process the root the Defy. When finished, your phone is rooted with superuser
4. Flash back the defy_2.51_boot_only.sbf via rsd lite.
Without links since iam newbee here.
Cheers,
Kribou

Good guide

Kribou said:
To give an example of my try...
...Without links since iam newbee here.
Cheers,
Kribou
Click to expand...
Click to collapse
That's one hell of a long example

yes sorry !
In fact you did a very nice work (that you tested a lot) and I wanted to do a bit the same with different options possible to save newbees from reading hours and hours of forums...
Cheers,
Kribou

Do you use a custom text-messaging application? After renaming some of the apks you suggest, the default text-messaging app closes after opening. Not a force-close, just a open and close without any error.
I'm putting everything back as it was until I've narrowed down the problem.
One more note:
You are suggesting users who want to follow your instructions, buy SetCPU from the market?

naenee said:
Do you use a custom text-messaging application? After renaming some of the apks you suggest, the default text-messaging app closes after opening. Not a force-close, just a open and close without any error.
I'm putting everything back as it was until I've narrowed down the problem.
Click to expand...
Click to collapse
I've had that error before, but not after applying the steps listed in the guide - running the UK 2.21 rom. No custom stuff here, so you've got me worried.
Here's the command to undo the renames:
Code:
mv AdService.rem AdService.apk; mv ArcPhotoworkshop.rem ArcPhotoworkshop.apk; mv ArcVideoEditorLite.rem ArcVideoEditorLite.apk; mv Bluremail.rem Bluremail.apk; mv revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.rem revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.apk; mv BlurSNMessagingEngine.rem BlurSNMessagingEngine.apk; mv StickyNoteWidget.rem StickyNoteWidget.apk; mv SocialMessaging.rem SocialMessaging.apk; mv Swype.rem Swype.apk mv BlurUpdater.rem BlurUpdater.apk; mv CarDock.rem CarDock.apk; mv ContactsUnconnected.rem ContactsUnconnected.apk; mv amazonmp3_1.8.19_signed_zipaligned.rem amazonmp3_1.8.19_signed_zipaligned.apk; mv esmusica_2_0_0012_embed_Signed_2010-04-13_11-05-17.rem esmusica_2_0_0012_embed_Signed_2010-04-13_11-05-17.apk; mv Fota.rem Fota.apk; mv FriendFeed.rem FriendFeed.apk; mv HelpCenter.rem HelpCenter.apk; mv hiphopofficial_2_0_0012_embed_Signed_2010-04-13_11-08-31.rem hiphopofficial_2_0_0012_embed_Signed_2010-04-13_11-08-31.apk; mv truecountry_2_0_0012_embed_Signed_2010-04-13_11-06-12.rem truecountry_2_0_0012_embed_Signed_2010-04-13_11-06-12.apk; mv KPT.rem KPT.apk; mv HomeSyncWizard.rem HomeSyncWizard.apk; mv LiveWallpapers.rem LiveWallpapers.apk; mv LiveWallpapersPicker.rem LiveWallpapersPicker.apk; mv MagicSmokeWallpapers.rem MagicSmokeWallpapers.apk; mv MessagesWidget.rem MessagesWidget.apk; mv NewsWidget.rem NewsWidget.apk; mv Protips.rem Protips.apk; mv QuickContactWidget.rem QuickContactWidget.apk; mv Quickoffice_BasicViewer_2.0.42.rem Quickoffice_BasicViewer_2.0.42.apk; mv revolver_2_0_0012_embed_Signed_2010-04-13_11-07-08.remmv SocialMessaging.rem SocialMessaging.apk; mv StatusWidget.rem StatusWidget.apk; mv Stk.rem Stk.apk; mv ToggleWidgets.rem ToggleWidgets.apk; mv TtsService.rem TtsService.apk; mv VisualizationWallpapers.rem VisualizationWallpapers.apk; mv UniversalInbox.rem UniversalInbox.apk; mv WeatherWidget.rem WeatherWidget.apk; mv WorkContacts.rem WorkContacts.apk
Edit: Just added the undo-rename command to the original guide.

I've put back the package you linked to and messaging no longer closes. I'll stick to renaming only those APKs I know exactly of what their purpose is and only when I'm sure I do not need them - mainly Amazon MP3/DLNA and a few others.
Thank you for the prompt reply

Soren, good guide mate.. Thumbs up.. Just a small point: delete one of your noughts from para 7
Sent from my MB525 using XDA App

elblackmo said:
Soren, good guide mate.. Thumbs up.. Just a small point: delete one of your noughts from para 7
Sent from my MB525 using XDA App
Click to expand...
Click to collapse
Fixed!
Thanks for the heads up, 10 ghz might need a higher vsel...

Thinking about turning this whole thing into a rom... Maybe I should wait until the jit/deodex mod is working for the 2.34 or 2.51 releases?

I'm a bit of a newbie... so does this guide effectively hide MotoBLUR? (as well as prevent it from running to save resources..)
Looks good though. My Defy arrives in a few hours so I'll probably follow your instructions, this is my first Android phone.

Passa91 said:
I'm a bit of a newbie... so does this guide effectively hide MotoBLUR? (as well as prevent it from running to save resources..)
Looks good though. My Defy arrives in a few hours so I'll probably follow your instructions, this is my first Android phone.
Click to expand...
Click to collapse
The first step (0) will hide Motoblur, the rest of the steps will tweak and tune up the phone, making it run nice and smooth

Hi,
I see for JIT you use the Frozen Eclair package does that work with the JRDNEM_U3_2.34.1_DEBLUR Firmware? And hast it German Language?
mfG

good guy and good guide...

the|gamer said:
Hi,
I see for JIT you use the Frozen Eclair package does that work with the JRDNEM_U3_2.34.1_DEBLUR Firmware? And hast it German Language?
mfG
Click to expand...
Click to collapse
So far, the JIT/Deodex mod is only for the 2.21 firmware, but it works fine with the German/Austrian/Swiss rom. (Ich habe mein Defy aus www.getgoods.de gekauft )
The main difference between the 2.34 Central European rom and the 2.21 roms os that 2.34 has less Motobloat, but since we get rid of that in the guide, I don't think it'll make that much of a difference. As soon as the JIT/Deodex mod is available for 2.34 or 2.51, rest assured that I'll give it a try, though!

tenfar said:
good guy and good guide...
Click to expand...
Click to collapse
Thanks - I wouldn't have been possible without your great work!

Hm. Even though removing some of the apk files will free up (a fraction of the available) space on the Defy itself and while some of them not being there will decrease the amount of running services, I am wondering whether there is a real benefit.
Perhaps I should not make the comparison, but on Windows, there is something that a lot of users do - change the default state of services. However, nothing real is gained, while there is the potential to break something that users may need in the future, without realizing it at the time - being caught up in the thrill of 'tweaking'.
Amongst people who know what they're doing, it's generally accepted that the defaults are sensible nowadays and they should not be 'fixed', unless proven something is broken because of it.
I understand that many users here enjoy tinkering - I myself included, but since I prefer stability/usability to gaining a possible negligible increase in performance, especially in real-world situations compared to benchmarking, I'll stick to mainly default settings unless I can point to something and say 'That package there, it's the source of that feature not performing as well as it would do without it'.
That said, I do welcome and appreciate threads such as this, it gets people to try things out, weed out what is safe and what will break a system.

Hi,
Thanks for you Answer, you what
JIT/Deodex mod is available for 2.34
Click to expand...
Click to collapse
in Combination with Overclock mean?
That means whooopie!
Regards

[Xoom 2][Q] Who overclocked the device? Best way to do it?

Any experience overclocking the Xoom 2 ?
And whats the best way/app to do it?
Not that the device is slow... but I have a lot of 1080p movies with enormous bitrates that I want to watch that bring my xoom2 to its knees.
I will root the device soon... havn't done that yet. Is there something I have to look for when I overclock ? I dont want to destroy it of course...
Is the processor even good for overclocking ?
Help would be much appreciated.

No one has overclocked yet. Someone at one point a while back mentioned insertable kernel modules he made for the processor in the Xyboard/Xoom 2 but I can't find his post anymore...

Hm ok. Sounds a little bit too complicated for my taste... I was hoping for an easy software solution. Only tried 2-3 apps none of them works...
but its really not a big deal... just found out that most of the movies I wanted to watch work fine as long as I dont try to play them over wifi and they are more or less H.264 Baseline Profile... all is fine.
But I bet in the future overclocking will be useful.

Take a look at http://code.google.com/p/opptimizer/
You will need to root your device, use these modules, and setcpu.

sidmoraes said:
Take a look at http://code.google.com/p/opptimizer/
You will need to root your device, use these modules, and setcpu.
Click to expand...
Click to collapse
Giving that a try now, thanks That was most likely the same guy who mentioned it previously.

You do not need to overclock to watch hd movies. I was having issues with hd not being able to play. I just downloaded the best video player app from market with hd performance codex & played my movies great!
Sent from my GT-I9100 using Tapatalk

Elysian893 said:
Giving that a try now, thanks That was most likely the same guy who mentioned it previously.
Click to expand...
Click to collapse
Did you had success with that? Can you post how to overclock the device if it worked for you?
Thanks!

I haven't had any luck. When I change the frequencies (manually, none of his scripting works) it just bogs down completely, even though SetCPU shows it running at 1.5ghz... Can barely do anything but shut it down and restart it...

I have overclocked my device at 1.36 and is stable but i hadn't any luck in higher frequencies
Sent from my XOOM 2 ME using Tapatalk

Could you post a little step by step tutorial about how you did it?
I tried to put these opptimizer files in the system directory but I get an error message all the time... :/
I have root but wasn't able to get it to work. Help would be appreciated.

escapist69 said:
Could you post a little step by step tutorial about how you did it?
I tried to put these opptimizer files in the system directory but I get an error message all the time... :/
I have root but wasn't able to get it to work. Help would be appreciated.
Click to expand...
Click to collapse
i will post a small tutorial in few hours or tommorow when i will have a little spare time ...

I am not responsible if anything happend to your device. Don't blame me for frying your Tablet
Go to http://code.google.com/p/opptimizer/ to get the modules, for more information and support the developer ....
quick download link http://code.google.com/p/opptimizer/downloads/detail?name=mo_simp_1.5_xyboard-signed.zip&can=2&q=
Unzip the modules
Put them in your /sdcard directory (or anywhere you want)
You need to root your device and download terminal emulator from play store
In terminal emulator:
su (grant root access to terminal )
mount -o rw,remount /system
<<<< copy modules>>>>
cp /sdcard/symsearch.ko /system/lib/modules/
cp /sdcard/overclock.ko /system/lib/modules/
<<<<install loadable kernel module>>>>
insmod /system/lib/modules/symsearch.ko
insmod /system/lib/modules/overclock.ko
mount -o ro,remount /system
<<<<Modules are now installed- you only have to do this one time>>>>
To overclock the cpu in terminal (you don't need to do that. You can download shell script and run it)
echo 5 1350000000 1390000 > /proc/overclock/mpu_opps
1350000000 is for frequency and 1390000 for Voltage
Motorola VSEL Values:
63 = 1400000 this the maximum value
62 = 1390000
61 = 1380000
60 = 1370000
59 = 1360000
58 = 1350000
Every device can oveclock and be stable in deferent values . Mine is not stable over 1.36. Try and post your resault
To overclock the gpu in terminal
echo 384000000 > /proc/overclock/gpu_opps
valid values for GPU Frequency 256000000, 307200000, 384000000
Every time you reboot the device Overclock settings are lost ...
Download this shell script and put it in /sdcard/ directory: http://dl.dropbox.com/u/152184/oc.sh
In terminal emulator, you can run the script every time you want to overclock the device:
sh /sdcard/oc.sh
You can edit the script with other values to find the best for your device

Thanks man! I will try this soon and report back how it went... THX a lot!
I will put this in the first post from me so people who are interested can find it quickly.

With the last updated, i think gpu is clocked to 3,84 so you don't seem to be able to overclock gpu with those modules...
Sent from my XOOM 2 ME using Tapatalk

Did anyone try this? I am really interested to see what is the frequency limit you have with your xooms
Sent from my XOOM 2 ME using Tapatalk

I think there is a conflict with vm heap size . If i change dalvik.vm.heapgrowthlimit value and try to overclock it, my tablet reboots !!!

mdcykkk9 said:
I am not responsible if anything happend to your device. Don't blame me for frying your Tablet
Go to http://code.google.com/p/opptimizer/ to get the modules, for more information and support the developer ....
quick download link http://code.google.com/p/opptimizer/downloads/detail?name=mo_simp_1.5_xyboard-signed.zip&can=2&q=
Unzip the modules
Put them in your /sdcard directory (or anywhere you want)
You need to root your device and download terminal emulator from play store
In terminal emulator:
su (grant root access to terminal )
mount -o rw,remount /system
>
cp /sdcard/symsearch.ko /system/lib/modules/
cp /sdcard/overclock.ko /system/lib/modules/
insmod /system/lib/modules/symsearch.ko
insmod /system/lib/modules/overclock.ko
mount -o ro,remount /system
To overclock the cpu in terminal (you don't need to do that. You can download shell script and run it)
echo 5 1350000000 1390000 > /proc/overclock/mpu_opps
1350000000 is for frequency and 1390000 for Voltage
Motorola VSEL Values:
63 = 1400000 this the maximum value
62 = 1390000
61 = 1380000
60 = 1370000
59 = 1360000
58 = 1350000
Every device can oveclock and be stable in deferent values . Mine is not stable over 1.36. Try and post your resault
To overclock the gpu in terminal
echo 384000000 > /proc/overclock/gpu_opps
valid values for GPU Frequency 256000000, 307200000, 384000000
Every time you reboot the device Overclock settings are lost ...
Download this shell script and put it in /sdcard/ directory: http://dl.dropbox.com/u/152184/oc.sh
In terminal emulator, you can run the script every time you want to overclock the device:
sh /sdcard/oc.sh
You can edit the script with other values to find the best for your device
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Hallo!
Thanks for your guide.
I'm following it in a Xoom2 , european Ics , rooted, but i'm stucked in insmod commands.
I get:
insmod: init_module '/system/lib/modules/symsearch.ko' failed (Exec format error)
How can I manage it?
I downloaded the mo_simp_1.5_xyboard-signed.zip file

I haven't tried it on ics yet, i will try it in few hours and i will report back... Are you sure you copy modules correct?

mdcykkk9 said:
I haven't tried it on ics yet, i will try it in few hours and i will report back... Are you sure you copy modules correct?
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Click to collapse
I think yes.
In dmesg i read a ' different magic number error' on the module file.
Let me know your result
Inviato dal mio GT-N7000 con Tapatalk 2

spidertop said:
I think yes.
In dmesg i read a ' different magic number error' on the module file.
Let me know your result
Inviato dal mio GT-N7000 con Tapatalk 2
Click to expand...
Click to collapse
You can't insmod modules on kernel 3+ (ics kernel) i think. i will search around to see if there are is any way to overclock the tablet,