yashsingh1/xdaforums huggingface dataset:
[Galaxy S Plus I9001 Android Development] rickvrolings:
Hey broodplank! Awesome ROM and awesome kernel dude!

Before i installed your rom+kernel, i was running cm10+CastagnalT kernel. And i was really used to the low screen brightness, which saved much battery and was very usefull at night.

I was wondering, could you somehow lower the minimal screen brightness? Even more awesome would be if you could let the max brightness go higher then stock and the minimal brightness lower than stock! This way everyone would be happy :D

Anyway, thanks for still developing software for our phone. I was running broodrom GB when it just was released and now, almost 1.5 years later, you're still here.

Thanks for everything!
[Galaxy S Plus I9001 Android Development] ktulu84:
well, is not so good provided that you have all connection off, try with wifi or with data on and see how much battery drain you have, if you can get 16-20 hours of battery is not bad (you have to recharge everyday, but you can charge only once a day)
[Galaxy S Plus I9001 Android Development] smitharro:
The kernel is awsome! My rom is, as said earlier, flying! Battery drain is not as good as in the original 'broodrom jellybean release 3' kernel but really acceptable. After more than half a working day shift, it is now on 73%. So it should last until the end of the day. Including the evening. I think performance has to come with a little price: battery life....

Edit: now, at the end of my shift I have 55% left.
[Galaxy S Plus I9001 Android Development] tr4usut:
Sorry. My sign is out of date.

I'm using Liquid smooth build 4.
[Galaxy S Plus I9001 Android Development] :
Huh? I was using viber messenger when the phone frozen. I pull off the battery and I restart it: battery drained from 30% to 7%

Inviato dal mio Samsung Galaxy S Plus i9001

ROM: Cyanogenmod 10 (RC 2.5)

Kernel: 3.4.46 (BroodKernel v4.2)

Recovery: ClockWorkMod 6.0.2.8

Baseband: I9001XXKPO
[Galaxy S Plus I9001 Android Development] Shram32:
Can you take a look on it? WiFi analyzer drained my battery. It didn't happened with 3.0 kernel. App wasn't updated recently. WiFi was enabled.

Also I experienced drain with mobile data enabled.
[Galaxy S Plus I9001 Android Development] Mairo:
minimum battery drain with kernel 3.0.78 was 0.4 %/h ( idle, in deep sleep )

and now with kernel 3.4.6 minimum drain is 1,3 %/h ( idle, in deep sleep), so quite big difference.
[Galaxy S Plus I9001 Android Development] magicw:
haha, yes indeed - thanks for that hint. Looking forward to experience its performance
[Galaxy S Plus I9001 Android Development] KingKuno:
Hi,

In the first post I find only v4.1 and only the boot.img but not a flashable.zip file. Where is v4.2 and .zip file ? Thanks :).
[Galaxy S Plus I9001 Android Development] :
http://xdaforums.com/showthread.php?t=1737717&page=69

Just scroll a bit down, there it is. Post #685
[Galaxy S Plus I9001 Android Development] mertee:
different oc table!

I build a flashable zip of broodkernel 4.2 for 4.2.2 (Thx brood for help! :) )with a different oc table for those who have problems to overclock to 1,8GHz with the normal ocuv table. Its stable and a bit different to other tables. In lower frequencies its like exuv and in higher frequencies like stock. But its quite linear as you can see:)

Table:

122,9Mhz 750mV
245,7Mhz 750mV
368,6Mhz 800mV
768,0Mhz 925mV
806,4Mhz 1000mV
1024,0Mhz 1050mV
1113,6Mhz 1075mV
1200,0Mhz 1100mV
1305,6Mhz 1125mV
1401,6Mhz 1150mV
1516,8Mhz 1175mV
1555,2Mhz 1200mV
1612,8Mhz 1225mV
1651,2Mhz 1250mV
1708,8Mhz 1275mV
1766,4Mhz 1300mV
1804,8Mhz 1325mV
1843,2Mhz 1350mV

I don't know whether its good to use so many steps but its smooth and stable on my phone. Maybe a dev can answer!

edit: everything works ;)
[Galaxy S Plus I9001 Android Development] broodplank1337:
Thanks, did you made it for 4.2.2 or 4.1.2? The standard minimal voltage of 900 is kinda high idd..
[Galaxy S Plus I9001 Android Development] mertee:
Its for 4.2.2. Sorry, forget that... ;)
[Galaxy S Plus I9001 Android Development] broodplank1337:
Ok, thank you ^^

How does it run btw?
[Galaxy S Plus I9001 Android Development] mertee:
I noticed no lags, its smooth and the fact of the higher max frequency of 1843 Mhz seems to be no problem. I made 4 or 5 antutu tests in a row without freezes or sth. like that. About battery drain: i dont know whether the table has any

Influence but i think its just like in other 3.4 kernels..

The main advantage to overclock up to 1.8Ghz that i wanted to get with this build succeeded :)
[Galaxy S Plus I9001 Android Development] broodplank1337:
Ok thanks for the feedback ^^. I honestly think the 3.4 branch will never be as energy sufficient as the 3.0 branch, but who know some patch will fix it. Anyways thanks for making the build ^^.

Maybe the new 3.7 branch has the smoothness of 3.4 and the battery life of 3.0 :silly: :fingers-crossed:
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
well let's port 3.7 kernel !! ..just joking....i've also tested your kernel for 1 day and it's smooth, about battery drain it could be better but we need to not forget that 3.4.x kernel for s+ it's at beginning at developing.. Thank you Brood !!!
[Galaxy S Plus I9001 Android Development] broodplank1337:
Lol no :P ill wait for CAF sources XD. making the 3.7 kernel ariesve compatible is probably a horrible job :D

And idd yes the 3.4.x branch is idd in kinda early development (although everything works :)).

Or I just implement this uber awesome snippet

if (battery_level < 100) {
BATTERY_VOLTAGE_LEVEL = 4200;
battery_level = 100;
}else{
GatherElectronsFromTheAirAndStoreInBattery();
}

:silly::silly::silly::silly:

If it just was that easy...
[Galaxy S Plus I9001 Android Development] psaikia:
sorry for OT

Great liked the code .

appreciate if there is a code for making single core to eight core

and 2 gigs of Ram. Lol
[Galaxy S Plus I9001 Android Development] broodplank1337:
haha :silly:

of course we have shell script for that

if [ -e /sys/devices/system/cpu7 ]; then
echo "8 Cores are already present"
else
cp /sys/devices/system/cpu0 /sys/devices/system/cpu1
cp /sys/devices/system/cpu0 /sys/devices/system/cpu2
cp /sys/devices/system/cpu0 /sys/devices/system/cpu3
cp /sys/devices/system/cpu0 /sys/devices/system/cpu4
cp /sys/devices/system/cpu0 /sys/devices/system/cpu5
cp /sys/devices/system/cpu0 /sys/devices/system/cpu6
cp /sys/devices/system/cpu0 /sys/devices/system/cpu7
fi;

and for the ram it's even easier, java tho

if (DEVICE_MEM <> 2097152) {
DEVICE_MEM = 2097152;
} else {
die();
}

Anyways, ONTOPIC:

broodKernel v4.3 is ready for launch :)

CHANGES:

- Added frandom (by Christopher83)

- Added support for voltage changing (VDD)

- Added Performance Ram Tweak (by biago7xD)

- Merged Cyanogen vsync fix

- Optimized SLUB performance

- Asynchronous I/O latency to a SSD (internal sd) greatly increased, 34% gain (Creds: kleikamp)

Building the rom was never easier!

to build from source to boot.img for jb4.1.x and jb4.2.x:

./xconfig && ./build_clean && ./build_bootimg

Commits: https://github.com/broodplank/samsung-kernel-msm7x30/commits/cm-10.1

edit: holy ****, look at this great RAM performance :D

(app: A1 SD Bench)

almost 1gb/s read ^^

(with 3.0.x branch its max 750mb)
[Galaxy S Plus I9001 Android Development] smitharro:
Just installed this kernel in Broodrom JellyBean 4 nightly. Let's see. Sofar so good. Still -very - fast! Thanks brood!

Send from my GT-I9001 using Broodrom JellyBean
[Galaxy S Plus I9001 Android Development] mikapharm:
it didnt work with me it hangs at boot

is it pre overclocked to 1804 mhz ? because my phane always hang at this frequency whatever the voltage i apply

the maximum frequency i can have is 1708 at stock voltage so please can you make your kernel with stock frequency so everyone can overclock to his preferred frequency

thanks
[Galaxy S Plus I9001 Android Development] Dblaster:
Awesome work Brood!!!

Here are flashable zips for v4.3, in case anyone needs them.

And thanks to [MENTION=5126789]zxc123coke[/MENTION], because I've used the updater-script from his zip.
[Galaxy S Plus I9001 Android Development] mertee:
hey brood, thx for the new release. i tested the new build_bootimg and and seems that it doesn't work correctly for 4.2.2 for me. the boot.img for 4.1.2 works but the boot.img for 4.2.2 has just 3,4 mb instead of 3,8 like usual. it seems that the ramdisk isn't inside. really don't know why, maybe my fault..

cp: reguläre Datei »build/4.2.x/boot.img-ramdisk/lib/modules/dhd.ko“ kann nicht angelegt werden: Datei oder Verzeichnis nicht gefunden
cp: reguläre Datei »build/4.2.x/boot.img-ramdisk/lib/modules/cifs.ko“ kann nicht angelegt werden: Datei oder Verzeichnis nicht gefunden

EDIT: Solution for me: I had to create the lib/modules directory in boot.img-ramdisk directory in 4.2.x manually.
[Galaxy S Plus I9001 Android Development] Giorgio555:
The kernel 4.2.2 is wrong :/ because is bytes :(

Inviato dal mio GT-I9001
[Galaxy S Plus I9001 Android Development] Dblaster:
Sorry, i didn't get your point.

Is something wrong with the zip??

or is it something else?
[Galaxy S Plus I9001 Android Development] Giorgio555:
Now it work :)

Inviato dal mio GT-I9001
[Galaxy S Plus I9001 Android Development] Bitman64:
new kernel runnin since release.... smoth, fast and stable. Statements concerning batterydrain not possible atm.

But with each release GPSfix is getting worse :(

is it possible that less battery drain means worse GPSfix?

Gr.

B.

Edit:

82 secs ...... :(
[Galaxy S Plus I9001 Android Development] TwinHeadedEagle:
Holy ****, thanks :D
[Galaxy S Plus I9001 Android Development] jpacho89:
it's only me or it jumps some frequencies? for me 1200 1000 and 800mhz are not working.

Anyway thanks brood for adding voltage change support!

The kernel is amazing, great work all developers! Thank you!

edit: working fine now, my fault, I forgot fixing permissions ;)
[Galaxy S Plus I9001 Android Development] TwinHeadedEagle:
Drain is still huge, overnight i lost 20% of battery in deepsleep...
[Galaxy S Plus I9001 Android Development] broodplank1337:
Yes, I noticed this as well :rolleyes I think we will have to wait until the right patch comes. Anyways, jpacho89 told me that running the ExUV kernel with the governor conservative seems to be pretty good for the battery.
[Galaxy S Plus I9001 Android Development] smitharro:
Everything is fine, except wifi tether. I tried it from the official way and an app wifi tether root. My device isn't sending a signal. Don't know if it's a kernel issue or a rom issue. The app said: 'tethering started with errors'. It seems to be running, but it isn't...

Send from my GT-I9001 using Broodrom JellyBean
[Galaxy S Plus I9001 Android Development] ktulu84:
wifi tethering doesn't work in roms for 3.0 kernel with 3.4 kernel and vice versa

Inviato dal mio GT-P3110 con Tapatalk 2
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
sorry for this question but i read that v4.3 is not booting or something like that because something it's missing from boot.img ( i'm reffering to 4.2.2 version )..... 4.2.2 zip provided by Dblaster are working correctly i mean that includes the fixed boot.img ? Thanks !!
[Galaxy S Plus I9001 Android Development] smitharro:
I'm using Broodrom JellyBean release 4 nightly. It comes with version 3.4...

Send from my GT-I9001 using Broodrom JellyBean
[Galaxy S Plus I9001 Android Development] ktulu84:
Yes, but you have to see if brood removed a flag that is not in the kernel anymore in the rom compilation, you can try a 3.0 kernel and see if it works, if not there is a problem

Inviato dal mio GT-P3110 con Topatalk 2
[Galaxy S Plus I9001 Android Development] broodplank1337:
Yes there was some non booting image out there idd, but it got fixed, also the upcoming boot.img files will be packed correctly ;)

I think he means CM10.1 instead of 3.4 rom xD

What flag :o
[Galaxy S Plus I9001 Android Development] ktulu84:
I'm not a dev so i don't know which flag, but krislibaeer knows it (in phenomkernel thread he just replied to a guy that has problem with 3.0 kernel on cyano 10.1 by david, and i experienced the same issue with erik rom (3.0) and 3.4 test kernel i'm using (it was working with 3.0 kernels). Now with cyano 10.1 it works well

Inviato dal mio GT-P3110 con Topatalk 2
[Galaxy S Plus I9001 Android Development] smitharro:
No, I don't mean CM10.1. I mean Broodrom JellyBean release 4 nightly. I know the difference. But I tried it with kernel 3.078. Doesn't work either. So it must be rom related, not kernel related. That's the risk I take by using a nightly!

Send from my GT-I9001 using Broodrom JellyBean
[Galaxy S Plus I9001 Android Development] ktulu84:
Well good to know (not that is good that is a rom problem, but it is good to know where to search :D)

Inviato dal mio GT-P3110 con Topatalk 2
[Galaxy S Plus I9001 Android Development] a4apple:
I cant flash this kernel. :( it just stuck on the boot animation. :( is it because of the twrp 2.4.4? :(
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
which version ??? for 4.1.2 or for 4.2.2 ???? i don't think because of twrp .. have you made wipe cache, wipe dalvik and fix permissions after flash ?
[Galaxy S Plus I9001 Android Development] DreamerTKM:
BroodRom release 4??? link please???
[Galaxy S Plus I9001 Android Development] Dblaster:
It's a nightly atm.

Here's the link: http://xdaforums.com/showpost.php?p=41645864&postcount=848

---------- Post added at 04:33 PM ---------- Previous post was at 04:31 PM ----------

If you're talking about the 4.2.2 version, download the file again and flash it.
[Galaxy S Plus I9001 Android Development] edisile:
Little question: i'm the only one that has problems with WiFi tethering?

Grammar™ is freeware; this means you can use it without paying anything. Though, Grammar™ is not open-source; this means you can't edit source code.
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
look at this :d ... both were made with smartassv2 and row but that with 6000+ was made at 1824 MHz... no problems so far ... THANKS BROOD!!!!!
[Galaxy S Plus I9001 Android Development] a4apple:
I did wipe cache, dalvik-cache and fix permissions after flashing. Yeah, i'm talking 4.2.2 version. :) okay! will try it now. :) thanks!
[Galaxy S Plus I9001 Android Development] :
V4.3 for jb 4.1 is awesome.. no lags so far and better battery drain than kernel 3.0 for me!

Inviato dal mio Samsung Galaxy S Plus i9001

ROM: Cyanogenmod 10 (RC 2.5)

Kernel: 3.4.46 (BroodKernel v4.3)

Recovery: ClockWorkMod 6.0.2.8

Baseband: I9001XXKPO
[Galaxy S Plus I9001 Android Development] broodplank1337:
Thanks :D, and wow you must have a new battery lol :D wish i would have that
[Galaxy S Plus I9001 Android Development] edisile:
Ok, i can confirm :( On cm10 beta 2 by Xistance WiFi tethering doesn't work with the last 4.3 version.

Grammar™ is freeware; this means you can use it without paying anything. Though, Grammar™ is not open-source; this means you can't edit source code.
[Galaxy S Plus I9001 Android Development] mikapharm:
t didnt work with me it hangs at boot

is it pre overclocked to 1804 mhz ? because my phane always hang at this frequency whatever the voltage i apply

the maximum frequency i can have is 1708 at stock voltage so please can you make your kernel with stock frequency so everyone can overclock to his preferred frequency

thanks
[Galaxy S Plus I9001 Android Development] :
To be honest I have a "new" phone! xD I bought it on September 12 and I have to say that battery drain is better with your v4.3 kernel than CIT v11.0! (This is about my phone, idk what's the battery drain for others :P)

Inviato dal mio Samsung Galaxy S Plus i9001

ROM: Cyanogenmod 10 (RC 2.5)

Kernel: 3.0.78 (K^Kernel v1.9 by Christopher83)

Recovery: ClockWorkMod 6.0.2.8

Baseband: I9001XXKPO
[Galaxy S Plus I9001 Android Development] oscarmalo:
how install 4.3 .img? :S ZIP please?

thx
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
look at page 75 and you'll find ;)
[Galaxy S Plus I9001 Android Development] TwinHeadedEagle:
Rename kernel to boot.img

Then use Terminal Emulator

su
dd if=/sdcard/boot.img of=/dev/block/mmcblk0p8
reboot
[Galaxy S Plus I9001 Android Development] smitharro:
Look in the thread for release 3 or at broodplank.net

Send from my GT-I9001 using Broodrom JellyBean
[Galaxy S Plus I9001 Android Development] XeLLaR*:
Hey brood!

Can you tell me more about the Cyanogen Vsync fix?

Thanks in advance

Gesendet von meinem GT-I9001 mit Tapatalk 2
[Galaxy S Plus I9001 Android Development] broodplank1337:
Well I don't exactly know but this is what the author committed:

* If vsync times out, we need to call complete_all otherwise the wait

count goes to zero and we are stuck forever.

* Should hopefully fix the hangs and crashes.

I just merged it, since its a cyanogen commit it must be good I guess. else they wouldn't commit it

https://github.com/broodplank/samsung-kernel-msm7x30/commit/e4a18f48797e658df85ac52708c76dc7c827900e
[Galaxy S Plus I9001 Android Development] DreamerTKM:
The screenstatescaling permissions must set to rw-rw-rw- in order to work:confused:
[Galaxy S Plus I9001 Android Development] broodplank1337:
No because it cannot be executed then since it doesnt have the execute right
[Galaxy S Plus I9001 Android Development] 32bit:
You've asked me it already. And I've already answered You: "Yes". :D

Would You please to check my 2012.07.02 report for details (10 posts upper).
[Galaxy S Plus I9001 Android Development] EB20XY:
Will you upload a new kernel today ?
[Galaxy S Plus I9001 Android Development] cezaralboiu:
Does it work on a xxkqe stock rom?
[Galaxy S Plus I9001 Android Development] kunalwanvari:
yup
[Galaxy S Plus I9001 Android Development] cezaralboiu:
Are you sure? my rom does not have root acces or deodex.
[Galaxy S Plus I9001 Android Development] broodplank1337:
You don't need deodex, but you need to root your phone
[Galaxy S Plus I9001 Android Development] cezaralboiu:
sorry for asking again but i don't want to damange again my phone..i've got an stock official XXKQE rom and now i have got root acces but no cm9 recovery or feamod.do i need anything else more than root acces to ionstall this kernel?:D
[Galaxy S Plus I9001 Android Development] kunalwanvari:
it wont be required .. though its a mre stable recovery method
[Galaxy S Plus I9001 Android Development] iCloud:
Read the instructions. You can also use twrp recovery. Install cwm or twrp recovery and install this kernel with either the recovery.
[Galaxy S Plus I9001 Android Development] masteronyx:
I got a question, do i need to deleted all scripts in the init.d folder? Because Brood said in a few post above that the installer is not deleting scripts?

i got the following scipts in the init.d folder:

00mount

01screenstatescaling

02supercharger

03zipalign

04vacuum

05tweaks

Installed the kernel on BroodROM Business Edition Final V1.
[Galaxy S Plus I9001 Android Development] broodplank1337:
The installer should delete the script, didn't it? And yes you need to remove the script if they are not uninstalled
[Galaxy S Plus I9001 Android Development] masteronyx:
Nope, do in need to delete them all and the folder?

Verstuurd van mijn GT-I9001 met Tapatalk
[Galaxy S Plus I9001 Android Development] broodplank1337:
just remove the files inside, then you can place 01screenstatescaling (from the broodKernel addons) inside there if you want. I use it and I like it
[Galaxy S Plus I9001 Android Development] shubham412302:
can you add oc to the kernel
[Galaxy S Plus I9001 Android Development] broodplank1337:
No at the moment I cannot, since I only edited the ram disk, Also I don't have the source of the KQE kernel, so that makes it harder, I think in the future it will have oc when I've figured out some things ;P

btw, I'm making several bootlogos (so also separate zips will be uploaded), this one I call Running bootlogo:

I will also add the one with the android pissing on the apple:

and one that is plain:
[Galaxy S Plus I9001 Android Development] broodplank1337:
Think there will be more broodKernels in the future with this tool :O
[Galaxy S Plus I9001 Android Development] EternalFame:
Is there a download available?
[Galaxy S Plus I9001 Android Development] broodplank1337:
No :p not yet, I was just designing the GUI, I will make it function later :P
[Galaxy S Plus I9001 Android Development] XeLLaR*:
Thank you, this could become usefull! :good:
[Galaxy S Plus I9001 Android Development] broodplank1337:
New version released v4.4!

Changes:

- Added lulzactivew and conservativeX (less agressive conservative) governors

- Merged Christopher83 patches (fix display regulator fix)

- Merged CastagnaIT patches (lcd regulator fixes & fix)

- Lowered swapiness to 45

Not much this time but an update is an update.

Attached zips for both versions this time :silly:
[Galaxy S Plus I9001 Android Development] TwinHeadedEagle:
Thank you, that's what I've needed, even if stock kernel works like a charm :)

Will test how battery behaves...
[Galaxy S Plus I9001 Android Development] ahmed234:
Why after reboot cpu frequency always stuck on highest freq..?

Im using lulzactive governor
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
so far so good :D... Thanks !!!!!!!!!!!
[Galaxy S Plus I9001 Android Development] muhammadnajmi96:
Try to fix permission and change governor
[Galaxy S Plus I9001 Android Development] Dblaster:
Thanks Brood!!

I was testing the battery on v4.3, but i guess i should skip that and use v4.4.

And it's good that you zipped the kernels this time :D.
[Galaxy S Plus I9001 Android Development] broodplank1337:
Yes phantomkeys has been included from the first version.

New build btw because of new linux kernel update ;)

v4.4.5:

Changes:

- Update from 3.4.46 to 3.4.47

- Added Brazilianwax governor

Tiny update :cowboy:
[Galaxy S Plus I9001 Android Development] TwinHeadedEagle:
Hehe, you're fast :)
[Galaxy S Plus I9001 Android Development] metalrules321:
Looking and working flawlessly brood ! I'll try it out for some more days and then report back :victory:
[Galaxy S Plus I9001 Android Development] broodplank1337:
Thank you, ok ^^ ill wait for it, anyways, pretty large chance there already is a new version then, as I update it all the time :p
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
First of all your kernels based on 3.4.x are amazing.... now i'm running latest kernel v4.4.5 and i don't have any kind of problem, with v4.4 and with v4.3 the same: no problem !!!!...

I know that it is the first release of InstaVOLT app and also it's working flawlessly but in the future could you implement an option that let you to modify for each default frequency the voltage( for example: for 245 MHz to set voltage at 750mV and at 1401 MHz to set voltage at 1050mV and so on) :D ?
[Galaxy S Plus I9001 Android Development] silverTwins:
umm just 48.6 kb? for the 4.2.2 version?

edit - saw a wrong version.. the kernel is awesome brood :)
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
no...download it again.. it needs to have 3.76 mb
[Galaxy S Plus I9001 Android Development] silverTwins:
thanks laurentyu.. it was my mistake.. saw it wrong..
[Galaxy S Plus I9001 Android Development] broodplank1337:
Thank you :) They run very smooth idd, my only wish is a boost in battery life, but until its there is a pretty good kernel for daily usage :D

And the app, yes I wanted to do that at first, but I then I found the way to increase/decrease all voltages which is MUCH easier :P

Anyways, I might do it later, but it will need good testing, some wrong values and your phone shuts down instantly.

For now I enjoy how easy it was to make this app and improve it by adding auto UV on boot and multiple devices support.

Lol just wanted to comment but you've edited your post as I see :)

Enjoy it ;p
[Galaxy S Plus I9001 Android Development] Laurentyu1995:
i know that it's much easier to modify all voltages than one to one. But i think if you do this you can also make to modify voltage for each default frequency ( but i think it may cause incompatibility with another phones ).. and yes , your right lower voltages cause shut down and i think higher voltages can f*** the cpu... I wish to can make apps as easy as you do