Questions about custom ROMs, rooting, and operating systems. - Android Q&A, Help & Troubleshooting

Hello all. I'm about to bombard you with a few noob questions that I'm really hoping someone could help me out with.
I'm currently using a Galaxy S2, but after reading a bit about custom ROMs and the ability to possibly increase battery life among other features, I have decided to delve a bit deeper. I do have a few questions though.
- What is the difference between rooting and using a custom ROM?
- Do I need a specific Kernel version or build number in order to use a custom ROM on my Galaxy s2 or does none of that matter when installing a new ROM?
- It is to my understanding that custom ROMs cannot use Kies. So, in the event that Android 4.0 comes out, will I have any problems being able to get it onto my phone with a custom ROM? Will it cause any interferences between the ROM and the new operating system?
I'm very interested in trying this out, however with the firmware I am currently running, there is no replacement to be found. In the event that I want to revert back to factory, it probably will not be possible to find this specific firmware that I am using (already searched).
Thanks a ton in advance for the help

Rooting gives you access to aspects and features on the phone that you otherwise couldn't get to. Installing a custom ROM wipes out the software on your phone and replaces it with software someone other than the OEMs developed.
You need to unlock your bootloader in order to install a custom ROM, and the process for this differs from phone to phone. Other than the different steps, it doesn't really matter what your phone has to start out with.
I don't know anything about Kies.
Honestly, I would highly recommend rooting your phone... just make sure you maek a backup as soon as you get root access (but before you install a custom ROM) and you're good to go!

roboedar said:
Hello all. I'm about to bombard you with a few noob questions that I'm really hoping someone could help me out with.
I'm currently using a Galaxy S2, but after reading a bit about custom ROMs and the ability to possibly increase battery life among other features, I have decided to delve a bit deeper. I do have a few questions though.
- What is the difference between rooting and using a custom ROM?
- Do I need a specific Kernel version or build number in order to use a custom ROM on my Galaxy s2 or does none of that matter when installing a new ROM?
- It is to my understanding that custom ROMs cannot use Kies. So, in the event that Android 4.0 comes out, will I have any problems being able to get it onto my phone with a custom ROM? Will it cause any interferences between the ROM and the new operating system?
I'm very interested in trying this out, however with the firmware I am currently running, there is no replacement to be found. In the event that I want to revert back to factory, it probably will not be possible to find this specific firmware that I am using (already searched).
Thanks a ton in advance for the help
Click to expand...
Click to collapse
There's probably a for for the GS2, where you can find details for your phone. Some methods of rooting on some devices do require a specific version of firmware. Give or take carrier issues I heard the GS2's were getting ICS in an update...
The main reasons to root your phone are to do things you can't do without root. For example using a VNC server you typically requires root, but it allows connecting to your phone via VNC. Custom ROMs are usually rooted; installing a custom ROM doesn't always need root (e.g. nvflash) but it helps eventually.
No idea what Kies is and I'm to cold to Google it. If it's in the market, check it in a browser to see what versions they support.
Sent from my Transformer TF101 using Tapatalk

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[Q] New to S2/Android... coming from WebOS

Hi guys,
I plan to buy on June 14th the Galaxy S2 on Bell Canada network, it will replace my Pre2.
I was wondering if you can recommend me a specific ROM that will get rid of TouchWiz and allow me to run Gingerbread stock. I'm not familiar at all with Android, as I never use it before. That is the main reason why I rather ask the question here instead of searching, as I would not know what to search for.
A little about myself: I'm a Linux head (Redhat advanced + Ubuntu).
Thank you for your your help.
If you realy want to delete touch wiz, you'll have to root your phone otherwise you can't get rid of touch wiz, however you can run a different launcher and having touch wiz on your phone.
Hi Viletung. In WebOS, it takes me about 30 seconds to root the phone.
Yet that retains all the phone settings unchanged, while allowing me to install packages, manipulate data, etc. Is it the same thing with SGS2?
I guess my question is: is it recommended to root the phone? I'm curious if most of Android users root their phone. I know I rooted my Palm Pre/Pre2 phones 5min after I got them. I read on the Internet that certain ROM's are built on stock Gingerbread (without TouchWiz), allowing the phone to save on battery and run much smoother with less used resources. Obviously, if you install a new ROM it will void the warranty.
I'm at a point where I'm learning the basics, so any advice is appreciated.
Hello!
I've installed Lite'ning rom 1.5, which has root access. And to flash it takes about one minute!
When I got this phone, I knew it was possible to root my phone, but I was scared that I would screw something up and break the device.
Now, it's about one month after I got this phone and I must say after rooting the device, deleting some standard Samsung **** (Social Hubs etc..), my SGSII isn't draining battery as it used to do before I deleted some stuff. (Including TouchWiz)
But I have also a JIG, to reset the custom kernel counter, just incase I need my warranty back.
So my final conclusion is; I can't life without root! I like to edit the system icons (battery-, wifi icon and much more).
If you have any questions, I'll try to help you
Rooting, yes do it. It's easy, does no harm, and opens up neat options.
Just get Villainrom which is updated to version 2.0. It's built on android 2.3.4, fixing the 2.3.3 battery drain bug (which occured on all phones running 2.3.3).
If you want your stock gingerbread experience, there is a rom out there which tries to replicate this, but I recommend using a 'better' rom with a custom launcher mimicking Gingerbread. Since there's not a lot of difference than just a different launcher (home-menu).
Most dont root but most are not on XDA and dont know anything bar stock . I would guess most XDA users root .
I'm at a point where I'm learning the basics, so any advice is appreciated.
To a certain extent its been a learning curve for the devs as SGS 2 is different to SGS1 .Expect even more development as the days go by .
jje
Thanks a lot guys for the info.
prodygee said:
Rooting, yes do it. It's easy, does no harm, and opens up neat options.
Just get Villainrom which is updated to version 2.0. It's built on android 2.3.4, fixing the 2.3.3 battery drain bug (which occured on all phones running 2.3.3).
If you want your stock gingerbread experience, there is a rom out there which tries to replicate this, but I recommend using a 'better' rom with a custom launcher mimicking Gingerbread. Since there's not a lot of difference than just a different launcher (home-menu).
Click to expand...
Click to collapse
Thanks for the info. I want to have the latest version of Android, I don't really care about Gingerbread. How do updates work on Android (i.e. updating to Ice Cream Sandwich eventually)? On WebOS, updates are done automatically from your carrier or Palm/HP (if you had an unlocked phone like myself). Even if I rooted my phone, I would be able to update the phone firmware with a simple download and retain the rooted aspect of the phone.
About rooting, what did you used? I'm looking at Odin and SuperOneClick... is there something better/safer? One more time, thank you.
Official updates via Kies over PC only .
Rooting is usually lost on update .
Rooting via Chainfire
http://forum.xda-developers.com/showthread.php?t=1103399
jje
yqed said:
I was wondering if you can recommend me a specific ROM that will get rid of TouchWiz and allow me to run Gingerbread stock.
Click to expand...
Click to collapse
Why don't you use it for a least a few seconds before ditching it, there's no aosp gingerbread anyway so you're stuck with it until cm7 comes along.
I want to root the phone and replace the ROM mainly because I heard that TouchWiz is running on top of current OS. I could disable TouchWiz, indeed. The issue is: I do not know how upgrades are performed into phone. From the above posts, I have to do it myself is not an automated download/install like WebOS does it.
So, if a new Android version is released, I have to download it myself? For example, my phone comes with 2.3.3 installed but 2.3.4 is released already. Will my phone ask me to download the latest version automatically upon release? I presume not, I have to download and install it myself. Using logic, that is done by either installing a ROM or getting the upgrade from mobile provider.
Correct me if I'm wrong.
yqed said:
So, if a new Android version is released, I have to download it myself? For example, my phone comes with 2.3.3 installed but 2.3.4 is released already. Will my phone ask me to download the latest version automatically upon release? I presume not, I have to download and install it myself. Using logic, that is done by either installing a ROM or getting the upgrade from mobile provider.
Correct me if I'm wrong.
Click to expand...
Click to collapse
That's correct, and is one of the main reasons people root their Androids so that when a new version comes out we can download it straight away and don't have to wait for the carrier to officially release it, which usually takes a lot longer than it does for the devs here to put something together. E.g. there are a few ROMs already in the dev forum based on 2.3.4, but there is not yet any official update.
Thanks guys much appreciated. I will probably have more questions, once I have the phone on hand.
yqed said:
I want to root the phone and replace the ROM mainly because I heard that TouchWiz is running on top of current OS. I could disable TouchWiz, indeed. The issue is: I do not know how upgrades are performed into phone. From the above posts, I have to do it myself is not an automated download/install like WebOS does it.
So, if a new Android version is released, I have to download it myself? For example, my phone comes with 2.3.3 installed but 2.3.4 is released already. Will my phone ask me to download the latest version automatically upon release? I presume not, I have to download and install it myself. Using logic, that is done by either installing a ROM or getting the upgrade from mobile provider.
Correct me if I'm wrong.
Click to expand...
Click to collapse
Android phones get new updates over the air when available, just like web os. Only Samsung does their own thing which is different on the sgs2 than on normal android devices. .
Which is, providing updates through an unnecessary software suite called KIES. You won't see an update available message on your phone.
yqed said:
Hi guys,
I plan to buy on June 14th the Galaxy S2 on Bell Canada network, it will replace my Pre2.
I was wondering if you can recommend me a specific ROM that will get rid of TouchWiz and allow me to run Gingerbread stock. I'm not familiar at all with Android, as I never use it before. That is the main reason why I rather ask the question here instead of searching, as I would not know what to search for.
A little about myself: I'm a Linux head (Redhat advanced + Ubuntu).
Thank you for your your help.
Click to expand...
Click to collapse
Just install a launcher fromthe Android Store. There's plenty of good ones like LauncherPro, GX Launcher, 7 launcher. Their all relatively good and fully functional.
OK, I got the phone (16GB model) today from FutureShop and played with it a bit. It is a great phone indeed...
Phone Info (might be useful for devs)
Network: Bell Canada
Model: GT-I9100M
Android Version: 2.3.3
Baseband Version: I9100MUGKG2
Kernel Version: 2.6.35.7-I9100MUGKG2-CL371789 [email protected] #2
Build Number: GINGERBREAD.UGKG2
Now, on with the usual:
Bell bundled the phone with several crap apps like Self Serve, TeleNav GPS (how stupid is that on an Android), Remote PVR, etc.
I will follow your advice and use the phone for now as is, without any fancy stuff done to it (like a new ROM). I would like to get rid of the Bell proprietary apps (physical delete), let me know if is possible. I guess if the phone is rooted it should be easy, the trick is to know how to delete the apps from the phone.
Another question: How do I install the Samsung drivers, without installing the blotted KIES?
I looked for a clean package with SGS2 drivers only but I could not find anything... All I want is to go to Device Manager and point a directory.
I must admit that Android is a totally new experience, coming from WebOS. I'm pretty much lost, heh. I know I sound like a noob, so please forgive me if I ask some simple questions that I can get the answer with a search or just by reading the phone instructions (haven't had the time to read the documentation).

Getting Confused more and more..Need Help

Hi Guys as my title Says..
i need Help very Badly.
First of all MODS and USERS i'm sorry i didn't knew where to post this thread so if its in in-appropriate section please move it to correct section. THanks
OK my problem is this.
i recently (less than a week ago ) bought a Samsung Galaxy S2 its by Bell Canada and its i9100M. i bought it online since my service provider is Rogers.
i guess this phone is already rooted to unlock it and i can see CWM and SU icon there.
Well i'm a Hardcore Blackberry Fan and have been using Blackberries from last 6 years. I loved the new samsung because of it looks and its screen.
I Had Lot of Problem with it like setting up my yahoo as push email, setting the Ringtone Profile, setting up the Custom Ringtones for Text Messages..
Having wrong time stamps on Recieved TEXT Message.. well i fixed all those by installing apps from market and forwarding my yahoo to my gmail...
i Hated doing all that but infront of the beauty of this phone i had to compromise but today it took 3 hours to find my gps location and day by day im using it i'm hating it .....
SO OK I DID MY RESEARCH AND FOUND OUT ALOT... the more i'm researching the more i'm getting confused...
first of all what is the difference between custom ROM and KERNEL.
i know custom rom could be like operating system but customized by unofficial person.
what the h is KERNEL..
to install rom's or kernel do i really have to root.
To unlock do i have to root or is there a paying method.
also i want to know if i'll go back to stock rom can i still unlock it.and recieve all the updates from samsung or google specially when ICS will be launched.
after unlocking and installing custom root. can i unroot it
and lastly which is best custom kernel and which is the best rom availble.
since been a blackberry user i have very basic needs. i don't play any games or download much apps and if an app is paid..i'll pay for it.. i don't want to jailbreak anything .
all i need is better battery life, gps and network coverage.
Thanks for taking time to read and reply.
Hi there.
I'll try and get through your questions as simply as possible,
Imagine your phone is like a car
A kernel is like the engine of a car - it's the low level machinery that keeps it going.
The Rom is like the body of the car around the engine. Roms can be official (or Stock Roms), or they can be customised by other people.
So, when you install a stock rom - you're installing the kernel, but you're also installing the radio (called a modem or baseband) and the registration (or the CSC which is location specific information) as well as the unique 'body' of the car for that rom - tweaks, default software, etc.
You don't have to have rooted your phone to install a Rom. When you update your phone via Kies, you are, literally, installing an stock rom. You can even install stock roms from elsewhere without rooting your phone. Because stock roms are released in different regions at different times, lots of people update their phones to the latest official roms via this method - no root required.
However, to install a custom, unofficial rom, you will need to root your phone as they will require access to the 'root level directory' of your phone's file system - which is what root really means.
You can find everything you need to know about that, how to root and also lots of stock roms you can install without rooting here:
Some shops will root you phone for you if you want to go down that path and don't want to risk it. But it's easier than you think and the galaxy s2 is very hard to break. There's lots of help available on XDA - just remember to search before you ask so you don't ask a common question the millionth time.
If you have installed a custom rom you can easily re-install a stock rom over it that will still work with Kies and thus be updateable when ICS turns up.
There is no 'best' Rom or kernel. Some Roms go 'as is' and some are customisable to the nth degree if you like fiddling with your phone non-stop. I personally use CheckRom because I like the kitchen app that lets you swap kernels, modems and mods with ease - but check out the Original Android Development threads and see which other roms you like the sound of.
Depending on what you are currently running, a new rom - even a stock one if you're running a very old one - could easily help with battery and range issues. For GPS - try installing FasterFix from the market and see if reassigning your GPS fix to a closer location helps.
Best of luck - it's a great phone once you open up its possibilities
Thanks a lot for the reply
well your reply did help me a lot...
my phone is been already rooted by someone else already from the person i bought it....
as for searching i did a lot.. and its been confusing me more and more ..well thanks for your answer
also as u said S2 is hard to break..i guess u mean is that the JIG thing on EBAY
and as for flashing the stuff i've played with other stuff just not android thing ive replaced the os on BB and jailbreaked iphones and installed macintosh on HP PC and also worked on most of the languages 10 years ago... and i believe nothing is impossible so going to someone else is never an option for me
just want to know as much as stuff i can before going further
well i have few more questions
how can i find which rom or kernel is already installed...
i mean is it possible to tell if its stock or its customized and its customized by which group.
and one last thing.. u know the words u used modem and baseband...
i read about it before...
but my question is ...
IS THE BASEBAND ANYTHING LIKE IPHONE BASEBAND???
u know in iPhones when baseband is updated u r screwed sometimes its hard to jailbreak and definately hard to unlock and reverting changes to baseband....
is it the samething in Galaxy S2 as well...
Thanks a lot for replying...i really appreciate all the time you took to reply.
Thanks once again.
Yeah baseband is the code that handles the phone part of your smartphone. Talking to your wireless provider, 3G, texts all these things are done by baseband.
Flashing a different baseband won't screw your root, and you'd still be rooted. Samsung doesn't make it hard to root as Apple does to jailbreaking. Even if something goes wrong with a new version, you can always revert back to old one using Odin(Samsung ROM flashing tool) and you are good to go.
Thanks a lot... about that quick reply...
i'm gonna collect more information and hopefully i'll be flashing it on weekend...
but how can i find which rom or kernel is already installed...
i mean is it possible to tell if its stock or its customized and its customized by which group
Everything you need to know can be found here. Most of it, anyway.
Backup your device with cwm when rooted ... So you can always restore to previous state. ;-)
Good luck there. But reading is a must.
SGS II - XDA
blackberryfan said:
thanks a lot... About that quick reply...
I'm gonna collect more information and hopefully i'll be flashing it on weekend...
But how can i find which rom or kernel is already installed...
In your dialer type *#1234#
info will apear. Now read chainfire's tutorial how to root your device ....
I mean is it possible to tell if its stock or its customized and its customized by which group
Click to expand...
Click to collapse
Setting went wrong when quoting
sgs ii - xda
also you can go settings - about phone - then look at the bottom fields to see kernel, baseband and build. Quote those and we should be able to tell what you have.
Sent from my GT-I9100 using XDA App

[Discussion] Rooting (insecure kernel) and building JB ROM for Player 3.6

Basically what I'm trying to do is make an insecure/rooted kernel and a custom ICS ROM for the Samsung Galaxy Player 3.6. I don't have enough knowledge and experience to do this completely on my own, so if anyone's willing to help that would be great.
For rooting I know that because it's 2.3.6 there's no universal way to root. I've heard that the only way to root 2.3.6 is by flashing an insecure, or rooted kernel, while I'm savvy enough to flash the kernel and/or provide the files, I have no idea how to build one.
For a custom ICS ROM it's the same, I'm savvy enough to flash a ROM and provide files, but not even close to knowing how to build one. I'd like the ROM based off of CM10, if possible.
I'm willing to test out anything remotely stable that doesn't have a large chance of bricking my device. I know the amount of people who are interested in this is small, but we will all be very grateful.
I thought most custom roms automatically allowed the user root access. After all, managing users and permissions is a function of the kernel, which gets replaced when you flash a new rom, doesn't it?
Of course, there is a very good chance I'm mistaken or just wrong. Either way, this is a great chance to learn the how's and why's of droid development.
dstarfire said:
I thought most custom roms automatically allowed the user root access. After all, managing users and permissions is a function of the kernel, which gets replaced when you flash a new rom, doesn't it?
Of course, there is a very good chance I'm mistaken or just wrong. Either way, this is a great chance to learn the how's and why's of droid development.
Click to expand...
Click to collapse
Sorry if it didn't seem clear, but in the end I'm wanting to create a custom ICS ROM, but right now I'm wanting to at least root.

New user, Please help me root and install custom rom.

Hello everyone,
I am a new Galaxy S4 owner. I would like to root my phone and install a custom rom on it.
Could you recommend a rom? I know there are many developers who have created roms already but I would like some personal advise from people who have flashed various roms already and tried them out.
My preferences are:
1. I want the phone to be stable. I don't want to continually flash different roms. I want one that is free of bugs (mostly, at least), polished and able to be run long term without significant problems or limitations.
2. Personally, I am not a huge fan of TouchWiz and a rom based on the "Google Edition", with a straight and clean Android OS would be preferred. But I would like to retain as many features of the S4 as possible, from the Camera features to the touted (in commercials) S4 apps, at least the ones that would have any value and are not just junk.
3. I don't know much about Kernals, modems and different apps that I could potentially use. If you could recommend some of these I would appreciate it as well.
I did recently update the software on the phone. I asked this in another thread, but does this limit my ability to root? Is there a workaround?
Thanks for the help.
Questions and help issues go in Q&A and help section
Thread moved
Thank you for your cooperation
Friendly Neighborhood Moderator
If you took the OTA update then you are stuck for the time being. You can get root, but no custom recoveries or ROMS.
That said, there is at least one GE ROM running around, but I've not really looked at them as I'm trying TW out for a change.
jrodefeld said:
Hello everyone,
I am a new Galaxy S4 owner. I would like to root my phone and install a custom rom on it.
Could you recommend a rom? I know there are many developers who have created roms already but I would like some personal advise from people who have flashed various roms already and tried them out.
My preferences are:
1. I want the phone to be stable. I don't want to continually flash different roms. I want one that is free of bugs (mostly, at least), polished and able to be run long term without significant problems or limitations.
2. Personally, I am not a huge fan of TouchWiz and a rom based on the "Google Edition", with a straight and clean Android OS would be preferred. But I would like to retain as many features of the S4 as possible, from the Camera features to the touted (in commercials) S4 apps, at least the ones that would have any value and are not just junk.
3. I don't know much about Kernals, modems and different apps that I could potentially use. If you could recommend some of these I would appreciate it as well.
I did recently update the software on the phone. I asked this in another thread, but does this limit my ability to root? Is there a workaround?
Thanks for the help.
Click to expand...
Click to collapse
1) READ. Pick some roms that seem interesting to you and test drive them. Your basic "pick a rom for me" query is strongly frowned upon and will result in a thread lock. Don't expect to be spoonfed- It's a subjective query that only you can answer for yourself. I suspect that the reason it wasn't locked is that you lack the ability to flash any roms, thus rendering your query moot.
2) See 1.
3) Also see 1.
Of course, all this is moot, as you apparently didn't read the multitude of posts regarding the ME7 update that you took. You no longer have the ability to flash custom roms, recoveries, or kernels. Perhaps you missed the very prominent thread in General offering a $3,000 bounty for root and recovery? All you can do is a basic root, a few mods, and use some apps that require root access.
yes unfortunately if you took the dreaded over the air update you can no longer install a custom recovery which is needed for installing any custom rom, There really is a lot you can do with a stock rooted phone like remove the annoying bloatware and back up your apps with titanium!!
I am a new Galaxy S4 owner. I would like to root my phone and install a custom rom on it.
Could you recommend a rom? I know there are many developers who have created roms already but I would like some personal advise from people who have flashed various roms already and tried them out.
My preferences are:
1. I want the phone to be stable. I don't want to continually flash different roms. I want one that is free of bugs (mostly, at least), polished and able to be run long term without significant problems or limitations.
2. Personally, I am not a huge fan of TouchWiz and a rom based on the "Google Edition", with a straight and clean Android OS would be preferred. But I would like to retain as many features of the S4 as possible, from the Camera features to the touted (in commercials) S4 apps, at least the ones that would have any value and are not just junk.
3. I don't know much about Kernals, modems and different apps that I could potentially use. If you could recommend some of these I would appreciate it as well.
I did recently update the software on the phone. I asked this in another thread, but does this limit my ability to root? Is there a workaround?
Thanks for the help.[/QUOTE]

[Q] Is a Custom Rom necessary after rooting

Hi All,
I tried looking but did not get any concrete answers so, Just wanted to know if custom ROMs are necessary after rooting an S3.
I ask this as I have blown up few of my earlier phones(SG S1 and MMX A110) after various combinations of installing and removing different ROMs, Kernels etc.
So now I was hoping to find out if i just root my S3, will it function as it is now. will the stock ROM still be there, or will i have to download and install the stock ROM zip from somewhere?
I want thinking of rooting this mobile as i need USB mass storage, bloatware removal and a few RAM mgmt tools that i generally have used.
please suggest your views on this topic.
myhdmini said:
Hi All,
I tried looking but did not get any concrete answers so, Just wanted to know if custom ROMs are necessary after rooting an S3.
I ask this as I have blown up few of my earlier phones(SG S1 and MMX A110) after various combinations of installing and removing different ROMs, Kernels etc.
So now I was hoping to find out if i just root my S3, will it function as it is now. will the stock ROM still be there, or will i have to download and install the stock ROM zip from somewhere?
I want thinking of rooting this mobile as i need USB mass storage, bloatware removal and a few RAM mgmt tools that i generally have used.
please suggest your views on this topic.
Click to expand...
Click to collapse
(1) all is answered in the guides if you understand the process of rooting
(2) for you explained: rooting does not delete anything, it just gives you more access, hence your stock rom will still be there, meaning you can root a stock rom and keep it or change to a custom one
This will definitely help http://forum.xda-developers.com/showthread.php?t=2362743
Sent from my GT-I9300

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