Database Develop

[Q] Kernel vs ROM

XDA has a wealth of info, but it does seem to assume that you are already pretty knowledgeable about many of the subjects. I'm brand new to this. I've been reading a lot, but still feel like I'm missing some basics. One question I can't seem to find an answer to is: What's the difference between a Kernel and a ROM? TIA for educating me

Espaa Valorum said:
XDA has a wealth of info, but it does seem to assume that you are already pretty knowledgeable about many of the subjects. I'm brand new to this. I've been reading a lot, but still feel like I'm missing some basics. One question I can't seem to find an answer to is: What's the difference between a Kernel and a ROM? TIA for educating me
Click to expand...
Click to collapse
A ROM is a collection of all your services, phone, sms, bluetooth, applications etc. bundled in a flashable zip or sometimes odin flashable packages. Think of it as a customized operating system. Which it is. Some are themed, some are not.
One thing that every ROM has included is a kernel. The kernel is the interface between your gui (You basically) and the hardware of the phone. The "brains" as it were. When you touch a widget (or whatever) on your screen and something cool happens it's because said widget passed a request for action and the kernel tells the hardware involved to get busy.
Oversimplified, but I hope it clarifies some.

It's not the greatest metaphor, but a ROM is Windows, and a Kernel is your BIOS.

MikeyMike01 said:
It's not the greatest metaphor, but a ROM is Windows, and a Kernel is your BIOS.
Click to expand...
Click to collapse
heading in the right direction but a bit off.
The kernel is the operating system.
The rom is a collection of software that includes user gui and some of the software for hardware to operating system interface.
Windows is actually both a kernel and user gui.
A bios is nether - usually bios is just hardware firmware - but sometimes contain a few other things as well.
The best example from a pc would be a linux distro such as ubuntu - the desktop environment gui ubuntu/gnome would be the " rom " and actual linux operating system running underneath is the kernel.

Alright, thanks for the explanations, it is a little clearer now.
When i got my phone i did the OTA update to JH7, rooted, installed Clockwork and did a ROM backup. So i have that backup saved. I want to try some other tweaks and such that i see mentioned around here all the time, but i wanted to make sure i understood the various pieces before i start messing with it all any further. So having the ROM backup, i should be always be able to get back to the state of the phone at that point right? (I understand it does not include pictures and messages and such.)
I guess what i haven't been able to find is a newbie guide that explains how to start at stock, what steps to take, what to actually do with the backup, how to restore etc. So i'm trying to learn. Thanks for the replies, it helps!

No. going back that way will not always work.
Make sure you can get into download mode, recovery mode, and that your computer is recognizing your device.
If you are flashing roms, at some point you will need odin so this is essential that you can get that to recognize your device in download mode to flash back to stock when something goes awry.
Sent telepathically using vulcan mind meld app.

I was able to get into recovery mode. I did the rooting through an update.zip. My computer also sees my device fine. I used ADB to communicate with it (and remove the market restriction.) I'm on a Linux box, and it seems that Odin is a Win app?

Technically windows has a kernel too, most people just don't talk about it.
Hence the ROM being the whole package as mentioned above is a good metaphor
Sent from my SAMSUNG-SGH-I897 using XDA App

More kernely details
I hate to revive an old thread, but this one is exactly on a topic I am currently researching. Being a noob I have read a lot over the past couple of weeks but am still a little confused about this whole kernel thing.
I know what the kernel does. What confuses me is that I have seen several references (including in this thread) that a ROM will always include a kernel. If that is the case, why is it that some ROMS state "does not come with a kernel" and ask you to flash the "kernel of your choice".
With this in mind I would like to know:
-How can I tell what kernel I am running? Is it the "build number"?
-Since the kernel does not present anything the user actually sees, how could you possibly choose a kernel and like one over the other?
Thanks!

think of it this way...
the rom is a car (the whole thing)
the kernel is the engine (engines have performance options or economy options)
the build (eg 2.1 /2.1 /2.2.1 or 2.3.3 is like the model of car shape, options ect)
the theme is the interior and exterior options. (the looks)
add-on zips such as dialers/battery mods are like aftermarket accessories.
- copyright tristyn russelo 2011
Click to expand...
Click to collapse
to tell what kernel you are on;
menu button > settings >about phone > kernel
to know about each kernel go to the XDA > Captivate > Development area look for [Kernel] at the beginning of each thread. look at the options, read the options, research the options
also there IS visible features of the kernel if it has ClockworkMod Recovery built into it. with this you dont need ROM manager or the update.zip method of Clockwork Mod Recovery (aka CWM)
see the CWM onix kernel idiot guide in my sig.
and check out the XDA wiki for ClockworkMod Recovery. "i started it"
also check out the http://Capfaq.com

TRusselo said:
think of it this way...
the rom is a car (the whole thing)
the kernel is the engine (engines have performance options or economy options)
the build (eg 2.1 /2.1 /2.2.1 or 2.3.3 is like the model of car shape, options ect)
the theme is the interior and exterior options. (the looks)
add-on zips such as dialers/battery mods are like aftermarket accessories.
- copyright tristyn russelo 2011
Click to expand...
Click to collapse
Click to expand...
Click to collapse
That's a great explanation, thanks!

Thanks, Tristyn for that analogy. So my question is, can you just use a "Kernel"? By Tristyn's analogy, it appears that just the kernel is useless as you can't drive a car that only includes the engine (ie: you need the wheels and the frame, etc.).

What? if you flash just a kernel it doesn't delete the framework? It's just like swapping the engine in a car.
Yes if you SOMEHOW only had a kernel installed you get a boot error and it would probably give you the "phone...!....pc" screen.

i added that analogy to my new users guide the other day but expanded...
- "A ROM" is like "a car" nothing in specific but a body, wheels, engine, and paint. a general standard vehicle.
- "Each ROM" or each developer is like an auto maker. Each has their own style, options, focus and customer base. Some are luxury, others economy and some are fully loaded! Some are fully packed and heavy and others are base models and very light. You get to get to choose what you like or need, and for once "price is no object" (donating is appreciated) But you almost always get a whole car!
- "Framework" or "Build" - is like the frame of a car, you cant put SUV parts in a Honda. It just won't work unless you rebuild from scratch (and if you can do that, you would laugh at this analogy!) Parts / Kernels / Mods must be compatible with that framework and that framework must be compatible with your phone.
- "Rooting" or getting a "rooted ROM" is like getting the keys and permission to change ANYTHING in your car! But you dont have a warranty anymore!
- "The Kernel" is like the engine and power systems, it is the "software" engine, it does work and ties all the components together. And engines can be upgraded and tuned up for performance or down for economy!
- The theme is like the paint job. pure looks and enjoyment!
- Other dialers, meta-morphs, mods ect are all after market fun changes, once again only looks not usually any more function.
- The launcher (no rooting or romming needed) is alot like your interior, its the seat you sit in and the controls you touch 75% of the time, until you dig through your glove box or fuse box (back to rom)
Click to expand...
Click to collapse

TRusselo said:
i added that analogy to my new users guide the other day but expanded...
Click to expand...
Click to collapse
Haha very nice Tru! I love it

Sorry to ask repeative questions of Kernel & m0d,
but i failed to understand few Things
1. Whenever we are installing a m0d {like cyanogen, oxygen, etc} iS iT necessary to install another kernel ??? oR can we just run on Stock kernel
2. if we install another kernel can we get back our stock kernel ?
3. Do m0ds come pre-installed wid kernel or do we need to install them seprately.
4. h0w would i know that which kernel is made for which rom ???

If you go to CyanogenMod 7 for Captivate Q&A ( gotta love the search function ) and read the devs OP pretty much all your questions will be answered, infact any rom you care to flash if you read the devs OP they will spell out what you are asking for.

Custom ROM and then a custom Kernel. Is it possible?
Well, I'm a bit confused. Consider this:
I flash the phone with CM7(say). Here I'm assuming that CyanogenMod comes with its own kernel. My question is: Can I flash a custom kernel on top of this setup? and what difference does it make?
One can also think the other way round. I have flashed my phone with a custom kernel. Successively I flash CM7 on to my phone. What happens then? Is the original custom kernel wiped out to be over-written by CM7 kernel? What can be done to keep it intact? Please people solve this dilemma...

saurabh.khare1000 said:
Well, I'm a bit confused. Consider this:
I flash the phone with CM7(say). Here I'm assuming that CyanogenMod comes with its own kernel. My question is: Can I flash a custom kernel on top of this setup? and what difference does it make?
One can also think the other way round. I have flashed my phone with a custom kernel. Successively I flash CM7 on to my phone. What happens then? Is the original custom kernel wiped out to be over-written by CM7 kernel? What can be done to keep it intact? Please people solve this dilemma...
Click to expand...
Click to collapse
It's not really a dilemma. You can flash any appropriate kernel that you want. Flashing CM7 again will give you the CM7 kernel. Simply reflash your other kernel.
My post here explains why you may want to switch
http://forum.xda-developers.com/showthread.php?p=26110276
Swyped from my ICS Samsung Captivate

[Q] Kernel, Rom, Firmware. Some noob questions

Hi there! I'm new to the forum and to android as well.
As you can guess I'm a proud owner of SGS
Since my SGS sucks a bit (random crashes, reboot, RFS) I'm interested in taking the maximum out of it, and I have some questions.
What is the difference between kernel and a rom? As far as I know from Linux and OS theory, kernel is the layer between the user (applications) and the hardware. I also know that most of the ROMs have kernel in them. Then what else the ROM contains?
What is firmware? Is it used a synonym for kernel/rom?
Is it worth installing custom kernel/rom on SGS? I'm a bit paranoid in those things and have some fears about the issue.
Is there a way to install some good kernel (like speedmod) and naked ROM (not someones mod, i.e. a stock android ROM without any additions from third party developers)? Is it hard to make my own ROM based on stock ROM (without touching the kernel, even tough I looked at the code and read books about the linux kernel, I dont yet consider my self a guru to be able to make my own kernel for android), just the modification and custom applications?
Thanks a lot guys!

Everyone has a kernel - even if you don't mod your phone at all. It wouldn't work without one!
Now, if you flash a ROM, you change the whole system including the kernel. If you flash a kernel, you're only changing the core piece of your system.
Sent from my GT-I9000 using XDA App

A rom is a full firmware .
A kernel is the bit at the base level between processors and OS .Or just as you said .
Is it worth installing custom kernel/rom on SGS? I'm a bit paranoid in those things and have some fears about the issue.
YES but its at your risk though SGS is relatively un brick able .
Simplest upgrade would be via Rom Kitchen and build your own rom .
Choose base rom kernel modem and CSC to suit plus themes and apps .
http://forum.xda-developers.com/showthread.php?t=817703
jje

The kernel in android is essentially just a customized Linux kernel. The ROM is basically the application layer and the framework. Usually ROMs include kernels, but you can flash a different compatible kernel.
Firmware usually refers to either all the basic software on your phone (minus the apps) or the ROM, csc and modem.
You can definetly flash a custom kernel onto a stock ROM, which will improve performance a great deal even without a custom ROM. Find instructions aplenty here on XDA.
Sent from my GT-I9000 using XDA Premium App

Thanks for the replies guys!
YES but its at your risk though SGS is relatively un brick able .
Click to expand...
Click to collapse
By un brick able you mean that its hard to brick it, or if I brick it its hard to un brick (fix) it then?
Also I'm having a hard understanding, if kernel is the thing that manages the hardware and also responsible for lagfix then kernel is really what matters for the performance of the phone. How a ROM could improve phones performance?
Also one more questions:
As I understand CSC and modem are connectivity related files (3G internet, APNS etc) right? So its better not to touch them when flashing custom ROM/kernel?
Thanks a lot again!

JJEgan means it's really hard to get to brick your SGS.
The kernel is responsible for the proper functionality and cooperation between hardware parts. As for SGS, it is a common belief that Samsung's RFS is not as robust or "agile" as ext4 FS. Thus, converting RFS to ext4 should increase device's performance (the time needed for the read/write operations to take place is decreased). BUT, in order for the device to function properly, the kernel MUST support ext4 as a file system format otherwise it won't work anymore (This could happen after installing a stock kernel on a device that uses some filesystem apart from rfs). Samsung's stock kernel does not, so you have to replace it, if that's the case.
(E.g. If you format a USB drive under Windows 7 with "exFAT" as its filesystem, you won't be able to access it through Windows XP for example, because XP does not support "exFAT" - Different kernels & Different OS version ).
Yes, CSC and modem.bin are what makes your device a TELEPHONE, too Connectivity issues between your operator and your handset depend on those files. If you can find the latest COMPATIBLE modem file, then go for it.

Thanks for the explanation!
As for CSC and modem, by compatible you mean the same version (XXJPY for example)? How do I know they are compatible with my phone?
Thanks a lot again!

the CSC doesnt have to match the baseband. for exapmle, you can have XXJPY baseband and XXJQ1 modem. (thats what i used to run)
its all about finding the right modem for your region, you want to make sure you get good connections dont ya ? modems affect SMS, Calls, Data, WIFI, so on.....
so you want the right one. If you go to rom kitchen, you can see all the modems and what region they cover

Thanks!
But is there a way not to touch the CSC/modem when flashing custom kernel/ROM? I'm really afraid to mess with those.
Also could someone refer to this question:
Also I'm having a hard understanding, if kernel is the thing that manages the hardware and also responsible for lagfix then kernel is really what matters for the performance of the phone. How a ROM could improve phones performance?
Click to expand...
Click to collapse
Thanks a lot again, and sorry for a bunch of questions!

So is the pda is the kernel then if you are flasing pda/modem/csc?

Yes, PDA is a kernel

skwo said:
Thanks!
But is there a way not to touch the CSC/modem when flashing custom kernel/ROM? I'm really afraid to mess with those.
Also could someone refer to this question:
Thanks a lot again, and sorry for a bunch of questions!
Click to expand...
Click to collapse
Think of the kernel as the drivers and the ROM as the OS. If your drivers are from 1987, windows 7 wont run well, if at all. However, you can have the newest 2011 drivers installed on Windows 95....same thing. Kernel and ROM must be well suited and work together for a good experience.
Sent from my GT-I9000 using xda premium

X-GoD said:
So is the pda is the kernel then if you are flasing pda/modem/csc?
Click to expand...
Click to collapse
Actually if you are flashing a three file firmware with odin, PDA is the ROM, which in this case usually includes a kernel.
If you are flashing a kernel alone onto an already installed ROM, then the kernel is put in the PDA field.
Sent from my GT-I9000 using xda premium

Gingerbread needs a different kernel than Froyo, right?

every firmwarerelease (JVQ, JVP, JVR, JVS, etc..) has its own kernel version.
but with talondev im not sure, cuz there is no distinction between the kernel versions.
with all other custom kernel releases you have specific kernel versions.

yep 10 charrrrr

Terranigmus said:
Gingerbread needs a different kernel than Froyo, right?
Click to expand...
Click to collapse
Yes, be sure to read the kernel's thread to check the version it is made for.
Sent from my GT-I9000 using xda premium

thehackman said:
every firmwarerelease (JVQ, JVP, JVR, JVS, etc..) has its own kernel version.
but with talondev im not sure, cuz there is no distinction between the kernel versions.
with all other custom kernel releases you have specific kernel versions.
Click to expand...
Click to collapse
Actually most custom kernels can work with any firmware build for the same version, froyo or gb. Some devs may base a kernel on a specific firmware, but they usually work on all.
Sent from my GT-I9000 using xda premium

I found the following link that briefs the options that you are looking for. I know this is an old post but thought posting here would help others as well.
donandroid.com/understanding-odin-a-beginners-guide-on-odin-buttons-checkboxes-629
Thanks,
Uresh
skwo said:
Hi there! I'm new to the forum and to android as well.
As you can guess I'm a proud owner of SGS
Since my SGS sucks a bit (random crashes, reboot, RFS) I'm interested in taking the maximum out of it, and I have some questions.
What is the difference between kernel and a rom? As far as I know from Linux and OS theory, kernel is the layer between the user (applications) and the hardware. I also know that most of the ROMs have kernel in them. Then what else the ROM contains?
What is firmware? Is it used a synonym for kernel/rom?
Is it worth installing custom kernel/rom on SGS? I'm a bit paranoid in those things and have some fears about the issue.
Is there a way to install some good kernel (like speedmod) and naked ROM (not someones mod, i.e. a stock android ROM without any additions from third party developers)? Is it hard to make my own ROM based on stock ROM (without touching the kernel, even tough I looked at the code and read books about the linux kernel, I dont yet consider my self a guru to be able to make my own kernel for android), just the modification and custom applications?
Thanks a lot guys!
Click to expand...
Click to collapse

uresh.kuruhuri said:
I found the following link that briefs the options that you are looking for. I know this is an old post but thought posting here would help others as well.
donandroid.com/understanding-odin-a-beginners-guide-on-odin-buttons-checkboxes-629
Thanks,
Uresh
Click to expand...
Click to collapse
thats quite old link u brought up here..........
Sent from my GT-I9000 using xda app-developers app

GB Bootloaders

are the bootloaders the same for captivate and for i9000?
or are there any mods done on the i9000 bootloaders so they would match a captivate device?

I believe so. I have a captivate but I am running continuum 5.5 which is a i9000 ROM. Everything is working great for me so far. If you are asking cause you want to flash a ROM....just follow whichever ROM you choose directions very carefully and to the T. Otherwise you could wind up with some serious problems.
Sent from my GT-I9000 using XDA App

i want to use those BL on a rom im working on i just want to make sure they both work on captivate and on i9000 without the need of any changes and if changes are needed then where.

That unfortunately I don't know. I'm a Lurker more then a Dev. Just trying to learn as I go. U might wanna drop in to one of the ROM threads and pm the Dev of that ROM to ask them. I'm sure they'd be willing to help or at least point u in the right direction. Try the Continuum 5.5 thread. Cezar is awesome with his work.
Sent from my GT-I9000 using XDA App

there is no reason to include bootloaders in a rom ... that could lead to many bricks due to bad cwm flashes especially if both are in there, if it is a gingerbread rom have people flash the bootloaders and kernel in odin and then flash the rom.
There aren't any changes done to them though ... They are the exact same as the I9000. The only thing that gets tweaked from device to device is the kernel.

thanks for the answer,i asked coz i like to make a tar file thats flashes the.bl with the rom to save people time.
Sent from my GT-I9000 using XDA App

Well then, if it's in a .tar that changes my first paragraph, that should be fine, the betas for continuum 5 were just one .tar with everything, bootloaders included, that's actually how I first made the leap.
Just it sounds like a bad idea to me to put them in cwm zips.

In the first place, it is not a good idea at all to incorporate bootloaders in a rom zip to flash... It would just lead to many more bricks and many unhappy people . Besides, flashing the bootloaders through odin is super simple and much more reliable

ten22 said:
In the first place, it is not a good idea at all to incorporate bootloaders in a rom zip to flash... It would just lead to many more bricks and many unhappy people . Besides, flashing the bootloaders through odin is super simple and much more reliable
Click to expand...
Click to collapse
Did you not see any of the posts in the thread? I said the exact same thing you just did
And he isn't making a cwm zip he's making an odin flashable .tar with everything included.

[Q] The ICS Kernels and Recovery bug thread. Is it resolved?

Hey, guys,
I'm talking about this thread http://forum.xda-developers.com/showthread.php?t=1633943
Are these issues resolved somehow? I'm sitting on ICS Stunner ROM and I'm afraid to do anything serious with my phone.
Shouldn't there be fixes when Samsung released official AOSP source of Notes' ICS?
Or am I missing something? I really want to do a completely clean install of some ROM, because my current ROM (the newest version of Stunner) works terribly, forcecloses, slugish, freezing all the time.
Can the behavior of my phone have something to do with the problem discussed in the thread I linked? (I don't understand anything in that thread )

Hi
The issues regarding superbrick arent completely resolved. But there are Kernels for ICS wich contain a workaround. And so far noone has reported bricking with them.
It seems like the official kernel source from sammy still contained that bug. But now it has been bypassed. Still noone is completely sure yet that they are 100% safewhen it comes to wiping etc.

There is also a workaround to repartition the data section effectively bypassing any damaged areas for anyone that has a brick and no warranty.
This of course reduces the data partitions size, and it's still pot luck as to how much damage would occur.
It's also a pretty tricky operation.
Sent from my GT-N7000 using xda premium

So if I want to install a stock ICS rom (the newly released one, not the old leak), I should dooo, what? Which is the safe kernel (the one with a workaround)?..
Sorry for stupid questions..

Probably worth flashing stock ics ROM, with a custom kernel that's safe. Probably best to do it in mobile Odin. Make sure you extract the firmware file and only select ROM partition, then separately point to kernel.
Sent from my GT-N7000 using xda premium

I think its better to be in Stock rom what we got and never do any experiment, instead of wasting time on it to get very little stuff with high risk.
even if some work around solution is there, its very hard to understand and not all will be doing that.

I totally agree. Wait for safe ics kernels or use modified Cm9's for now.
Sent from my GT-N7000 using xda premium

So just to be sure:
I use this ROM http://forum.xda-developers.com/showthread.php?t=1646088
And a kernel? You mentioned CM9 kernel. How do I get it? Can I find it in here http://get.cm/?device=n7000 (I mean is it somehwere in the .zip?)
Or are all those franco/abbyss kernels also considered relatively safe?
Thanks for your patience

No you cant use Cm9 kernels with stock rom. If you flash a stock rom you get a stock kernel included

What if I flash chainfires kernel first and the flash stock rom?

Cyrusas said:
What if I flash chainfires kernel first and the flash stock rom?
Click to expand...
Click to collapse
No, either use a GB kernel or use Franco's #3+, or SpeedMod K3-3, CF's ICS kernels are NOT safe.

Ics scaring me

Hi Guys,
I am a new user in the community as well i am a new owner of a galaxy note.I purchased it 3 days back,I have no knowledge about ANDROiD as i have been using NOKIA since last 7 years.
I have a very few simple questions on which i would like to take your EXPERT advice
1.I have updated the FIRMWARE to ICS now.Now after i have updated it i feel that the battery is draining too fast,Just wanted to know how to fix it.
2.Also i have heard that there is a bug in ICS which can brick the phone.How can i check if that bug is there in my Phone or not?
3.Also wanted to know as to how can i make sure that i get atleast 1.5 days from normal use
Please reply back guys as i am very eager to use this fone but when i see the battery backup i feel very disappointed
Please help

dilpreetpuri said:
Hi Guys,
I am a new user in the community as well i am a new owner of a galaxy note.I purchased it 3 days back,I have no knowledge about ANDROiD as i have been using NOKIA since last 7 years.
I have a very few simple questions on which i would like to take your EXPERT advice
1.I have updated the FIRMWARE to ICS now.Now after i have updated it i feel that the battery is draining too fast,Just wanted to know how to fix it.
2.Also i have heard that there is a bug in ICS which can brick the phone.How can i check if that bug is there in my Phone or not?
3.Also wanted to know as to how can i make sure that i get atleast 1.5 days from normal use
Please reply back guys as i am very eager to use this fone but when i see the battery backup i feel very disappointed
Please help
Click to expand...
Click to collapse
If you are running stock ICS(which I'm sure you are) you should assume that you are affected by the bug.
Refrain from doing factory reset using the STOCK/CWM recovery as this will trigger the bug even on STOCK recovery. If you have CWM do not do a NANDROID RESTORE.
If you are rooted i suggest flashing a safe custom kernel, a good one that I can
recommend for solid battery life and balanced performance is Speedmod k3-3 just look for it on the development section.
If you don't like custom kernels and prefer stock just do not do the ones I've mentioned above. If you really need to do a factory reset do it on Gingerbread.
Regarding the battery life, there are many factors to consider. First thing that you need to check if your phone is going into deep sleep. Download cpuspy on play store and report back here so we can help you.

HOLY CRAPPPPPP
Well i have already done the FACTORY RESET 2 times but now its working fine so far
So what should i do now?????????????????????????

Also i would like to know if i can switch back to gingerbread os using Skies software?????????????????

You cant use Kies but Id recommend using ODIN because its faster and safer.
Check out dr.ketans guide http://forum.xda-developers.com/showthread.php?t=1424997, the man is a genius.
His English isnt great, but essentially
Download ODIN
Download whichever stock rom you want (GB)
Set phone to download mode
Connect to Odin
and flash.
His instructions are a lot more detailed (maybe to much so). But if you do this, the dangerous kernel will be gone and youll be safe.

I know where you are coming from being fairly new to the android scene. Have been in it now for about six months and i would consider myself fairly literate. From what you were saying you updated your phone to the official ics version for your phone. Well... The first thing you need to do my friend is read, read, and read some more. Alot of what i know and have learned has been from researching these forums and the web. Rootgalaxynote.com is pretty good for noobs as it usually has videos showing you how to do things step by step but you should also read some of the faq's about rooting and flashing on this site. If i were in your shoes the first thing that i would do would be the following;
1.) root the device using Dr. Keetans method on this site. If you havent done this it wouuld be a good place to egt started. His method will not trigger your phones counter.
2.) I would revert the phone back to its earlier version which would be gingerbread. You can do this by looking in the stock gingerbread roms section under android development on this site. Our fellow senior members have made it fairly easy to find and after reading you should have a pretty good idea of what to do.
3.) Install a kernel that is safe for ics roms such as franco kernel or abyssnote kernel. This should be fairly easy for you to do just make sure you do tue steps exactly as they describe or else you will mess the phone up.
4.) After that you can pick out a custom ics rom which if you are looking for optimal battery consumption this would be the best way to go about it as official ics rom consumes a substantial amount more battery than the sleak, lean more refined custom roms out there. Just be carefull what you choose as some are full of bugs and features not working.
The main thing here is to cover alot of ground and do your homework. Research is key and you always want to stick with sites like xda and a few others. Xda may not be the most user friendly site out there but it contains a wealth of information and iw where the best of the best come together. Hope this helps my friend.

dilpreetpuri said:
HOLY CRAPPPPPP
Well i have already done the FACTORY RESET 2 times but now its working fine so far
So what should i do now?????????????????????????
Click to expand...
Click to collapse
If you can still run it fine, then you're good. But from now on refrain from doing things on the recovery until you're on a safe kernel. Some users reported that they were able to do a factory reset to the nth time before encountering the brick. Meaning you can factory reset 999 times and get away with it and on the 1000th time, brick ur device seriously god knows when it will happen.
Just stay away from CWM or Stock recovery for now if you don't know what you're doing just to be safe.
P.S. ICS is nothing to be scared of if you know what you're doing. Do a little research about the hardbrick bug good place
to start reading about it is this POST

Well i completely agree with you mate and i need to do a lot of homework before i make any change.However since i am very new to the terminology used in ANDROID so would like to ask you if there is any website which can explain me a lil bit about these terminologies so that i know what everbody is talking about or is it that i should simply go through the forums and then join all the bits and pieces to get an idea about the terms used.
Also i would like to ask you that "ODIN" is it like another software which is used to flash the FIRMWARE

dilpreetpuri said:
Well i completely agree with you mate and i need to do a lot of homework before i make any change.However since i am very new to the terminology used in ANDROID so would like to ask you if there is any website which can explain me a lil bit about these terminologies so that i know what everbody is talking about or is it that i should simply go through the forums and then join all the bits and pieces to get an idea about the terms used.
Also i would like to ask you that "ODIN" is it like another software which is used to flash the FIRMWARE
Click to expand...
Click to collapse
hmm. website... ? well you can start on this website http://developer.android.com/about/index.html and don't forget our ever loved website.. (XDA-DEV)...
Just by snooping, hanging around, munch and digest all you can and soon you'll be able to pick some neat tricks in learning android terminologies in no time at all.
ODIN (PC /Mobile) is a very neat indispensable tool for custom room makers and flashers... With this tool you can always at your disposal.. whilst jump from one custom rom to another, which ever your choice or liking. Changing ROMS is akin to Flashing.. so if you flash a ROM, you are changing your current ROM to whatever ROM you would like to have it installed on your phone.
Every custom ROM has its highlights and lowlights... pick what suits you best and your good to go after. Flashing ROMs with Gingerbread support (if your still in stock GB), assures you no brick at all... Now on the other hand, if your already in ICS(Stock) and would like to flash custom roms with iCS support.. then I do warn you to be wary of it. A lot of people have fallen and have been bitten by the hardbrick bug... Just always be extra careful in doing it.
Cheers bud!

First of all i really thank everyone for their help considering that i am a noob when it comes to android
2ndly i am alos getting an impression that Gingerbread is a better bet as of now till there is a permanent fix for the Bug and secondly i am getting an impression that GB was much better when it comes to the battery backup
Correct me if i am wrong
Alos a clarification
Stock rom means the firmware from SAMSUNG?Am i correct?
Custom rom means that it has been tweaked to avoid any known issues?Am i correct?
Also if i change from custom to stock riom does that hamper the warrenty or not?

dilpreetpuri said:
First of all i really thank everyone for their help considering that i am a noob when it comes to android
2ndly i am alos getting an impression that Gingerbread is a better bet as of now till there is a permanent fix for the Bug and secondly i am getting an impression that GB was much better when it comes to the battery backup
Correct me if i am wrong
Click to expand...
Click to collapse
Right
dilpreetpuri said:
Alos a clarification
Stock rom means the firmware from SAMSUNG?Am i correct?
Click to expand...
Click to collapse
Correct
dilpreetpuri said:
Custom rom means that it has been tweaked to avoid any known issues?Am i correct?
Click to expand...
Click to collapse
Correct
dilpreetpuri said:
Also if i change from custom to stock riom does that hamper the warrenty or not?
Click to expand...
Click to collapse
Yes! Flash it back to Stock Rom and unroot it. You should be good to go.

You should not worry too much about the bricking bug. If you stay on stock rom and your phone gets bricked you are covered by the warranty. It is not your fault that the phone has that problem.
I also recommend that you ask some friend that has experience to help if you want to flash/root/install custom rom, given that you have little experience with android.

i have just checked in and found this link "Root Your Phone"
This means he is going back to a particular version
Right?
http://www.youtube.com/watch?v=EV3PLcYbAnU

Dilpreet,
U remind me of myself 2 years back when I was equally inquisitive, enthusiastic but lacking knowledge...
First of all... There is no problem whatsoever if you remain on stock(yes u r right official) Samsung ics provided you don't do factory reset ahead.
2. U need to familiarize yourself with android terminology such as rooting, flashing custom (yes again u r right tweaked) roms, recovery mode, download mode, full wipe, Odin, directly/not directly root able roms etc etc... I am not trying to psyche you out but just giving a word of caution. Unless you know all of these terminologies well (you will get lot of reading on xda on each of this) , PLEASE DO NOT ATTEMPT ANYTHING. By anything I mean even reverting to GB. U must have updated from GB to iCS OTA (over the air) that is on device itself but this rversal won't be easy unless u fully know what u r doing... so first familiarize urself and then get into it.
3. As regards battery life on stock ics , you can use app named juice defender (available on play store) it has lot of options for battery saving. Besides check if GPS and wifi options are not switched on when not in use... some apps are battery hoggers. Check battery usage under settings ---- battery to see how its doing.
4. There are few safe ics kernels available like what has been told u before by some people in this thread... I would strongly suggest Cm9 or any cm9 based rom like asylum (btw Cm stands for cyanogenmod ) which are smooth and safe & yes extremely battery efficient too.
5. Lastly, I will pm you one apk file which will help you know whether your phone has a brick bug or not... do uninstall that application after you check it. For installing any external app (apk file) you need to go in settings ---- security --- and tick unknown sources
PS: Do click Thanks if I have been of any help mate
Sent from my GT-N7000 using xda app-developers app

Nopes... rooting is gaining administrator rights over your phone. In simple terms , being able to access system folder on your phone... Beware, rooting voids warranty.. Please refer Dr. ketan's guide on rooting note on other thread... That's best
Sent from my GT-N7000 using xda app-developers app

". Lastly, I will pm you one apk file which will help you know whether your phone has a brick bug or not... do uninstall that application after you check it. For installing any external app (apk file) you need to go in settings ---- security --- and tick unknown sources:"
Thanks for the info mate
And i have already checked the article which helps you to check if your handset is affected or not and what i could understand was that we just have to install the application and then run the application and will generate a result
But what after that?
I mean how ill i come to know which files to look for which will tell us if its affected or not
I am not aware as to which all files to look for
Please help me

It will throw up the result after checking.. u need not look for anything... it will tell u if ur phone is prone to brick bug.. check it urself. Have sent u the apk file already through pm (personal message).
This will just tell you if you are really prone to this bug, nothing beyond that. If you are then you have three options:
1. Stick to stock ics rom but don't do full wipe again
2. Revert to stock GB through Odin
3. Switch to safe ics kernel (and enjoy lovely ics experience without boring Samsung touchwiz)
For the last you will have to root your phone for remaining, rooting not required.
PS: Please press Thanks button if I have helped you anyway
Sent using xda forum app
Device: SGN N7000
ROM: Asylum V.15

dilpreetpuri said:
HOLY CRAPPPPPP
Well i have already done the FACTORY RESET 2 times but now its working fine so far
So what should i do now?????????????????????????
Click to expand...
Click to collapse
What ROM are you on exactly??I've heard this brick issue is solved in the ROMS released last month.With CF-root 5.6 it's even safe to wipe.But no one dares to try apparently so it needs confirmation.

I am on 4.0.3
Any help guys??????????????????????

dilpreetpuri said:
HOLY CRAPPPPPP
Well i have already done the FACTORY RESET 2 times but now its working fine so far
So what should i do now?????????????????????????
Click to expand...
Click to collapse
Lol...I know just how you feel, searching for answers!