Hello,
Sorry for this very basic question, I am just wondering what is the difference between a Kernel and a ROM? I see in the development forum there are lots of new Kernels, what are these actually optimizing except underclocking or undervolting (understand that terminology). I am also wondering if the Kernels are specific for the original Nexus One 2.1 Android or can you install for example Modaco or Cyan ROM and then a different random Kernel?
Thanks!
To my understanding, a kernel is what directly interacts with the hardware. Every OS has this, but it's more customizable on our phones since it's based on Linux. The Rom contains the OS itself, and the software and file structure therein. The kernel even can tell the OS how fast the processor goes and how much juice to use from the battery.
Hope that makes sense, as I'm no expert. You can mix and match the two as far as I know. I've mixed them, anyway.
Halorin,
Based on what you said, with my stock vibrant ROM 2.1 JI6 update, it is possible to change the kernel or install another kernel (like the CM kernel)?
tomasitoc said:
Halorin,
Based on what you said, with my stock vibrant ROM 2.1 JI6 update, it is possible to change the kernel or install another kernel (like the CM kernel)?
Click to expand...
Click to collapse
That is really a question better suited to the rom 's development thread, but in general yes you can flash a different kernel. Some kernel/rom combinations work better than others, but you really wont know until you try. Get comfortable with nandroid backups and start trying out different kernel combinations until you find one you like.
Usually most custom roms will include a kernel but they usually have tweaks like coding for 720p, oc, and audio tweaks and what not. Alsways do a nandroid back up and start exploring. When flashing kernels always wipe, I think their are exceptions but its best to wipe just in case. Browse XDA, download a kernel from your phone browser, rom manager install from SD, should be in your downloads folder, backup and wipe, repeat until your phone does what you want.
Sent from my Nexus One using XDA App
which is the better to install???
Thank you your post..
but i can't understand clearly.
so.,
which one is better to install NewRom / Kernal. for android phones.
Neither one is better it just depends on what you want to do.
If you want to totally change over your phone to look and function differently then you need to flash a ROM if you just want to keep the same look but want to enable lets say overclocking then flash an overclocked kernel. If it has to do with the hardware mostly then it's probably something that the kernel can change. Although like mentioned above if you flash a ROM most of the time it will come with a custom kernel.
Dude Random21 said:
Neither one is better it just depends on what you want to do.
If you want to totally change over your phone to look and function differently then you need to flash a ROM if you just want to keep the same look but want to enable lets say overclocking then flash an overclocked kernel. If it has to do with the hardware mostly then it's probably something that the kernel can change. Although like mentioned above if you flash a ROM most of the time it will come with a custom kernel.
Click to expand...
Click to collapse
What he said.
ROMs and kernels are two separate things that have two separate functions. Neither is better than the other, but they do complement each other.
Seshu9899 said:
Thank you your post..
but i can't understand clearly.
so.,
which one is better to install NewRom / Kernal. for android phones.
Click to expand...
Click to collapse
I know both Dude Random21 and codesplice have gone into this, but to try and give a bit more info...
The kernel is kinda like the nervous system of the body. It directly interacts with the hardware (which is how it is able to adjust CPU speed) and it is what allows the ROM to function.
The ROM is the rest of the body. Every other aspect of the phone. In fact, most ROMs include custom kernels. Various ROMs give you various features/enhancements/bugfixes. You will probably notice the biggest change in your phone if you load a custom ROM. Most people load the custom kernels to help with battery life as a lot of them allow you to lower the phones minimum processing speed from 245Mhz to 128MHz.
The ROM can change so many different aspects of how the phone works. There is CyanogenMod which is based off of stock Android with a lot of tweaks, bugfixes, and new features added. There is also MIUI, which is similar to the iOS style (not the same, but much closer than stock Android), and then there are a ton others out there.
Then which Rom is best for my samsung galaxy s???
so i am using froyo.jpjpg on my galaxys.
i want to flash new Rom with upgaraded to gingerbread.
can i flash only rom../ kernal also.
which is best Rom for samsung galaxys.
cynogenmod, miui, .?????
battery drain is very fast now ian running rom/kernal.
Start by going to the forum for your phone.
Sent from my Nexus One using XDA App
thank you...
i Start the post from samsung galaxy s..
Seshu9899 said:
thank you...
i Start the post from samsung galaxy s..
Click to expand...
Click to collapse
your welcomed
Nandbackup + Rom & Kernel
One question: when I do a backup with CWM, it is the Nandroid backup you talk about, correct...? Same thing? So, if I do a backup with CWM, it's a backup only of the ROM, or also the stock Kernel...? Imagine that I do a Rom (GingerDX for example), and flash with a custom Kernel.... If things go bad and I do a restore from my backup (stock) CWM, what do I restore? Rom, or Rom + (stock) Kernel...?
Yes, a backup that is done in ClockworkMod (or Amon_RA) is considered a nandroid backup. And this takes a complete snapshot of your system. Your ROM, your kernel, your apps and your data are all inlcuded. The only thing that isn't included is the fat partition on your sdcard. So if things go bad and you restore your nandroid backup, it will go back to however it was when you made the backup.
thanks a lot. reading this thread clear up a lot of things
Hi!
I am currently running Lite'ning ROM 6.1. XXKH3 Kernel version 2.6.35.11-ninphetamine-2.0.5+ [email protected] #20 on SGSII. Phew.
I've tried a lot of ROMS including MIUI, villain, galmetMIUI ICS version . I like Lite'ning ROM because it gave me the least (virtually Nil) problems (FCs/ reboots) and has almost all the features I need (TV-out that's missing from MIUI, good camera with panorama mode, Recording mode in phone). However I miss the CIFS feature. Is it because the kernel does not support it? Can I get CIFS support if I flash another kernel? Any suggesstions on which Kernel should I flash? I realise that this ROM is pretty old now so Can I get additional features with a newer Kernel.
codesplice said:
What he said.
ROMs and kernels are two separate things that have two separate functions. Neither is better than the other, but they do complement each other.
Click to expand...
Click to collapse
That made everything clear. Thanks man. I'm new to the xda but already flashed a new rom that overclocked my CPU to 1.5 and my HTC Sensation 4G Is running so much better right now. However I wish i knew how to thank people... because i see the thanks meter but cannot find where to thank from.
radoslav.trahanov said:
That made everything clear. Thanks man. I'm new to the xda but already flashed a new rom that overclocked my CPU to 1.5 and my HTC Sensation 4G Is running so much better right now. However I wish i knew how to thank people... because i see the thanks meter but cannot find where to thank from.
Click to expand...
Click to collapse
The rom didn't overclock your phone. The kernel did. READ. You came to the MT4GS forum starting up a storm for people not giving you a direct link to the regular MT4G. How is it you cant find the freakin' "thanks" button? THERE'S A FREAKIN' THANKS BUTTON IN EVERY FREAKIN' POST. OPEN YOUR FREAKIN' EYES.
Sori m jst new here..jst b0ught my f0ne 2 m0nths ago. Flashed r0m: gingercrime ITA, flashed kernel: ver 2.6.35.14 v6. And iv overclock my fone 245-710Mhz, smartass. fone: lg optimus one, running on gingerbread 2.3.3
Many thanx xda developers..!!
Related
Hi, I've tried searching but what with the 30 second search delay and all the outdated threads, I'll ask afresh.
I have a rooted N1 with Set CPU running. Is there a simple way to overclock it, and to what speed?
What settings are recommended?
you need a custom kernel, than you can put your clock speed up to the speed, the **** allows you ( 1113, 1150 or 1190 Mhz)
my nexus can handle 1190 mhz, but there are not many kernels for this speed
have fun with your N1
BikerBoy030 said:
you need a custom kernel, than you can put your clock speed up to the speed, the **** allows you ( 1113, 1150 or 1190 Mhz)
my nexus can handle 1190 mhz, but there are not many kernels for this speed
have fun with your N1
Click to expand...
Click to collapse
Sometimes misspellings are both funny and disasterous!
Most people say 1150 is the most you should run at for 24/7 use. I use 1113 on CM7 and the phone seems perfectly happy with this. Whether there is any noticable gain though is another matter
Thanks guys. Is there an easy guide to the recommended new kernel?
Will replacing the kernel lose me any data or SD card stuff or is it safe?
And will new updates like 2.3.4 come in from Google OTA?
Take this rom and you are happy:
http://forum.xda-developers.com/showthread.php?t=653598
2.6.38.4_AVS-CM7_CFS_20110429_1856.ZIP <<< with this,you would be happy
2.3.4? i can't see in the future but why shouldn't it come for our Nexus One
and sorry for my **** :s...i meaned cook of course
edit:
http://www.xda-developers.com/android/android-2-3-4-about-to-roll-out-to-nexus-s-available-for-download-now/
read it
Will this overwrite my data?
I'm confused about the difference between your suggested new "ROM" and the new "kernel" which is actually all I need for overclocking.
Do I have to get a new ROM to get a new kernel, or can I just get the new kernel on its own.
I like to keep things as close to stock as I can.
CJSnet said:
Will this overwrite my data?
I'm confused about the difference between your suggested new "ROM" and the new "kernel" which is actually all I need for overclocking.
Do I have to get a new ROM to get a new kernel, or can I just get the new kernel on its own.
I like to keep things as close to stock as I can.
Click to expand...
Click to collapse
I believe all is required is that you are rooted. Then you can flash a new kernel. Think as a ROM as a new browser you would use to use your phone.
And no flashing kernels do not erase any data. HOWEVER always, always make a backup before flashing anything. Better to be safe than sorry.
Thanks, so the best new "kernel" (rather than ROM) to give me overclocking is?...
Most of the kernels floating around out there are compatible with and made for CM7 or one of its Kang's / and or variants. If you are running a stock ROM, a custom kernel may not be compatible with all of its features, ie the camera may force close etc...
Do a NANDROID, flash a custom kernel and then test. If certain functionalities are gone, restore your NANDROID and either live with stock or try a custom ROM.
Try Kernel Manager from the market
So I flashed CM7 but as predicted the camera doesn't load.
I wasn't able to take a nadroid backup. What else can I do to revert the kernel?
Please help.
Sent from my Nexus One using Tapatalk
CJSnet said:
So I flashed CM7 but as predicted the camera doesn't load.
I wasn't able to take a nadroid backup. What else can I do to revert the kernel?
Please help.
Sent from my Nexus One using Tapatalk
Click to expand...
Click to collapse
Try this kernel: http://forum.xda-developers.com/showthread.php?t=820172
efrant said:
Try this kernel: http://forum.xda-developers.com/showthread.php?t=820172
Click to expand...
Click to collapse
I love you.
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
I just got a captivate last night and i have unlocked and and rooted it
it has a firmware of 2.1 - update 1
idk if thats the most recent update
i was told i can not update the phone with a t-mobile sim card in it so can anyone post a thread on updated versions and what do you all think is the best rom?
THANKS
There is no "best" rom. It's what's "best" for you. Read the forums and learn to flash 2.2 roms first.
I must warn you, flashing becomes very addictive.
Sent from my GT-I9000 using XDA App
Yea i know i have a sidekick 4g and ive tried about every rom on it
thanks for the info though
Tyler0309 said:
Yea i know i have a sidekick 4g and ive tried about every rom on it
thanks for the info though
Click to expand...
Click to collapse
I recommend trying MIUI, the customization is what puts it over the top!
Here are a few different versions of MIUI:
Galnet**What I prefer**
http://www.galnetmiui.co.uk/twooey/v3/Twooey-V3-i897.zip
Prototypes release
http://forum.xda-developers.com/showthread.php?t=1066885
MIUI.us
http://roms.miui.us/1.8.12/MIUI.us_captivatemtd_1.8.12_Eng_Deo_ZipA_Signed.zip
Ok ill give it a try..do i have to update to a different version> im running 2.1 right now
Tyler0309 said:
Ok ill give it a try..do i have to update to a different version> im running 2.1 right now
Click to expand...
Click to collapse
I've not been on 2.1 since phone came out. I would use odin one click to goto 2.2 stock. Root it then install cwm and then follow this guide if your going to try Galnet's MIUI.
http://www.galnetmiui.co.uk/content/forum/guides/(guide)-i897-galaxy-s-captivate-gb-bootloaders/
Then just pop the MIUI.zip on root of sdcard and install from CWM.
Tyler0309 said:
I just got a captivate last night and i have unlocked and and rooted it
it has a firmware of 2.1 - update 1
idk if thats the most recent update
i was told i can not update the phone with a t-mobile sim card in it so can anyone post a thread on updated versions and what do you all think is the best rom?
THANKS
Click to expand...
Click to collapse
Wow... so... You should probably READ a lot more before flashing anything, but I'll give you a few hints to get you going:
1) Make sure you understand what a "PBL", "SBL", "Kernel", and "Modem" are and how they are placed/installed in your phone.
2) Learn how to correctly and safely use ODIN (and/or Heimdall).
3) Learn about the various methods of recovery for "soft bricks", and if necessary for your hardware revision, possibly invest in a jig (also learn what a jig is)
4) There are 2 different types/branches of ROMs for the Captivate:
-- Samsung Branch
-- AOSP Branch
Within the "Samsung" types you have:
- i9000 ROMs (like JVP, JVR, JP8, etc)
- i897 ROMs (like JF6, KF1, etc)
Within the "AOSP" types you have:
- CM7
- MIUI
- Other AOSP-based ROMs
Which is "better" is relative. CM7 and MIUI have features that aren't present in the Samsung ROMs, and both offer a bit more customization than the Samsung ROMs. However, only the Samsung ROMs offer GPU accelerated video playback, and they tend to have significantly better battery life than the AOSP-type ROMs. Also the Samsung-type ROMs used to be much more stable than the AOSP branches, but recently, the tide may have turned in the other direction. Some of the low-level radio settings are also unavailable in any of the AOSP builds. And finally, some of the Samsung stock camera features are unavailable in CM7/MIUI.
It really all depends what you want... Do you want closer to stock "open source" Android? Or do you want Samsung's vision of what they think Android should be?
Also, the whole kernel/modem part is dependent on what branch of ROM you plan on running. When using a i9000-Samsung ROM, you pretty much have to use an i9000 kernel and modem. When using a i897-Samsung ROM, you pretty much have to use an i897 kernel and modem. The rules for CM7/MIUI are a bit more vague, but at the very least you'll need to use a CM7/MIUI (most AOSP-type kernels are interchangeable) compatible kernel.
The best advice is really to try them all out and see what you like the most. If you're currently on stock 2.1 (which it sounds like you are), at the very least you should upgrade to some variant of Gingerbread (2.3.4 preferably). You will definitely notice a big difference in terms of speed and functionality. From there, well, it's all really up to you...
OR alternatively, just start throwing stuff on your phone and see what happens. Just PLEASE don't come crying back in the Captivate General forum with a "OMG I bricked my phone!!! Plz help!!!" thread. Fair warning...
Just a suggestion, but become familiar with Odin one click. Make sure your captivate has 3 button recovery, and read, re- read, and read again the directions of every rom before you flash it. Always make a nandroid back up if possible, and read the threads.if you have questions, so did someone else and the answer is probably already out there .use search. Some People will rip your head off if you don't. as far as miui goes .....i was a flashaholic when I got phone. After switching to miui, It is very unlikely that I will ever leave. Best rom ever imho. And it updates every Friday so that satisfied the flashing urge. Usually it gets better with each release. The last couple have been a little rough though. Might want to spend the 8 bucks and have a download jig on standby. Can get it from mobiltech videos. Its worth it though
Sent from my I897 using XDA Premium App
Shammyh said:
Wow... so... You should probably READ a lot more before flashing anything, but I'll give you a few hints to get you going:
1) Make sure you understand what a "PBL", "SBL", "Kernel", and "Modem" are and how the are placed/installed in your phone.
2) Learn how to correctly and safely use ODIN (and/or Heimdall).
3) Learn about the various methods of recovery for "soft bricks", and if necessary for your hardware revision, possibly invest in a jig (also learn what a jig is)
4) There are 2 different types/branches of ROMs for the Captivate:
-- Samsung Branch
-- AOSP Branch
Within the "Samsung" types you have:
- i9000 ROMs (like JVP, JVR, JP8, etc)
- i897 ROMs (like JF6, KF1, etc)
Within the "AOSP" types you have:
- CM7
- MIUI
- Other AOSP-based ROMs
Which is "better" is relative. CM7 and MIUI have features that aren't present in the Samsung ROMs, and both offer a bit more customization than the Samsung ROMs. However, only the Samsung ROMs offer GPU accelerated video playback, and they tend to have significantly better battery life than the AOSP-type ROMs. Also the Samsung-type ROMs used to be much more stable than the AOSP branches, but recently, the tide may have turned in the other direction. Some of the low-level radio settings are also unavailable in any of the AOSP builds. And finally, some of the Samsung stock camera features are unavailable in CM7/MIUI.
It really all depends what you want... Do you want closer to stock "open source" Android? Or do you want Samsung's vision of what they think Android should be?
Also, the whole kernel/modem part is dependent on what branch of ROM you plan on running. When using a i9000-Samsung ROM, you pretty much have to use an i9000 kernel and modem. When using a i897-Samsung ROM, you pretty much have to use an i897 kernel and modem. The rules for CM7/MIUI are a bit more vague, but at the very least you'll need to use a CM7/MIUI (most AOSP-type kernels are interchangeable) compatible kernel.
The best advice is really to try them all out and see what you like the most. If you're currently on stock 2.1 (which it sounds like you are), at the very least you should upgrade to some variant of Gingerbread (2.3.4 preferably). You will definitely notice a big difference in terms of speed and functionality. From there, well, it's all really up to you...
OR alternatively, just start throwing stuff on your phone and see what happens. Just PLEASE don't come crying back in the Captivate General forum with a "OMG I bricked my phone!!! Plz help!!!" thread. Fair warning...
Click to expand...
Click to collapse
Well said.
Sent from my SAMSUNG-SGH-I897 using XDA Premium App
Tyler0309 said:
I just got a captivate last night and i have unlocked and and rooted it
it has a firmware of 2.1 - update 1
idk if thats the most recent update
i was told i can not update the phone with a t-mobile sim card in it so can anyone post a thread on updated versions and what do you all think is the best rom?
THANKS
Click to expand...
Click to collapse
a very simple and easy way to start with...
2.1 is eclair..
2.2 froyo
2.3 gingerbread..
means 2.1 is oldest and 2.3 is latest in case of official roms..
so obviously new version will hav more features and faster in speed...
so now u can take baby step and install 2.2 ..and use it for few days..and get the feel of it..then again after sometime u can install 2.3...
or else u can directly jump to 2.3....which is gingerbread....u can install stock kf1 on ur phone..its leaked official gb...if u search a bit..u will get it..
then u can use it for a lil while and get the feel of gb stock rom..in the meanwhile u can read xda abt available custom roms..and then install any of them...
coz every memeber here in xda will suggest the custom rom they r using..coz they r lovin the rom then only they r using....like for me..since the time i started flashin..i always used APEX ROM..so i will say its the best....
but again thats just me..
so decision is always urs...
Right, ive had a i9000 for 5 months or so, and ever since i got it, ive found it to be slow, at times laggy. And hate alot of the crap samsung put on it.Which ive not even used.
I reckon its about time i start to make the most of my phone, but dont really know where to start, with these custom roms and rooting and what not.
I basically want it to run smoothly and possibly add a tweaks/features to it which could possibly improve it. However i remember reading somewhere, that ill lose the camera features if i install a custom rom. :l (i could be talking from my arse here)
Also i read that android 4.0 is coming or has come out. Would i be able to upgrade my phone to it ? and should i ?? If not what is the best rom to flash which will make my phone faster and smoother.
Is there anything at all to make it significantly faster, or is it limited by hardware :/
Im currently on:
kernal version 2.6.29
firmware 2.1 -update1
Which i havnt messed with since i got the phone.
Thanks, and sorry for the daft questions.
Oh dear! did you wrote 2.1? Please read basic root steps and install custom rom. I recommend you to start with Cf-root
go here :- http://forum.xda-developers.com/showthread.php?t=788108
As far as 4.0, please wait.
innovat0r said:
Oh dear! did you wrote 2.1? Please read basic root steps and install custom rom. I recommend you to start with Cf-root
go here :- http://forum.xda-developers.com/showthread.php?t=788108
As far as 4.0, please wait.
Click to expand...
Click to collapse
Lol Is 2.1 bad ? hahaha
Sorry for sounding dim, but what have you pointed me to ?? rooting ? installing a rom ? updating kernal ?
And what is the difference between these ? are all 3 needed to get the phone working as i want it to ?
Im totally new to everything andriod so can you please be as clear as possible.
Thank you for your reply.
And sorry again for all the questions.
skweezer said:
Lol Is 2.1 bad ? hahaha
Sorry for sounding dim, but what have you pointed me to ?? rooting ? installing a rom ? updating kernal ?
And what is the difference between these ? are all 3 needed to get the phone working as i want it to ?
Im totally new to everything andriod so can you please be as clear as possible.
Thank you for your reply.
And sorry again for all the questions.
Click to expand...
Click to collapse
OK, here we go...
1. First of all you need to root your device to install a custom rom or kernel. So first root your device with the above thread (cf-root).
2. Choose any rom from so many roms available all over xda. Choose only from the topic which is under your device's category, not from other device's rom,lol.
To do this you need Odin(use search)
3. Once done you will have custom rom and also custom kernel if you wish.
After these you can go for lagfix, like changing from rfs to ext4.
Best of luck.
Thanks, so after ive rooted with cf-root. do i have to install a custom rom and custom kernel, both ?
And which is considered the best rom and kernel ?
thanks
regards
Hey Skweezer,
Recommend you start with these threads:
http://forum.xda-developers.com/showthread.php?t=939752
and:
http://forum.xda-developers.com/showthread.php?t=723596
They will tell you about how to connect your phone to your PC (Samsung USB drivers + adb), 3 button mode (how to avoid bricking your phone), backing up important/unrecoverable data (like your EFS block!), and what (in general) needs to be done to flash custom firmware.
After that, you should be able to pretty much recover from any error (like unplugging your phone mid flash). Now you can go ahead and root your phone and start exploring the wonderful word of custom roms! As for which one is the best, that's like asking "how long is a piece of string?" Some people prefer speed and cutting edge, others value battery life and stability, some aim for the middle of the road.
Personally I've tried tegrak kernel and was really impressed with the speed improvement! However, the limited app space finally turned me back to other kernels. I found the rest to be pretty much six in one, half dozen in the other (ie all about the same)... so pick one you like and just go for it... use it for a while and if it's not to your liking, flash again
Just a quick rundown on android for you... firmware 2.1 = Eclair, 2.2 = Frozen Yoghurt, 2.3 = Gingerbread, 3.0 = Honeycomb (tablet only version of android) and 4.0 = Ice Cream Sandwich (unify android for phone/tablet/tv again). There is a HUGE performance increase from going stock 2.1 to 2.3! so even if you just upgrade to Samsung's Gingerbread release (2.3.3 I believe?) you will notice better performance. Doing lagfix, kernel tweaks, etc is just icing on top of the cake. However, you'll find once you start tweaking, you won't go back to stock
Well, easiest way of starting is installing KIES and letting it update your phone. That's the official way and you won't have to bother with details like kernels, roms, bootloaders, etc and won't void your warranty (if that's the case).
You'll probably be left with with some 2.3.x version. Might as well make a backup from your stuff before upgrading, kies sucks in a general way, but may help you with that.
From that point on, if you still want to press further into customization goodness, there are PLENTY to chose from.
There are mainly 2 kinds of roms:
- Samsung based (someone picks up a sock samsung rom and modifies it with scripts, kernels, themes, apps, etc). These are most of the ones you'll find in the development section of this forum.
- not samsung based (like Cyanogen e MIUI). These are built from Google's sources directly and totally skip samsung. Therefore, samsung apps most likely won't work here. Everything else does.
Personally i'd recommend Cyanogen 7.1 stable as your next rom. It's an extremely optimized and wildly popular rom, with plenty of options that you won't find in any stock rom. They have their own forum i recommend you to look up if you're going their way.
Whatever you do, GET AWAY FROM THAT 2.1
Cheers for alll the replies guys. Im first going to just update via kies. To an official 2.3
If im not happy with that then ill try a custom rom and rooting.
If only it was as simple as jailbreaking and iphone. lool
Right, ust updated to latest version via kies. And instantly alot better, smoother. Has some of those things bulit into the system which i always though were missing.
Ill try it for a week, and see if theres anything i need, or think is missing. Then i might go custom. But right now im happy with it on the latest official version.
Thank you guys, i think you've made me sort of like android a bit more.
Hey there everybody,
I'm a newbie and about to flash my Note.
Though by now having a quite solid idea of the process,
I'm still stuck on this difference.
Is the kernel different to a CWM (like Philz)? Does the
kernel include the CWM (or viceversa)? CWM is the same
of modified recovery?
Is a kernel flashable afterwards , when a custom ROM
is flashed and working, but non satisfying in regards of its
performance (just an example)?
Also: what is a safe kernel compared to a kernel? A custom kernel?
Or.. safe kernel equals modified recovery? I'm really confused..
Thanks for your time
welcome
i understand your confusion, dont worry its very simple. I will explain it.
kernel and recovery are different things. kernel makes your device hardware run the software you put on it and recovery well as the name goes its recovery which lets you do stuff like installing zips, taking backups, doing wipes etc.
i hope you have understood the difference.
Now in N7000 i.e " Note I " the kernel and recovery are in the same partition thus every kernel has its own recovery bundled with it. So if you flash a kernel then the recovery that comes with it gets flashed along it.
to make it more clear take the example of galaxy s3. In GS3 you have to flash the kernel and the recovery seperately because each has a different partition. So there you can choose to have an X recovery for a Y kernel.
I am not sure if you can do so with the N7000 and as far as i remember the last time i tried it, it didnt work and the recovery remained the same even though i tried to flash a different recovery over it. I could be wrong though since i havent actually tried such in a long time.
About CWM, it is a modified recovery which gives your device the ability to flash custom roms which you cannot do so in the recovery that comes with the device. So if you want to flash custom roms then you root your device and install a custom recovery such as CWM or TWRP and flash the zip from it.
Every ROM comes with its own default kernel which gets flashed along with the ROM and thus we do not have to flash kernels seperately for each ROM that we flash but yes you can flash a different kernel for a ROM if you are not satisfied with the performance but make sure its compatible with the rom and supports it by which i mean dont flash a touchwiz kernel on a AOSP ROM etc. Make sure you read the description and instructions in the kernel thread and take a backup in the recovery before flashing anything onto the ROM. Be sure you understand what you are doing or else you risk messing the device
As far as i remember all the kernels are safe for JB and KK, it was ICS that had the unsafe/brick kernel issue but that was solved a long time back so i dont think you need to worry about safe or unsafe kernels anymore unless you are flashing an ICS ROM which i highly doubt you will.
A pro tip would be to make sure you read the instructions and a bit of thread pages to understand whats going on and what you need to do with whatever you are planning to flash
Hope i this helps you and not confuses you even more
Thank you very much
A big fat thank you!!
tysonraylee said:
Hope i this helps you and not confuses you even more
Click to expand...
Click to collapse
..I'm quite loving you <3
Really, it's all clear to me now!
By the way, as you've been so clear and kind to me,
could please explain me the difference between a CyanogenMod ROM
and an AOKP ROM?
I mean, CM is AOSP based and I know the meaning of the acronyms,
but what's the difference?
AndroidePazzoide said:
..I'm quite loving you <3
Really, it's all clear to me now!
By the way, as you've been so clear and kind to me,
could please explain me the difference between a CyanogenMod ROM
and an AOKP ROM?
I mean, CM is AOSP based and I know the meaning of the acronyms,
but what's the difference?
Click to expand...
Click to collapse
no difference, they are modified versions of stock android with different names and each has a community where they keep introducing features and support ROMs. if you look at the features list nowadays there is not really much difference between the two, the only difference I see is CM developed it's own kernel and recovery which can also be used on aosp/aokp based ROMs obviously
hope that helps
REVENGE SOLVES EVERYTHING
Thank you so much!!
tysonraylee said:
no difference, they are modified versions of stock android with different names and each has a community where they keep introducing features and support ROMs. if you look at the features list nowadays there is not really much difference between the two, the only difference I see is CM developed it's own kernel and recovery which can also be used on aosp/aokp based ROMs obviously
hope that helps
REVENGE SOLVES EVERYTHING
Click to expand...
Click to collapse
Once again THANK YOU SO MUCH!! :angel: