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CWM, ROM's and kernels...

I hate making a thread like this, but I can't help but feel like I'm going to mess things up if I don't get some clarification. This is only my second android device, so I'm not too familiar with all the steps/processes to properly obtain root and change ROM's and kernels on this device.
I just received my xoom and I'm on 3.0.1. I'd like to run the tiamat kernel and ROM. I understand how to do most of the stuff, I'm just concerned with the proper order in terms of maintaining root when needed and making sure that flashing one thing before another wont cause issues. I'd appreciate it if someone can just list the most direct and proper steps for running the tiamat katana kernel and ROM from 3.0.1.
Thanks in advance

CC Lemon said:
I hate making a thread like this, but I can't help but feel like I'm going to mess things up if I don't get some clarification. This is only my second android device, so I'm not too familiar with all the steps/processes to properly obtain root and change ROM's and kernels on this device.
I just received my xoom and I'm on 3.0.1. I'd like to run the tiamat kernel and ROM. I understand how to do most of the stuff, I'm just concerned with the proper order in terms of maintaining root when needed and making sure that flashing one thing before another wont cause issues. I'd appreciate it if someone can just list the most direct and proper steps for running the tiamat katana kernel and ROM from 3.0.1.
Thanks in advance
Click to expand...
Click to collapse
What you want is actually easier then you think.
fastboot oem unlock
Let your device update itself to 3.1 cause you will need the bootloader.
fastboot flash recovery recovery.img
boot into recovery and flash tiamat 1.1.
That's it. Tiamat rom already has root and the kernel. You will have to download everything, its all in my link below. Biggest mistake is letting the system reboot in the os after you flash recovery as the os will erase it.
Sent from my PG86100

I was planning on using the katana rom and kernel on 3.2. Is there any reason not to go that route?
If I do go with that, would I just follow the kernel instructions and flash the 3.1 found in that thread instead of updating normally since that includes root? So:
-flash tiamat 3.1
-flash tiamat katana rom
-flash katana kernel?
The katana rom gets flashed before the kernel but in the same boot?

CC Lemon said:
I was planning on using the katana rom and kernel on 3.2. Is there any reason not to go that route?
If I do go with that, would I just follow the kernel instructions and flash the 3.1 found in that thread instead of updating normally since that includes root? So:
-flash tiamat 3.1
-flash tiamat katana rom
-flash katana kernel?
The katana rom gets flashed before the kernel but in the same boot?
Click to expand...
Click to collapse
I Would still let it update on its on, just because you need the bootloader thats not in 3.1 rom. Then instead of flashing the 3.1 rom, just flash the 3.2 rom. Then kernel of course.

Thanks for the help! It was a lot easier than I was thinking... I guess I was just paranoid about messing up with my brand new "toy". This is definitely a smoother experience than my phone, so far.

Flashing question

I am new to the Charge but not rooting and Android. I came from the DX so the way things are done in this thing are different. Here's my question:
I am currently rooted and running a rom with a custom kernel. If I use Odin to flash the official software, will I also need to replace the kernel separately or will flashing the official software also restore the original kernel?

You will not need to replace anything, the Odin package is all in one. It will put you back to bare stock which means ROM, kernel, recovery, modem, you name it.
If you wouldn't mind helping could you link me to a rooting guide on a DX? Some general tips on rooting it would be very appreciated. My dad has one and I'd like to root/ROM it for him but i don't feel like studying up >_< Thanks!

Wrightperspective said:
I am new to the Charge but not rooting and Android. I came from the DX so the way things are done in this thing are different. Here's my question:
I am currently rooted and running a rom with a custom kernel. If I use Odin to flash the official software, will I also need to replace the kernel separately or will flashing the official software also restore the original kernel?
Click to expand...
Click to collapse
Odin will replace everything, including your kernel.

Thanks for the response. I got confused because I saw posts saying that some kernels were interchangeable but I didn't know if they meant that you would have to flash the kernel after you flash the rom or if you just flash a new rom and the kernel remains. Appreciate the response.

You have to flash kernal only on cmw versions and not all of them read the pre requisites it will tell you if the cwm version either do not or do.have a kernal included for example humble 5 cwm version I.believe u.have to flash a kernal prior to rebooting or stock recovery will over write cwm happened to me and learned my.lesson the hard way !!!
Sent from my Gummy Charged GBE 2.0 using xda premium

Okay...so flashing the stock file will also get rid of CWM, right?

[Q] About flashing custom ROMs

Hi everyone!
I am fairly new with android and I just rooted my transformer last night. I was also able to install a custom ROM, revolver 3.11.1 (Honeycomb).
If I want to flash an ICS ROM (Revolver, Android Revolution or Codename), from a custom HC ROM, do I have to do anything else? Or can I just flash it straight away?
Based on what I've read, if ever I wish to downgrade back to honeycomb, I would not just flash a honeycomb ROM. I have found a few guides on how to downgrade back to Honeycomb from ICS. Is this correct?

Since you have cwm, It's as simple as going into recovery and flashing your desired custom rom.
Normal procedure (to avoid conflicts/problems) is to wipe and/or format before flashing a new rom.
A good tool to have is the superwipe lite script found in the Revolution HD thread. (I personally use that instead of the wipe option that is in CWM).
Oh...and you can also backup your current ROM and state by using the backup function in CWM BEFORE you wipe/format. Just in case you don't like the new rom and want to revert.
FYI...if you go ICS and want to restore your HC rom...a restore then a reflash of the HC Rom is needed.

Thanks for the reply!
Just to clarify, once I flash an ICS custom ROM and didn't like it, I can't just flash back to a HC custom rom or stock HC rom. Is this correct?

ragnaboy2010 said:
Thanks for the reply!
Just to clarify, once I flash an ICS custom ROM and didn't like it, I can't just flash back to a HC custom rom or stock HC rom. Is this correct?
Click to expand...
Click to collapse
Yup. Even if you use the restore function...you need to flash that particular HC ROM over the restore. (Because the backup doesn't backup the kernel...so if you don't flash the HC rom...the ICS kernel is still there...and you won't be able to boot)

sorry to hijack the thread but my question is similar so i dun want to start a new one
I am currently on revolver 3.11 as well and thinking to update to a ICS custom rom
I am using the blade OC kernel at the moment. I just want to ask if the new rom comes with the ICS kernel or do I need to look for an ICS kernel to put it manually?
Also, I just want to check that Ti Backup does not back up downloaded data right?
Thanks a million

strikeraj said:
sorry to hijack the thread but my question is similar so i dun want to start a new one
I am currently on revolver 3.11 as well and thinking to update to a ICS custom rom
I am using the blade OC kernel at the moment. I just want to ask if the new rom comes with the ICS kernel or do I need to look for an ICS kernel to put it manually?
Also, I just want to check that Ti Backup does not back up downloaded data right?
Thanks a million
Click to expand...
Click to collapse
Everything is included when you flash one of the available ICS ROM.
There is no custom ICS kernel right now anyway as Asus have not released the kernel source.

[Q] JB update and custom kernel

Hi all,
I'm sorry about my stupid question but I really don't know nothing about that . I had rooted and flashed my NS and installed the matr1x kernel (very good btw), and now I knew that JB will be available to NS. My question is, need I back to stock kernel to receive the update?
Thanks
Sent from my Nexus S using xda app-developers app

Gnng
You have to understand that installing an OTA (official update) on a rooted device regardless of what kernel can cause problems, as it did with my Nexus S before. I suggest you make a NANDroid backup at all times before you install any ROMs, official or Custom. You can also use Titanium backup and others.
There's still a slight while until the new JB 4.1 comes out. It's suggested that you install a Custom JB 4.1 ROM for your Nexus S as though you don't cause any problems. I think it's OK if you do it with the kernel pre-installed. But people always install the Custom ROM THEN they install the Kernel, I think installing a new ROM always overwrites the kernel, if it comes with it.
EDIT:
In short, wait for the JB Custom ROM and you don't have to revert back to stock kernel, when you do the update it will automatically overwrite. Most Custom ROMs come with Stock/ordinary kernels. So then the user can flash whatever kernel they like in your case, matr1x.
Wish you the best of luck, and I am waiting for the Nexus S JB to come out as soon as possible

Ota binary patches the boot image iirc. So it can get all messed up.
Sent from my Samsung Epic 4G using Tapatalk 2

Yeah, what he said!
MДЯCЦSДИT said:
Ota binary patches the boot image iirc. So it can get all messed up.
Click to expand...
Click to collapse

andezzat,
Thank you very much for the help.
andezzat said:
Gnng
You have to understand that installing an OTA (official update) on a rooted device regardless of what kernel can cause problems, as it did with my Nexus S before. I suggest you make a NANDroid backup at all times before you install any ROMs, official or Custom. You can also use Titanium backup and others.
Click to expand...
Click to collapse
I didn't any backup before flashing a new kernel :crying:, so what can I do now if I want my stock kernel back?? What's a NANDroid (I know that is a tool but how can I do it?) ? Is Titanium bkp easily?
There's still a slight while until the new JB 4.1 comes out. It's suggested that you install a Custom JB 4.1 ROM for your Nexus S as though you don't cause any problems. I think it's OK if you do it with the kernel pre-installed. But people always install the Custom ROM THEN they install the Kernel, I think installing a new ROM always overwrites the kernel, if it comes with it.
Click to expand...
Click to collapse
I prefer wait for stock JB Rom and probaby I'll , but, can I already find some JB ROM?
In short, wait for the JB Custom ROM and you don't have to revert back to stock kernel, when you do the update it will automatically overwrite. Most Custom ROMs come with Stock/ordinary kernels. So then the user can flash whatever kernel they like in your case, matr1x.
Click to expand...
Click to collapse
I don't need to remove the kernel even unroot my cell, alright?
Thank you!!

Gnng said:
I didn't any backup before flashing a new kernel :crying:, so what can I do now if I want my stock kernel back?? What's a NANDroid (I know that is a tool but how can I do it?) ? Is Titanium bkp easily?
Click to expand...
Click to collapse
A NANDroid backup is a internal memory backup. You can create one by booting into Recovery (Power off your phone and Hold Power and Down on your volume buttons.) If you rooted your phone and unlocked your bootloader (that's what you had to do to flash a new kernel), you should be able to load ClockworkMod or TeamWin Recovery and do a backup of your phone.
Gnng said:
I prefer wait for stock JB Rom and probaby I'll , but, can I already find some JB ROM?
Click to expand...
Click to collapse
There's one rom but it's a port from the SDK and the amount of major bugs is high so it's not recommended but you could try another custom rom meanwhile, I can't go back to stock after trying custom roms, like AOKP and Cyanogenmod 9. Make sure you backup your apps and some settings (not everything will be compatible between stock and custom so pay close attention to which system setting you'll backup) with Titanium Backup.

To sum it all up for you
There's a Jelly Bean release which is unstable and has no sound, and will not be fixed until the REAL version comes out.
NANDroid backs up the whole internal memory on the phone including the system, it can be done from clockworkmod recovery.
Titanium backup, backs up specific settings and information that you choose, available from the playstore.
You don't need to unroot or go back to a STOCK kernel in order to flash a CUSTOM ROM. DO not however flash a STOCK rom after rooting, as at times that can cause problems.
If you want to go back to a STOCK ROM after rooting a device, there's a way, check this guide
http://forum.xda-developers.com/showthread.php?t=1063664
and choose your Nexus S model: To acquire model, go to Settings - About - Baseband version. if it says I9023 at the start that's your Nexus S's model
Choose one of the Fastboot Stock ROMs and use the Fastboot method to flash the ROM. That is a good way to go back to STOCK ROM if anything bad happens
By the way you should expect the new OTA official 4.1 update for the Nexus S to be on your model's page.
NOTE: Using Fastboot to flash a ROM is very clean. However this will delete all your data and if you do everything correctly will lock your bootloader and unroot your phone. So use Fastboot only when you really feel the need to.
Cheers
and stay tuned for Jelly Bean :victory:

andezzat said:
To sum it all up for you
You don't need to unroot or go back to a STOCK kernel in order to flash a CUSTOM ROM. DO not however flash a STOCK rom after rooting, as at times that can cause problems.
Click to expand...
Click to collapse
That means, when I receive the official 4.1 update notification, I should unroot my phone first and just install it after?

Gnng said:
That means, when I receive the official 4.1 update notification, I should unroot my phone first and just install it after?
Click to expand...
Click to collapse
OK first off, do not install the update using the system update method from about, as that is a 100% stuff up if you're still rooted or on a Custom ROM.
However to update I think flashing a stock ROM but USING Clockworkmod works fine!
Someone please confirm, as I am not 100% sure
However what I am sure about is that if you run into any troubles installing your STOCK ROM using Fastboot is very very good and clean, however there are 2 things:
1. You will wipe everything COMPLETELY
2. You need the ROM to be in a fastboot format kind of way for you to flash it
There's a guide and everything for fastboot.
---------- Post added at 12:35 AM ---------- Previous post was at 12:33 AM ----------
Personally I will wait for a custom ROM for 4.1 if it doesn't take too long as that's guaranteed and will obviously be faster and safer to install on a ROOTED device.
Someone still confirm if installing Stock ROM while over Custom ROM while ROOTED through CWM is OK or not!?

Hummm, ok...
I'm already using the Stock ROM, I just flashed a new kernel, and I prefer install the stock kernel and unroot my phone. Just to let it clean.
After I install the JB official update, maybe I flash and root again, depends of Google :laugh:
Do you know where can I download a trust official 4.0.4 kernel from the forums? My phone is a Nexus S I9020AUCKJ1, Version Number: IMM76D
Thanks!!!

A few questions about flashing and kernels.

Since I want to flash the thalamus kernel on my Nexus S with JB, I have to be on a rom and given that no JB factory image is available yet I don't really get what I should do.
When the OTA came out I was on a deoxedex, zipaligned, etc. stock rom of ICS, so, in order to elude the error status 7 issue I flashed the 4.0.4 factory image from google and then flashed the OTA update.
If I want to flash a JB rom, do I have to re-flash an ICS rom? And if so, can it be a non-stock rom or I would get the error status 7 message again?

No. You just need to make sure you have a custom recovery, like CWM. I was on ICS and then flashed a JB ROM with no issues.

chronophase1 said:
No. You just need to make sure you have a custom recovery, like CWM. I was on ICS and then flashed a JB ROM with no issues.
Click to expand...
Click to collapse
Well, factory images just came out so it's fine now.

Haha. I was JUST about to post that. Good news for everybody.