How To Backup/Restore Kernels In TWRP - Asus Transformer TF700

Hey guys,
Does anyone know exactly how to do this? I remember when I first heard of TWRP someone listed this feature as one of the main reasons for using it over CWM. What I am trying to do is make Nandroids of CleanROM 2.3 with both the stock kernel and Clemsyn's kernel as well.
Thanks in advance!
Sent from my unlocked Transformer Infinity

I_EAT_BABIES said:
Hey guys,
Does anyone know exactly how to do this? I remember when I first heard of TWRP someone listed this feature as one of the main reasons for using it over CWM. What I am trying to do is make Nandroids of CleanROM 2.3 with both the stock kernel and Clemsyn's kernel as well.
Thanks in advance!
Sent from my unlocked Transformer Infinity
Click to expand...
Click to collapse
I don't think you could backup just the kernel in any custom recovery. You could do a nandroid backup which will backup the rom/kernel and apps. So if you want to switch between stock and Clemsyn's kernel, you just run a nandroid backup of cleanrom(this is with stock kernel), and you want to try Clemsyn kernel, just flash the kernel then do another nandroid backup. So the first back will included Cleanrom/stock kernel +apps and the second backup will have cleanrom/Clemsyn kernel + apps. Now you can either just flash the kernel to switch back and forth or do a full restore to switch.

Related

[Q] Will a NANDROID restore to stock 2.3.3 reset my kernel to stock as well?

Checked the list of threads that appeared and didn't receive a definitive answer.
I know that it will restore to stock 2.3.3, but I'm just curious if the kernel will follow suit as well. I'm running Netarchy at the moment, but I want to get back to 100% stock ROM and kernel. I was told by a few people that a simple wipe doesn't always get the kernel. This could be true or false. I don't really care.
I'm assuming if the Stock nandroid backup was 100% stock, that it will restore the kernel, although I'm just looking for a simple confirmation or piece of direction.
Answers are appreciated, or links to a thread that answers the question if I missed it.
Thanks in advance everyone.
Yes if the nandroid back up has the stock kernel. A nandroid is a backup of the current state of your phone. For example, you did a nandroid of your phone when you were on MIUI rom + netarchy kernel. When you restore that nandroid it will restore MIUI + the netarchy kernel.
So if you download a nandroid in the development section then yeah, it should definitely return you to stock as long as that nandroid has the stock kernel.
Sent from my Nexus S using XDA Premium App
Thank you very much for the reply and clarification. I appreciate it.

[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.

Help flashing with kernels. Couple ?s

So coming from dx we had no kernels to worry about. Now, my questions are.
Say I flash to a rom that now has a kernel that's flashed with the rom. And I make a backup before I flash. After being on that rom with a kernel, can I restore the backup and it restores the stock kernel that the backup was running on?
It seems I've read some people coming from cm10 trying to restore to a tw rom and it not booting, thoughts have been because of the cm10 kernel it was
the on?
If I need to flash kernels before restoring backups where do I get stock kernel and what's the proper way to get to a working backup once kernels are involved?
I hope I'm not to confusing here.
Sent from my Synergized vzw S3!
silver04v said:
So coming from dx we had no kernels to worry about. Now, my questions are.
Say I flash to a rom that now has a kernel that's flashed with the rom. And I make a backup before I flash. After being on that rom with a kernel, can I restore the backup and it restores the stock kernel that the backup was running on?
It seems I've read some people coming from cm10 trying to restore to a tw rom and it not booting, thoughts have been because of the cm10 kernel it was
the on?
If I need to flash kernels before restoring backups where do I get stock kernel and what's the proper way to get to a working backup once kernels are involved?
I hope I'm not to confusing here.
Sent from my Synergized vzw S3!
Click to expand...
Click to collapse
im not sure but I think things are a bit different now with the unlocked bootloader. there was a lot of problems between kexec and switching between TW and CM10.
I think that any restore will get you back just fine as it flashes everything back including kernel. just be REALLY careful what CWM you are on. its just safer overall to stick with 6.0.1.0 as it works with every rom.
i have no idea if its on XDA but you can find imoseyon and stock kernel on rootzwiki.com
xicewallx said:
im not sure but I think things are a bit different now with the unlocked bootloader. there was a lot of problems between kexec and switching between TW and CM10.
I think that any restore will get you back just fine as it flashes everything back including kernel. just be REALLY careful what CWM you are on. its just safer overall to stick with 6.0.1.0 as it works with every rom.
i have no idea if its on XDA but you can find imoseyon and stock kernel on rootzwiki.com
Click to expand...
Click to collapse
That helps a little. I know with being unlocked any recovery should work. Twrp has been good to me so far, I'm going to try and stick with it.
Sent from my Synergized vzw S3!
Nobody else is used to flashing with kernels and can give a little input?
Sent from my Synergized vzw S3!
Yes there were issues going from kexec to no kexec...I have tried almost all the ROMs out since the unlocked bootloader and not had any issues with this I have also been using a Sprint kernel and not having any issues...just make sure that you flash aosp kernels if you're using aosp and tw kernels if using a tw ROM...and personally I use TWRP and have never had any issues at all...if using TWRP just pay attention to what you're wiping because you have lots of options there
Delete
1. Unlock your bootloader first. Skip anything that says for k-exec.
2. Use latest CWM.
3. Make sure that any Kernel you use is designed for your type of ROM. JB-AOSP Kernels for JB-AOSP ROMs, ICS-TW for ICS-TW ROMs, etc. Again, make sure it is non-kexec.
4. Always wipe cache and dalvik cache when switching kernels to be sure your dalvik is rebuilt by the new kernel.
If these steps are followed you should be golden. Happy flashing!
Sent from my SCH-I535 using Tapatalk 2

CyanogenMOD 10 back up question.

Hi,
I have followed everything in this thread http://forum.xda-developers.com/showthread.php?t=1837863
I have backups nandroid ready and wasn't too sure, if I dont like this build then i could restore back to stock using CWM? or Odin.
I felt that I need to wait for reply to comfirm before flashing this cyanogenMOD 10.
Thanks!
LeonKnight12 said:
Hi,
I have followed everything in this thread http://forum.xda-developers.com/showthread.php?t=1837863
I have backups nandroid ready and wasn't too sure, if I dont like this build then i could restore back to stock using CWM? or Odin.
I felt that I need to wait for reply to comfirm before flashing this cyanogenMOD 10.
Thanks!
Click to expand...
Click to collapse
IF my memory serves me right, with an unlocked bootloader, you can recover to a TW rom but I think its needs to either have the kernel built into it OR you need to somehow flash to a TW kernel. I say this because I think that if your kernel is still an AOSP one, then the device will not boot up.
some roms already come with a kernel for their rom so I think in most cases, with CWM 6.0.1.x, you could restore a TW nandroid.
If you want to restore a backup of a TouchWiz rom you have then just use the EZ Recovery app to flash the hybrid (CWM/Kexec) recovery...reboot to recovery and restore your nandroid. Simple process!
Once the Dev's building TW roms start using the non-kexec flashing method then you will be able to restore using the normal CWM recovery. Just like you said, you can also use ODIN to restore to stock but it's a pain because you have to root all over again. Just know you have a few options.
Ok thanks everyone!
So good
Fwiw... I've been switching back and forth between Synergy and CM for a couple days now (flashing multiple times) and cwm touch works for synergy but u need new cwm for CM10.
Hope this helps.

Restoring Nandroid w/ Custom Kernel

Hey All,
I am running AOKP B4 and (I believe) Harmony Kernel for AOKP.
I gave the tablet to my Dad and want to restore to stock so he can use the simplified stock apps/system. I have Nandroid backups, but want to make sure I do this right.
Do I need to flash a new kernel (current one I am using is not compatible with stock) before doing the restore? Or will the Nandroid backup restore the original kernel?
I have Rogue Recovery installed.
Thanks!
After you do the nandroid restore, flash the stock kernel before you reboot.
Where can I find the stock kernel? That is half my problem, The ASUS site no longer has any files for the TF101.
Sent from my unlocked Transformer Infinity
I_EAT_BABIES said:
Where can I find the stock kernel? That is half my problem, The ASUS site no longer has any files for the TF101.
Sent from my unlocked Transformer Infinity
Click to expand...
Click to collapse
I still can find tf101 files from asus site
But I have the same question: where can I find a stock kernel ?
(on asus site is not only the kernel but also ROM; I only want the kernel)
Check here to see if there's one you need.
http://forum.xda-developers.com/showthread.php?t=1636215
Another option is Easy Flasher and go completely back to stock.

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