I was wondering if I just flashed this new kernel on my phone but don't like the way it functions, how can I uninstall/unflash it?
Thanks
Create a backup using TWRP, then if you don't like the kernel you can just restore your backup.
Related
So again, sorry for the n00bness but I am learning
How do I backup my stock kernel before I flash a new one like Hydra or King? I've been searching for a while and can't find instructions...
thanks in advance!
...
I believe nandroid backs up the kernel BUT
You can use ROMMANAGER and under Virtuous, you should be able to find the stock kernel, should you need to replace it.
Ahhhh... Awesome. Didn't know that. thanks! And I can flash a new kernel using ROM manager as well, right? Just point to the zip and go? Do a back up of course
Stevez48 said:
Ahhhh... Awesome. Didn't know that. thanks! And I can flash a new kernel using ROM manager as well, right? Just point to the zip and go? Do a back up of course
Click to expand...
Click to collapse
Yes, I have seen that when you install a ROM, customize it, install a kernel, do a backup, when you restore it does restore with the kernel you backed it up with when the backup was done. You should be good with flashing the kernel through Recovery.
Always good to keep backups, as after a ROM install I backup right way, then customize the screens/icons the way I like, back up again, and so on...
Cool, thanks for the help and guidance all... <Cheers>
Hi,
I just flashed the new rmk gingerbread sense ROM to my Desire Z, and I'm thinking of trying the unity v3 kernel since it seems to have better battery life and performance from what I'm reading.
I've never flashed a kernel before. It seems like the flash process is identical to flashing a ROM? i.e. place the zip file in my sdcard, go to ROM manager and flash it there?
How do I backup the previous kernel though? Do I just do a backup via the ROM manager, which backs up everything, or do I backup just the existing kernel? Also, if I have the rmk ROM zip in my sdcard, if anything goes wrong with the kernel flash, can I just flash that zip in recovery boot? That way I don't have to backup anything.
Also, do I still need SetCPU to manage governors and clockspeeds? Not sure if anything has changed...
Thanks!
Do a full nandroid backup before flashing a new kernel. Nandroid backup will back-up the kernel and the entire ROM.
Flashing a kernel.zip is the same as flashing a ROM. Enter recovery, select "install .zip from SDcard" and proceed from there.
If the kernel causes problems or isn't working properly, revert to your previous nandroid backup.
Depending on the ROM and kernel combination, SetCPU may be required or advised, such as with a high OC kernel. Everyone has their own method to setting profiles, however.
Thanks.
I'm using rmk vision gingerbread sense 2.42. If I already have this downloaded ROM zip file in my sdcard, can I just flash back to this, rather than do a nandroid backup and restore to that? Does the nandroid backup keep my user settings?
Thanks.
goister said:
Thanks.
I'm using rmk vision gingerbread sense 2.42. If I already have this downloaded ROM zip file in my sdcard, can I just flash back to this, rather than do a nandroid backup and restore to that? Does the nandroid backup keep my user settings?
Thanks.
Click to expand...
Click to collapse
No, don't just flash over it. You're best off simply using CWM to backup and restore. The nandroid backup makes a complete perfect copy of the state of your phone at that time, restoring to it makes it seem as though nothing has happened after that point.
Maybe a silly question but made a backup of the blend rom using the blend kernel, then installed doomlords kernel and the cyangenmod rom. If I restore my backup does it restore the kernel and rom or just the rom?
rustynuts34 said:
Maybe a silly question but made a backup of the blend rom using the blend kernel, then installed doomlords kernel and the cyangenmod rom. If I restore my backup does it restore the kernel and rom or just the rom?
Click to expand...
Click to collapse
i dont think you can restore kernel by restoring backup. Only backup of roms can be made.
Ok cheers, so will probably have to flash blend kernel first then restore backup then.
Took the plunge and flashed custom ROM and kernel. Battery is being sucked dry at a rate about 10x faster than my stock config. If I restore my nandroid backup from before flashing anything, will the Kernel be restored too?
On the Epic4G three kernel was ina separate partition that had to be flashed on its own. Nor sure if the new memory architecture works the same way.
Sent from my Galaxy Nexus using xda premium
yes, nandroid restore from CWM will restore your kernel too... and you always have a fastboot option to flash your boot.img again if you want run a custom rom with stock kernel
Ahhh... thanks! Wasn't sure if the boot.img listed in the status messages from CWM was the kernel, or something else (like the bootloader, the recovery image, or something else). I'll submit a request to koosh to maybe add parenthetically to the status messages something like this:
backing up boot.img (kernel)
restoring boot.img (kernel)
Samsung apparently does not allow you to boot into the bootloader on their phones. I am trying to return to a different kernel I was using previously, which was contained in a nandroid backup. However, to my understanding, restoring a nandroid backup does not restore the kernel, and you have to extract the boot.img and flash that by itself.
What is the best way to go about doing this without fastboot?
Also, I don't suppose "restore boot" in nandroid advanced restore does this now, does it? Can't find anything on it online.
From what I recall, restoring the nandroid backup would restore the kernel. What recovery was used to create the nandroid?
audit13 said:
From what I recall, restoring the nandroid backup would restore the kernel. What recovery was used to create the nandroid?
Click to expand...
Click to collapse
I used CWM. I read in several places (forums) that it didn't....Hm. I mean I have the boot.img from the backup, so I have the kernel right there. I suppose I could find some way to make it into a flashable zip, but I was just wanting to see if anyone knew a way around that.
But if you are confident that the backup would restore the kernel, do you know if I could restore just the kernel from advanced restore? It'd be fab if I could keep /data the same, but not a must I suppose.
I use TWRP on an HTC and just restored a nandroid backup. After restoring the backup, the previous kernel was restored too.
I don't have any devices at the moment that use CWM.
Not sure about just restoring the kernel. Any particular reason you just want to restore the kernel?
audit13 said:
I use TWRP on an HTC and just restored a nandroid backup. After restoring the backup, the previous kernel was restored too.
I don't have any devices at the moment that use CWM.
Not sure about just restoring the kernel. Any particular reason you just want to restore the kernel?
Click to expand...
Click to collapse
I started getting some problems after flashing a custom kernel and I want to revert to the previous one, the default CM one, to test if my problems are related to that kernel or not. I suppose I'll look into making the .img a flashable zip then, unless anyone else knows of a better way. I'm not familiar enough with Odin to know if you can flash a .img in it.
There's that "restore boot" option in the advanced restore menu on CWM. Do you have any idea what that restores? I want to naturally say that it probably restores the boot.img, but I have searched and searched and just cannot find anything online about what that actually restores.
Nandroid backups created with CWM need to be restored using CWM.
Sorry, not sure what the advanced options will do but you could try different ones.
Restoring boot in advanced nandroid restore restores the zimage and initrd.gz. The kernel. Thus, I suppose a full restore will restore the kernel. Perhaps there are exceptions for certain devices. Restoring boot got me where I needed.
Sent from my SAMSUNG-SGH-I747 using XDA Free mobile app