[Q] Flashing custom Kernel after ROM update? - Android Q&A, Help & Troubleshooting

Hi there,
So I've been looking into flashing custom kernels, and I can't seem to find an answer to this question. Basically, I'm wondering if the kernel remains after installing a new nightly, or do I have to reflash the kernel every time the ROM updates?
Thanks

BentMachine said:
Hi there,
So I've been looking into flashing custom kernels, and I can't seem to find an answer to this question. Basically, I'm wondering if the kernel remains after installing a new nightly, or do I have to reflash the kernel every time the ROM updates?
Thanks
Click to expand...
Click to collapse
download kernel
put in sd
go to recovery
flash it
reboot

Related

[Q] Need help understanding root, firmware, kernals and roms

Hey Forum,
I was hoping you guys would be able to help me out. i'm coming from the HTC Legend and kinda lost when it comes to Samsung.
1. what is all this firmware info i keep seeing? is it just the firmware or do i have to match current firmware on my phone to the firmware of the ROM i want to flash?
2. kernels do i flash a ROM and kernel each time or is it all ROM's come with a kernel? or is it the same as HTC, once you find a ROM just flash it through CWM?
3. how do i get root? should i just flash CF-root and then flash ROM's from there?
I'm sorry for asking i know that all this information should be somewhere but most guides seem to be written with the assumption that you owned a Samsung device previously
A big thanks to anyone who can help
thanks,
50-3
50-3 said:
Hey Forum,
I was hoping you guys would be able to help me out. i'm coming from the HTC Legend and kinda lost when it comes to Samsung.
Guide
http://forum.xda-developers.com/showthread.php?t=1125282
1. what is all this firmware info i keep seeing? is it just the firmware or do i have to match current firmware on my phone to the firmware of the ROM i want to flash?
No try any firmware a before b 3 after 2
2. kernels do i flash a ROM and kernel each time or is it all ROM's come with a kernel? or is it the same as HTC, once you find a ROM just flash it through CWM?
Roms are with a kernel Flash depends upon the roms instructions but most are CWM except for stock roms .
3. how do i get root? should i just flash CF-root and then flash ROM's from there?
Follow the root thread .
Root + CWM .
http://forum.xda-developers.com/showthread.php?t=1103399
jje
Click to expand...
Click to collapse

[Q] Question about flashing ROMs and Kernels

I was just wondering if you flash a new ROM is it necessary to flash a kernel right after? I just recently flashed the ICS port on my Nexus S and I was wondering if I have to flash my kernel again. Thanks
No, you do not have to flash a kernel after flashing a rom. Plus, using that rom (which is in its very early stages), it's not recommended that you flash anything on it.
Slaii1030 said:
I was just wondering if you flash a new ROM is it necessary to flash a kernel right after? I just recently flashed the ICS port on my Nexus S and I was wondering if I have to flash my kernel again. Thanks
Click to expand...
Click to collapse
every rom has its own kernel do not flash another one unless u got problems with stability/battery.
[email protected] said:
do not flash another one unless u got problems with stability/battery.
Click to expand...
Click to collapse
...or you want better performance and many new features.

Where Download?

I'm sorry if this is a stupid question, but I need to install only a recovery, because a custom rom brings ROOT. I'll use ODIN, where I can find recoverys in tar format, because the one I have, is the site of ClockworkMod and is in zip.
Thanks to all.
ferrarinews said:
I'm sorry if this is a stupid question, but I need to install only a recovery, because a custom rom brings ROOT. I'll use ODIN, where I can find recoverys in tar format, because the one I have, is the site of ClockworkMod and is in zip.
Thanks to all.
Click to expand...
Click to collapse
why do you need a recovery if you are not going to install custom roms. You already have the stock recovery to whatever you are going to do
ferrarinews said:
I'm sorry if this is a stupid question, but I need to install only a recovery, because a custom rom brings ROOT. I'll use ODIN, where I can find recoverys in tar format, because the one I have, is the site of ClockworkMod and is in zip.
Thanks to all.
Click to expand...
Click to collapse
Lol, you must know that CWM is integrated into the kernel, so if you need CWM you must install a custom kernel(insecure kernel) having CWM, and all custom kernels are made to enable rooting, trying to push CWM into stock kernel(secure kernel) is pretty dangerous and you might brick your phone, and stock has its on recovery mode which you can use. Anyway before performing any wipe or factory reset check whether if you have super brick bug if you are running ICS 4.0.4, and stupid question or not try including more details about your phone.
Sent from my Galaxy Tab 7.0 Plus
I thank people who write helpful posts, so i expect the same.
king_below_my_lord said:
Lol, you must know that CWM is integrated into the kernel, so if you need CWM you must install a custom kernel(insecure kernel) having CWM, and all custom kernels are made to enable rooting, trying to push CWM into stock kernel(secure kernel) is pretty dangerous and you might brick your phone, and stock has its on recovery mode which you can use. Anyway before performing any wipe or factory reset check whether if you have super brick bug if you are running ICS 4.0.4, and stupid question or not try including more details about your phone.
Sent from my Galaxy Tab 7.0 Plus
I thank people who write helpful posts, so i expect the same.
Click to expand...
Click to collapse
Ok.
Before anything thanks.
I want to install a CUSTOM ROM, like cyanogem, slim bean, etc. So your idea is install a kernel, but I can install recovery and then custom rom, right?
And this insecure kernel, can you give me the link to download?
Thanks.
P.S. - My SII have Gingerbread 2.3.5. original, I don't have touch in nothing.
ferrarinews said:
Ok.
Before anything thanks.
I want to install a CUSTOM ROM, like cyanogem, slim bean, etc. So your idea is install a kernel, but I can install recovery and then custom rom, right?
And this insecure kernel, can you give me the link to download?
Thanks.
P.S. - My SII have Gingerbread 2.3.5. original, I don't have touch in nothing.
Click to expand...
Click to collapse
I suggest you to update your phone to official ICS before flashing an insecure kernel

do I need to flash a appropriate kernel before flashing a rom

I see a lot of ROMS posted list kernels other than mine (NC2). Do I need to flash those kernels prior to flashing those roms or not?
Also, If I want to go back to a NC2 roms will I night to flash that kernel back?
I am confused, please lmk. Thanks!
panxpany said:
I see a lot of ROMS posted list kernels other than mine (NC2). Do I need to flash those kernels prior to flashing those roms or not?
Also, If I want to go back to a NC2 roms will I night to flash that kernel back?
I am confused, please lmk. Thanks!
Click to expand...
Click to collapse
No need to flash kernal.
But, If your developer of Rom said that custom Kernal is required then you should flash custom kernal....
For backing to stock rom you need SP TOOLS (Smart phone tool) & Scatter file.
Every custom Rom does have its own kernel included which works perfectly with it. You don't need to flash any kernel. Just if you want to change the kernel you can change it afterwards. If you want to go back to your rom you have had before, just backup your system folder with twrp for example recovery and then you can restore it back. Hope that helped.

Flashing over custom kernel

Hello guys, I'm on custom AEX treble build with Franco kernel.
My question is: can I flash other custom ROMs over custom kernel or will I have to go back stock kernel before flashing other treble build?
vbchimtekar said:
Hello guys, I'm on custom AEX treble build with Franco kernel.
My question is: can I flash other custom ROMs over custom kernel or will I have to go back stock kernel before flashing other treble build?
Click to expand...
Click to collapse
I am going to assume that you are going to do a clean flash/factory reset (deleting apps and their data). When you flash a rom it flashes a kernel so custom kernel is gone.
Although you didn't ask I will state it anyways. If you are trying different custom kernels you need to flash back to the roms original kernel before flashing a new kernel.
cidxtc said:
I am going to assume that you are going to do a clean flash/factory reset (deleting apps and their data). When you flash a rom it flashes a kernel so custom kernel is gone.
Although you didn't ask I will state it anyways. If you are trying different custom kernels you need to flash back to the roms original kernel before flashing a new kernel.
Click to expand...
Click to collapse
I had flash custom kernel once only. Thanks bro for your help.

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