Kernels - Epic 4G Q&A, Help & Troubleshooting

How do I uninstall a kernel?
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Assuming you're just trying to revert to a previous kernel...you'll have to re-flash your kernel of choice.
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Install another one, if its a bonsai based rom you'll have to flash the whole rom over again. If you want the stock kernel same thing, flash the whole rom.

Related

Flashing a Kernel

Yesterday I installed a ROM for the first time. Today I would like to try a different Kernel. How do I just install JUST the kernel ?
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Kernels are flashed same way you flashed the ROM. Put it on your SD card, boot into recovery, wipe cache and dalvix x2, and install from SD card.
will i have to install the rom also all over again ?
No. You wont have to reinstall the ROM.
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perhaps this will be of help. this is for CM6, but the steps are the same for Sense ROMs.
http://forum.xda-developers.com/showthread.php?t=808836
morjeff said:
Yesterday I installed a ROM for the first time. Today I would like to try a different Kernel. How do I just install JUST the kernel ?
Make sure that if u have a sense rom, u have a sense kernel.. if u ever get bootloops just reflash the rom and the kernel will be replaced
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Manuel kernel install?

Was wondering of there is a way to manually install a kernel via pc into a rom?
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k_chupe said:
Was wondering of there is a way to manually install a kernel via pc into a rom?
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Why don't you just reboot into recovery and flash the zip?
I wonder as well how to do this. What if my SD card takes a crap and I don't have another. How to install a custom kernel via ADB ?
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I an building a rom and want to scrap the stock kernel and replace it with a custom kernel. In other words, I want to pre load a custom kernel into a stock based rom. I want to do this from my pc. Any idea how to do this?
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k_chupe said:
I an building a rom and want to scrap the stock kernel and replace it with a custom kernel. In other words, I want to pre load a custom kernel into a stock based rom. I want to do this from my pc. Any idea how to do this?
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Ahh. No sorry I have no idea.
Maybe a question to tuff for the devs...?
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Compile the kernel then use koushes "any kernel flasher" to flash the kernel through recovery
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Cannot install any kernel why?

Don't understand all kernel try flash keeps me in bootloop why? I Follow the steps right end up getting bootloop I even switch different recovers the same problem.
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You wiped cache and dalvik, then flashed?
Yes, always end up in a bootloop
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Try this:
-boot into your rom, backup all your apps, home screen, ect
-boot into recovery, do a complete wipe, flash your rom, boot into the rom
-boot back into recovery, wipe cache, dalvik, then flash kernel, reboot.
You're also flashing an aosp kernel for an aosp rom, and sense kernel on sense rom, not mixing them?
There's one time I manage to flash taimat sbc on sense the only problem it made graphic flickering so I restore back to stock kernel. The was it after that i can't even flash any kernel.
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culua said:
There's one time I manage to flash taimat sbc on sense the only problem it made graphic flickering so I restore back to stock kernel. The was it after that i can't even flash any kernel.
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That's your problem right there. Tiamat is an AOSP kernel and you're flashing in on a SENSE rom; its not gona work. If you want to you use Tiamat, you need to be on an AOSP rom, like CM7, Evervol, Salvage Mod, ect. For Sense, try the netarchy kernels.
Netarchy tried that too same problem.
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culua said:
Netarchy tried that too same problem.
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What rom are you using?
Stock sense
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are you using sbc or havs kernels when flashing?
culua said:
Stock sense
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Stock, as in like sprint lovers, or stock with root access?
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Stock sense with root
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Have you tried flashing a new rom? I believe you tried a factory reset already?
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Already factory reset.
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Did you try flashing a rom?
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Did you try flashing the stock rooted zip after wiping cache/dalvik/data?
Ok let me try flashing a tom cm7 then I'm going try flashing a kernel
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Nope still gives me bootloops. I'm just leave it as it is.
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Did you wipe dalvik and cache?
culua said:
Nope still gives me bootloops. I'm just leave it as it is.
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What recovery are you using? It sounds like something isn't getting properly wiped. When you flashed to a new rom, did you happen to try using Calkulin's Format all.zip? It certainly wouldn't hurt. Then get the new rom flashed and booted, then try wiping cache and dalvik cache again, then reflash your kernel. What kernel are you trying to use and on which rom? Perhaps the kernel has major undervolting and you're phone doesn't agree with it, which is not uncommon. There are options with netarchy kernels to use more, less, or no undervolting. With aosp kernels, there are some scripts you can use to change/alter the undervolting, to adjust it to where your phone is stable. So I guess that it's either because something isn't wiping properly, or because your phone doesn't like to be undervolted, or doesn't play nice with HAVS.

New kernal

I am on stock ff18 and I was just wondering if I could just replace the kernel to another without having any issues also if I flashed a new kernel would I still want to make a back up of everything?
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Yes. Use mobile Odin or Odin and flash agat63's kernel. Its safe to flash from ICS to ICS
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I have agats recovery is it still safe to flash from GB to ics?
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You mean ICS to ics. GB to ICS use stock el29 direct boot kernel. Easiest way.
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Does kernel get flashed if I return to stock?

I am going to use Odin to flash back to stock on my wife's phone as Skype doesn't work(static on other end) on any newer rom I have tried (flashed about ten last night.. Cm/AOKP./etc).
Do I need to find a stock kernel or will everything go back to stock if I flash a stock rom and do a factory reset?
Thanks,
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panoulil said:
I am going to use Odin to flash back to stock on my wife's phone as Skype doesn't work(static on other end) on any newer rom I have tried (flashed about ten last night.. Cm/AOKP./etc).
Do I need to find a stock kernel or will everything go back to stock if I flash a stock rom and do a factory reset?
Thanks,
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You don't need to flash kernel after flashing stock ROM with Odin.
Thanks so much.
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The kernel comes with any rom you download. If you want a different kernel, you flash the kernel of choice after you flash the rom.
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