I'd like to remove the trinity Kernel for JellyBean. I enjoy it's overclock but I hate it when my phone just randomly reboots. Is there a way to remove it. I have created a backup before I flashed it, but I'd like to remove it without having to restore to that backup.
Thanks
flash your rom without wiping, then flash gapps
ej8989 said:
flash your rom without wiping, then flash gapps
Click to expand...
Click to collapse
I should have mentioned, I'm running stock. No custom rom installed
Just flash a different custom kernel or the stock kernel. If you want a different custom kernel, and you want something stockish, you wan try SimpleKernel or thalamus kernel. As for the stock, I think you can find a flashable zip somewhere here in the NS forum.
hi, im looking for a stable kernel to overclock my nexus s 4g, i have rooted stock 4.1.1 JRO03R, any suggestions...and does flashing a new kernel wipe my apps and settings?
Most stable overclockable kernel I've tried so far is the matrix kernel. You can download the latest version (v24.5) in the official thread here.
If you already have an unlocked bootloader and custom recovery, you won't loose any apps or data as long as you don't wipe anything in recovery before flashing. Good luck!
apatal said:
Most stable overclockable kernel I've tried so far is the matrix kernel. You can download the latest version (v24.5) in the official thread here.
If you already have an unlocked bootloader and custom recovery, you won't loose any apps or data as long as you don't wipe anything in recovery before flashing. Good luck!
Click to expand...
Click to collapse
thanks for the suggestion...just downloaded the matrix kernel and air kernel...these 2 seems to be the most popular...will try them both to see which one perform batter...
Are there any negatives to flashing a custom kernel? I want to put the knock feature on my N5 and from what I understand it requires a custom kernel. Can I just flash it or do I have to wipe my data? Thanks.
Just flash it in recovery. Wipe is not needed. If you are worried you could make back up first. Stock kernel is also available aroud the forum.
However if you are talking about the knock which wakes up tje screen, it is very power consuming in my exp...
Sent from my Nexus 5 using Tapatalk
Not really any downside. I mean technically the custom kernels on here are experimental and they're always being updated, so you might run into bugs here and there, but if you can always reflash the stock kernel if you're unsatisfied with a custom kernel.
I'm currently on Cataclysm Rom + Franco Kernel. Wanna flash ElementalX kernel without losing data. How can i do it?
Vyshy92 said:
I'm currently on Cataclysm Rom + Franco Kernel. Wanna flash ElementalX kernel without losing data. How can i do it?
Click to expand...
Click to collapse
Just flash it. Don't do any wipes. You never lose data flashing a kernel.
Sent from my Nexus 9 using XDA Free mobile app
Am fairly sure that in the flash instructions of your chosen kernel it says to "dirty flash ROM" before flashing g kernel. Dirty flash won't or rather shouldn't wipe data. I've done it in past with no problems. Follow OP instructions and you'll be just fine and keep all your data.
Is it okay to flash a custom kernel on stock?
Im running stock 5.1 R3 with TWRP.
MushyMan said:
Is it okay to flash a custom kernel on stock?
Im running stock 5.1 R3 with TWRP.
Click to expand...
Click to collapse
So long as its a compatible one yes its fine. Look in the dev. Sections and look at op of some kernels. Will tell you what they work on and how to flash. As your on stock ROM remember to make a backup and find and download stock kernel as if you want to change between kernels you'll need to flash the stock version before you flash new kernel.
Good luck.
I am about to flash my nexus 5 device.
I was wondering.. if i unlock the bootloader and install a custom recovery plus create a backup.. that means ill have basicly a backup on my phone of a factory ROM and kernel right ?
So If i play around with custom roms and Kernels does that mean if I want to go back to stock kernel or/and ROM I can just recover my backup files from ,for example, CWM ?
And also if anyone here knows... how big difference can a kernel for battery life extension make ?
Then..
If I want to flash both.. Custom ROM and Kernel.. Rom comes first ? And if after that .. lets say I have flashed Cyanogenmod , and I have decided to change ROMs , Do I have to flash factory ROM ? Or I can just factory reset and Flash ir over the Cyanogenmod ?
For example.. for elementalX kernel I read this line... "You should only flash ElementalX over the kernel that came with your ROM!!!" I assume that means I do flash the ROM first... and what if I want to change Kernels later on? I re-flash the factory kernel ? And how do I do that?
For now that would be it
Thanks
Yes, installing a custom recovery (I recommend TWRP) allows you to create a backup of the existing ROM for restoration at a later point in time if you don't like the phone's existing ROM. Restoring TWRP backups have always worked except for me except in a couple of situations where I could not boot the restored ROM without first doing a factory wipe of the data and cache partitions.
I can't comment on custom kernels except to say that everyone uses their phone in different ways and getting the best battery life and performance may require a lot of tweaking. You could just try different kernels to see which one suits your needs.
You can restore the ROM's original kernel by extracting the kernel from the original ROM and flashing it. Alternatively, you could dirty flash the over the existing ROM. For example, if you are running CM12.1 2015-12-30 with a custom kernel and you want to go back to CM12.1 2015-12-30 without the custom kernel, you could just re-flash the entire CM12.1 2015-12-30 ROM again.
audit13 said:
Yes, installing a custom recovery (I recommend TWRP) allows you to create a backup of the existing ROM for restoration at a later point in time if you don't like the phone's existing ROM. Restoring TWRP backups have always worked except for me except in a couple of situations where I could not boot the restored ROM without first doing a factory wipe of the data and cache partitions.
I can't comment on custom kernels except to say that everyone uses their phone in different ways and getting the best battery life and performance may require a lot of tweaking. You could just try different kernels to see which one suits your needs.
You can restore the ROM's original kernel by extracting the kernel from the original ROM and flashing it. Alternatively, you could dirty flash the over the existing ROM. For example, if you are running CM12.1 2015-12-30 with a custom kernel and you want to go back to CM12.1 2015-12-30 without the custom kernel, you could just re-flash the entire CM12.1 2015-12-30 ROM again.
Click to expand...
Click to collapse
Thanks!
What advantages does TWRP has over CWM ? And also does it recover other files as well or just the system ones ?
And I guess its safer to just extract the original ROMs kernel.. Just how do i do that ?
TWRP is well supported and features a simple touch interface. TWRP will recover the system and data files.
Not necessarily safer to flash just the kernel rather than the entire ROM. It also saves time and effort because, if the kernel is not extracted and compiled for flashing in recovery, it could cause the phone to bootloop.
I've never extracted the kernel myself but this may help: https://www.youtube.com/watch?v=rLhprnOF6-U
audit13 said:
TWRP is well supported and features a simple touch interface. TWRP will recover the system and data files.
Not necessarily safer to flash just the kernel rather than the entire ROM. It also saves time and effort because, if the kernel is not extracted and compiled for flashing in recovery, it could cause the phone to bootloop.
I've never extracted the kernel myself but this may help:
Click to expand...
Click to collapse
Thanks!
So.. If, lets say, I flash cyanogenmod. Then Flash custom kernel. In order to change other kernel which is also custom , I should first flash the factory ROM which will have kernel on it ? And then reflash the ROM and then flash the new kernel ?
Im sorry , I also read a lot about this and somewhere on the way got really confused , haha.
Let's assume you flash CM version 1 and then you flash custom kernel "Kernel A". If you want to try another custom kernel named "Kernel B", you could just flash "Kernel B" over "Kernel A". If the developer of "Kernel B" cays it must be flashed over CM's original kernal, you could still flash "Kernel B" over "Kernel A" and hope it works. If it doesn't work, you could dirty flash CM version 1 over the existing ROM, then flash "Kernel B".
audit13 said:
Let's assume you flash CM version 1 and then you flash custom kernel "Kernel A". If you want to try another custom kernel named "Kernel B", you could just flash "Kernel B" over "Kernel A". If the developer of "Kernel B" cays it must be flashed over CM's original kernal, you could still flash "Kernel B" over "Kernel A" and hope it works. If it doesn't work, you could dirty flash CM version 1 over the existing ROM, then flash "Kernel B".
Click to expand...
Click to collapse
Thank you. Made things much clearer. Dirty flash means just flashing over the existing custom ROM and Kernel right?
And also.. What about if i have CM and Kernel B ... But i want to go change to ParanoidAndroid and still keep the Kernel B? This ROM would remove the Kernel and I would have to re flash ir right?
And also if I am just switching around ROMs only.. I can just flash them one over another? Perhaps a factory reset is healthy in between though.
Dirty flash means flashing over the existing ROM without wiping the system in recovery.
Flashing any ROM over an existing ROM will replace the system and kernel. If you want to change ROMs altogether, you'd flash PA and then flash Kernel B.
When changing ROMs, I always recommend a full wipe (i.e. system, data, cache).
audit13 said:
Dirty flash means flashing over the existing ROM without wiping the system in recovery.
Flashing any ROM over an existing ROM will replace the system and kernel. If you want to change ROMs altogether, you'd flash PA and then flash Kernel B.
When changing ROMs, I always recommend a full wipe (i.e. system, data, cache).
Click to expand...
Click to collapse
Alright. And just one last thing that I got a bit confused of..
When I root and install a custom ROM, I am not going to receive OTAs. If I just flash the newest custom ROM does that work as an update? Or the newest ROM can ble flashed over the newest android? If so... How do I exactly get the newest updates manually? I have to flash to factory ROM and then somehow flash the update? By far thats how I understood it.
rihz said:
Alright. And just one last thing that I got a bit confused of..
When I root and install a custom ROM, I am not going to receive OTAs. If I just flash the newest custom ROM does that work as an update? Or the newest ROM can ble flashed over the newest android? If so... How do I exactly get the newest updates manually? I have to flash to factory ROM and then somehow flash the update? By far thats how I understood it.
Click to expand...
Click to collapse
Depends on which rom, but updates to custom roms generally can just be flashed over. Not sure of the MM jump, but from KK to LP, it worked fine so far. Whatever you do read the instructions of the rom and kernel builders. You get lucky sometimes and can dirty flash things that should not be dirty flashed, but if there are issues, there are instructions on the rom or kernel page how to start again.
If you are factory modified and want a factory image you need to flash in fastboot. If on a custom rom, well, like I said follow their advice. Make sure to backup with recovery and save on computer before doing anything.
wangdaning said:
Depends on which rom, but updates to custom roms generally can just be flashed over. Not sure of the MM jump, but from KK to LP, it worked fine so far. Whatever you do read the instructions of the rom and kernel builders. You get lucky sometimes and can dirty flash things that should not be dirty flashed, but if there are issues, there are instructions on the rom or kernel page how to start again.
If you are factory modified and want a factory image you need to flash in fastboot. If on a custom rom, well, like I said follow their advice. Make sure to backup with recovery and save on computer before doing anything.
Click to expand...
Click to collapse
Okay, thanks!
And Happy New year to you all!