Removing a Kernel - EVO 4G Q&A, Help & Troubleshooting

I have a quick question I cant seem to find the answer too. How do you remove a Kernel that you flashed to your phone?
and do I have to Wipe Cache, Dalvich or anything like that?
Thanks

Not exactly sure what you are asking, but here it goes!
If you flashed a custom kernel, and want to revert back to the previous kernel you had you could:
1. NAND restore to the backup you should have applied before flashing the new kernel
-or-
2. Download and flash the kernel of your choice to replace the current kernel.
You cannot "remove" a kernel that has been applied to your device, only replace.

Thanks for that info. I just need to replace the one I have so I will find what I want then just flash over it.
Someone said you could use Rom Manager and choose stock kernel but I didnt see that in my unpaid version..

Globetrahter said:
I have a quick question I cant seem to find the answer too. How do you remove a Kernel that you flashed to your phone?
and do I have to Wipe Cache, Dalvich or anything like that?
Thanks
Click to expand...
Click to collapse
if you dont have the original kernel you also can wipe cache and dalvik twice each one and then flash your rom again

Related

Flashing Rom add-ons?

I just rooted my phone yesterday and flashed warm z 2.2 rom and i want to flash a few of the add-ons. Do i just go into recovery and install from zip? Do i need to clear anything before i do this? this topic has been discussed before but im still unclear on exactly what i do. thanks.
You don't always need to wipe, but yeah, most stuff you flash in recovery. I usually wipe Cache and Dalvik before flashing anything, no matter what it is just to be safe. You shouldn't have to wipe anything other than that.
If you let me know the specific mods, I can double check for you.
Edit: Welcome! Excellent 1st ROM selection.
Yea im just trying to get the "recent apps in notification bar" and the "Hulu" add ons. thanks again for the help.
Yeah, you flash those, although I can't find the recent apps mod, I'm sure it is a flashable zip.
Also, someone the other day had trouble with the hulu zip. If you do, let me know and I can direct you to how to manually install Hulu.
ok im waiting on my battery to charge so i can flash the "recent apps in dropdown menu" add-on to my rom. Just to be 100% clear, i can just go into recovery and hit install from zip and choose the file? Is it best to clear the cache & dalvik cache before hand or does it matter? and if i do clear them will it erase any of my apps/files? Sorry, im really new to this stuff and im trying to learn as i go.
jphipps187 said:
ok im waiting on my battery to charge so i can flash the "recent apps in dropdown menu" add-on to my rom. Just to be 100% clear, i can just go into recovery and hit install from zip and choose the file? Is it best to clear the cache & dalvik cache before hand or does it matter? and if i do clear them will it erase any of my apps/files? Sorry, im really new to this stuff and im trying to learn as i go.
Click to expand...
Click to collapse
Its best to wipe the cache and dalvik before flashing anything in recovery. And it won't delete you apps, ect. Think of it like cleaning your internet cache on your browser. And yes, after the wipe, click install zip, and then choose zip. If you flash multiple things, wipe then flash again.
Ex: wipe cach/dalvik, flash thing one, go back, wipe cache/dalvik. flash thing 2, ect. Then reboot when done.
ok thanks a lot for the help.
jphipps187 said:
ok thanks a lot for the help.
Click to expand...
Click to collapse
No problem.
jphipps187 said:
I just rooted my phone yesterday and flashed warm z 2.2 rom and i want to flash a few of the add-ons. Do i just go into recovery and install from zip? Do i need to clear anything before i do this? this topic has been discussed before but im still unclear on exactly what i do. thanks.
Click to expand...
Click to collapse
I know I wasn't a part of this conversation but I used it to educate myself all the same, I would hit the thanks button if I could find it. Sorry, I'm new to this...
Are you using CWM to flash? I'm new to this as well and I don't think I'll be able to wipe cache without doing a full wipe with it.
chocolate8175 said:
I know I wasn't a part of this conversation but I used it to educate myself all the same, I would hit the thanks button if I could find it. Sorry, I'm new to this...
Click to expand...
Click to collapse
If your on a PC it's to the Left if your using the latest version of XDA. If your on the App tap the screen, you'll see the option.
victorvjr said:
Are you using CWM to flash? I'm new to this as well and I don't think I'll be able to wipe cache without doing a full wipe with it.
Click to expand...
Click to collapse
You can use CWM Recovery to Flash. Or there are several other Recoveries out there. Amon_Ra v2.3 , or SmelkusMod.
Want to flash add ons after flashing revolution os
I flashed my Samsung galaxy smj700f 2016 with revolution os and I wanted to flash bixby which is provided on a zip file of add one but it contains several other files which I don't want
How do I flash bixby only

[Q] How to update your ROM.

Hello guys, I would like to know how to update my ROM using dalvik cache? I have Foxhound ROM 0.3 and i would like to install the 0.4. Can anyone help me ?
Hi Mate
You don't update using the Dalvik Cache. The Dalvik Cache is just something that is best to clear before an update.
In order to flash a new ROM there are a few things you need to have set up on your computer and phone and they are well detailed here:
http://forum.xda-developers.com/showthread.php?t=1392310
Read the above thread and find out what has already been done. I think your phone will be Bootloader Unlocked and Rooted already. If so flash the latest Clockwork Recovery Mod CWM and then just download the ROM you want and store it on your phone. Once done you will be able to use the above link to easily write it to your phone using CRM and the Flash Update from SD Card Option.
Hope this helps.
jamesmcuk said:
Hi Mate
You don't update using the Dalvik Cache. The Dalvik Cache is just something that is best to clear before an update.
In order to flash a new ROM there are a few things you need to have set up on your computer and phone and they are well detailed here:
http://forum.xda-developers.com/showthread.php?t=1392310
Read the above thread and find out what has already been done. I think your phone will be Bootloader Unlocked and Rooted already. If so flash the latest Clockwork Recovery Mod CWM and then just download the ROM you want and store it on your phone. Once done you will be able to use the above link to easily write it to your phone using CRM and the Flash Update from SD Card Option.
Hope this helps.
Click to expand...
Click to collapse
Ummm. he doesn't have to read that thread..
Just simply download the ROM
Put it on your phone's storage
Boot into CWR
Wipe Dalvik and Cache
Flash ROM
[OPTIONAL] Flash Kernel (if you used one a custom kernel)
zephiK said:
Ummm. he doesn't have to read that thread..
Just simply download the ROM
Put it on your phone's storage
Boot into CWR
Wipe Dalvik and Cache
Flash ROM
[OPTIONAL] Flash Kernel (if you used one a custom kernel)
Click to expand...
Click to collapse
If you flash another rom, will your apps be wiped as well? And if you flash an update from the same rom? Just back-up with Titanium or? Thanks.
danielvc said:
If you flash another rom, will your apps be wiped as well? And if you flash an update from the same rom? Just back-up with Titanium or? Thanks.
Click to expand...
Click to collapse
Apps are never wiped unless you wipe data/factory. Yes use titanium
Sent from my Galaxy Nexus using xda premium

[Q] Custom Roms / Kernel Questions

I have a AT&T Samsung Galaxy S3 (SGH-1747) that is running stock with root.
I have rooted my phone using the samsung toolkit located here: http://forum.xda-developers.com/showthread.php?t=1746665
Since that toolkit flashed a CWM Based recovery I have installed ROM Manager and flashed CWM Recovery version 6.0.1.2
My questions are..
- with my current setup.. am I technically running the "Stock" samsung kernel?
- why would you want to flash a different kernel to your phone?
- and is it necessary to flash a different kernel in order to use certain custom roms?
- At first I was leaning towards flashing CM10 nightly but the more I look at it.. I want to flash PARANOIDANDROID 2.22 http://forum.xda-developers.com/showthread.php?t=1818199
Is this rom fully compatible with my AT&T phone? and since i'm running stock with root, do I need to do anything special before flashing this rom? Factory reset? Wipe Data? I've already made a full nandroid backup.
Thank you!
- with my current setup.. am I technically running the "Stock" samsung kernel? I believe so
- why would you want to flash a different kernel to your phone? Different kernels do different things.. some have better batter life.. some let you OC and UC..
- and is it necessary to flash a different kernel in order to use certain custom roms?Well sometimes.. Well technically.. most kernels will work with most of the ROMS out there.. as long as you stay withing your phones threads.. But some ROMs have a kernal with them.. and some ROMS you need to flash your own kernel..
Diamond22 said:
- with my current setup.. am I technically running the "Stock" samsung kernel? I believe so
- why would you want to flash a different kernel to your phone? Different kernels do different things.. some have better batter life.. some let you OC and UC..
- and is it necessary to flash a different kernel in order to use certain custom roms?Well sometimes.. Well technically.. most kernels will work with most of the ROMS out there.. as long as you stay withing your phones threads.. But some ROMs have a kernal with them.. and some ROMS you need to flash your own kernel..
Click to expand...
Click to collapse
Thank you for the reply.
On the rom i'm wanting to flash for my SGH-i747 http://forum.xda-developers.com/showthread.php?t=1818199
The steps for flashing are as follows:
CWM: Install Zip: Rom: Download Here Make sure the file you download is PA-2.22-d2att.zip
CWM: Install Zip: Gapps: Download (These are the new ones)
CWM: Wipe Data/Factory Reset
CWM: Advanced/Wipe Dalvik Cache
Reboot and edit your Apps Dpi & Layout under Settings/Paranoid Settings - DO NOT RESTORE YOUR OLD PROPERTIES FOR NOW
Would i need to wipe data, factory reset, then also wipe dalvik cache BEFORE I install the rom and gapps since i'm running stock with root?
Thank you
i'm also reading that for paranoidandroid you must first flash CM10 then flash paranoid.. is this accurate?
umm.. not sure where you saw that you need to flash a CM rom before flashing the paranoid ROM..
I believe the Paranoid rom is based off CM
The instruction on the link you have, in my opinion, is wrong..
The way that i flash my roms is...
Wipe data/factory reset..
Wipe Cache
Wipe Dalvik
Format/Data
Fomat/System ( i think deletes backups) only do in emergency.aka optional step
Flash ROM
Flash Gapps.
THATS IT
Some people will wipe cache afer flashing a rom..
But if you wipe data/factory reset i believe deletes the ROM...
Diamond22 said:
umm.. not sure where you saw that you need to flash a CM rom before flashing the paranoid ROM..
I believe the Paranoid rom is based off CM
The instruction on the link you have, in my opinion, is wrong..
The way that i flash my roms is...
Wipe data/factory reset..
Wipe Cache
Wipe Dalvik
Format/Data
Fomat/System ( i think deletes backups) only do in emergency.aka optional step
Flash ROM
Flash Gapps.
THATS IT
Some people will wipe cache afer flashing a rom..
But if you wipe data/factory reset i believe deletes the ROM...
Click to expand...
Click to collapse
If you are already running CM10 then you don't need to wipe Cache. Just dalvik and data. Im pretty sure thats what was confusing, since this is based off of CM10.
DarthDerron said:
If you are already running CM10 then you don't need to wipe Cache. Just dalvik and data. Im pretty sure thats what was confusing, since this is based off of CM10.
Click to expand...
Click to collapse
yeah, I just keep reading and reading.. probably making this out to be more difficult than it really is just don't want to end up with a brick or anything.
I'm already on stock + root + latest CWM so I just need to put the files on my phone and flash but I believe these are the steps i need to take:
1- Download ROM and Gapps to internal sd card
2- Boot phone into recovery
3- WIPE Cache/Delvik/Data factory reset> Mounts and Storage- format system
4- Flash ROM and Gapps

[Q] [Arc S] Installing any JB - same problem

I have a problem with the installation of JB. No matter what ROM I install, after boot, when home screen appear, my touch screen does not respond. I've tried a lot of roms and a lot of kernels. I have unlocked BL. In stock rom I have no problems.
What could be causing this? Should I format system before installing rom via recovery or just wipe data, cache and dalvik? When I should flash kernel? Before/after installing rom? I care about CM10. Plz help.
P.S. sorry for my english
saymonek said:
I have a problem with the installation of JB. No matter what ROM I install, after boot, when home screen appear, my touch screen does not respond. I've tried a lot of roms and a lot of kernels. I have unlocked BL. In stock rom I have no problems.
What could be causing this? Should I format system before installing rom via recovery or just wipe data, cache and dalvik? When I should flash kernel? Before/after installing rom? I care about CM10. Plz help.
P.S. sorry for my english
Click to expand...
Click to collapse
I have Neo,and this is how i'm installing it: first wipe everything (data,wipe cache and Dalvik cache),flash the rom,and then flash the kernel.
georgeiulian89 said:
I have Neo,and this is how i'm installing it: first wipe everything (data,wipe cache and Dalvik cache),flash the rom,and then flash the kernel.
Click to expand...
Click to collapse
I've tried to do that way but but not succeed
Certain ROMs require phone-specific patch, make sure you install it!
Other ROMs have different downloads for different phones, make sure to download correct one!
If you install wrong phone ROM, touch dies.
All question threads belong here in Q&A so please post in the correct sections going forward.
Thanks
AvRS
saymonek said:
I have a problem with the installation of JB. No matter what ROM I install, after boot, when home screen appear, my touch screen does not respond. I've tried a lot of roms and a lot of kernels. I have unlocked BL. In stock rom I have no problems.
What could be causing this? Should I format system before installing rom via recovery or just wipe data, cache and dalvik? When I should flash kernel? Before/after installing rom? I care about CM10. Plz help.
P.S. sorry for my english
Click to expand...
Click to collapse
The problem is caused by the kernal. You MUST have JB kernel to flash any JB ROM. Generally, for each ROM you will find the recommended kernel and the required steps. Do exactly like posted by OP.
As an example, see here: http://forum.xda-developers.com/showthread.php?t=1979829
You can make an idea on the steps to follow.
okty2k said:
The problem is caused by the kernal. You MUST have JB kernel to flash any JB ROM. Generally, for each ROM you will find the recommended kernel and the required steps. Do exactly like posted by OP.
As an example, see here: http://forum.xda-developers.com/showthread.php?t=1979829
You can make an idea on the steps to follow.
Click to expand...
Click to collapse
Ok, so now I have installed Xperia T rom (7.0.A.3.195 v6.0 for ARC/ARC-S). Should I flash V77 baseband, then flash kernel from CM10 FXP150 pack via fastboot, make a wipe (data, cache, dalvik) then install ROM via Recovery, and then install GAPPS and it should work? This is what i'm gonna do, so if I'm wrong please tell me.
EDIT:
(edited in case someone had same problem)
I found the solution:
I had to flash BB 72 and libs, then flash ROM+GAPPS and libs once again, then everything works awesome. (edited in case someone had same problem)
saymonek said:
(edited in case someone had same problem)
I found the solution:
I had to flash BB 72 and libs, then flash ROM+GAPPS and libs once again, then everything works awesome. (edited in case someone had same problem)
Click to expand...
Click to collapse
I'd got a touch screen problem.
Could you please tell me that how can i flash 'libs once again' So, I can try on my Arc.
Thank you very much.

[Q] How do you flash back to a previous nightly?

How do you flash back to a previous nightly? What are the steps I know I have to make sure I have the nightly I want to flash to on my SD card, but before I can do that what caches do I need to wipe?
Current: D2att cyangogen nightly12/28/12
to --> nightly12/27/12
khep24 said:
How do you flash back to a previous nightly? What are the steps I know I have to make sure I have the nightly I want to flash to on my SD card, but before I can do that what caches do I need to wipe?
Current: D2att cyangogen nightly12/28/12
to --> nightly12/27/12
Click to expand...
Click to collapse
Wipe cache and dalvik. If you have any problems that weren't there before a full wipe might be needed.
Also for future reference you should use a more descriptive title when posting questions.
Not sure what you mean by flash to a previously nightly, I am guessing you would like to restore your phone to a previous backup?
If so you need to use something like ROM manager and grant superuser permissions to it. From there you can create backups and restore points from your custom ROM`s. You can either restore from inside the phone or from CWM recovery mode.
Personally for me everytime I flash a new ROM on my phone I hop into CWM recovery and do a factory wipe and reset, wipe cache, and then go to advanced and wipe dalvik.
If I have been messing around with the same Custom ROM, changing widgets, apps etc, I back up using ROM Manager and just restore back to something if I don`t like the changes I have made.
Hope that helps.
jefferson9 said:
Wipe cache and dalvik. If you have any problems that weren't there before a full wipe might be needed.
Also for future reference you should use a more descriptive title when posting questions.
Click to expand...
Click to collapse
Thank you very much, and will do I'm pretty new to this I'm just trying to figure out all the correct steps so I won't brick.

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