Develop Bugs

[Q] Custom ROM and 4.0.4 question

I updated to 4.0.4 last weekend with the leak. I now want to flash GummyNex to my Nexus. Must I flash back to 4.0.2 before I load GummyNex or any other custom ROM? Or can I just flash the custom ROM on top of the 4.0.4 update?

No just wipe data, dalvik, cache and flash the ROM you want to flash with gapps (if required) and kernel (if you desire to)

Thanks! I appreciate it. I've never flashed a custom ROM...just the unofficial OTA's. The kernel is a totally separate file correct?

CuppaCoffee8 said:
Thanks! I appreciate it. I've never flashed a custom ROM...just the unofficial OTA's. The kernel is a totally separate file correct?
Click to expand...
Click to collapse
Yes, you can flash kernel after flashing the custom rom, but keep in mind that some kernels only work for a specified build.

CuppaCoffee8 said:
Thanks! I appreciate it. I've never flashed a custom ROM...just the unofficial OTA's. The kernel is a totally separate file correct?
Click to expand...
Click to collapse
Yes kernel is a separate file. Some ROMs will include a kernel with their ROM (mostly stock kernel but it could be different).
So if you flash a ROM (or a update), flash the kernel update again because flashing the ROM zip will override your kernel.
Press the thanks button if I helped, thanks

Arc S Stock Rom and Doomkernal

Hi I want to use the stock rom but doom kernal doe overclokcing and was wondering how I would do this as everytime I install the stock rom it overwirtes the kernal.

First flash the rom via flashtool and then doomkernal via fastboot. The stock roms contains the stock kernal so you have to flash therom first

andoridkiller said:
Hi I want to use the stock rom but doom kernal doe overclokcing and was wondering how I would do this as everytime I install the stock rom it overwirtes the kernal.
Click to expand...
Click to collapse
Flash the rom first.
Then flash doomkernel.
Then flash doomkernel's wifi modules (to enable wifi option)

thanks peeps

Is a custom kernel necessary for a custom rom?

Hopefully my title didn't confuse anyone lol.
I was told the main reason for flashing a custom kernel is entering recovery mode, well if that's the case, I have an app called x-parts, it allows me to boot my xperia play in recovery mode without flashing a custom kernel. so....would I be able to flash a custom rom via x-parts WITHOUT having to flash a kernel?
IM HAVING THE HARDEST TIME TRYING TO GET CM7/CM9 ON MY PHONE, ANY HELP WOULD BE APPRECIATED!

Xperia Player said:
Hopefully my title didn't confuse anyone lol.
I was told the main reason for flashing a custom kernel is entering recovery mode, well if that's the case, I have an app called x-parts, it allows me to boot my xperia play in recovery mode without flashing a custom kernel. so....would I be able to flash a custom rom via x-parts WITHOUT having to flash a kernel?
IM HAVING THE HARDEST TIME TRYING TO GET CM7/CM9 ON MY PHONE, ANY HELP WOULD BE APPRECIATED!
Click to expand...
Click to collapse
I'm pretty sure you can use the same kernel for a CM7 ROM since stock and CM7 are the same Android version, basically.
However, to use an ICS based ROM, flashing a custom kernel is necessary.

Solar.Plexus said:
I'm pretty sure you can use the same kernel for a CM7 ROM since stock and CM7 are the same Android version, basically.
However, to use an ICS based ROM, flashing a custom kernel is necessary.
Click to expand...
Click to collapse
It means that i can flash CM7 on stock???? Without flash a custom kernel??? If that is true then CM7 works on locked bootloader....

No. You must have a custom kernel for a custom ROM. Any ROMs that can be flashed on locked bootloader will say so explicitly. CM7 is not one of those.

Thanks for the info guys just curious to see how kernels tried into roms

Trouble going back to JB from kitkat

Hi,
I'm having trouble getting back from a KitKat Rom to an JB or ICS ROM.
I'm getting stuck with the firmware. It's flashing OK (I've tried several different ones), but when I boot up and try to get into CWM it just sits there on the firmware logo (e.g. the LUPUS logo, or the Rush logo).
Is there something fundamentally stopping me going back to an ICS or JB firmware, after I've previously had KitKat running?
HELP

Oh, this is the Kitkat ROM I originally installed, and it's included kernel:
http://forum.xda-developers.com/showthread.php?t=2570072
If I flash that kernel again, I can get into Kitkat successfully, no problem at all.
As above, if I flash any other kernel, I just can't get into CWM.

gsf600y said:
Hi,
I'm having trouble getting back from a KitKat Rom to an JB or ICS ROM.
I'm getting stuck with the firmware. It's flashing OK (I've tried several different ones), but when I boot up and try to get into CWM it just sits there on the firmware logo (e.g. the LUPUS logo, or the Rush logo).
Is there something fundamentally stopping me going back to an ICS or JB firmware, after I've previously had KitKat running?
HELP
Click to expand...
Click to collapse
You can flash stock ICS firmware using Flashtool, then flash a JB custom kernel with a recovery. From there, use the recovery to flash a JB ROM.
僕のLT18iから送られてきた

popthosegaskets said:
You can flash stock ICS firmware using Flashtool, then flash a JB custom kernel with a recovery. From there, use the recovery to flash a JB ROM.
Click to expand...
Click to collapse
Thanks for your reply.
What is the need for flashing an ICS kernel first?
I'll give it a go, but flashing a custom ICS kernel with a recovery I've been unable to get into CWM.
I'm probably doing something really stupid.

gsf600y said:
Thanks for your reply.
What is the need for flashing an ICS kernel first?
I'll give it a go, but flashing a custom ICS kernel with a recovery I've been unable to get into CWM.
I'm probably doing something really stupid.
Click to expand...
Click to collapse
Flashing ICS is recommended first since this will restore you phone's memory partitions. KK uses different memory partitions to make it run properly. This will also wipe your phone's data and allows you to do a clean install that should eliminate most errors that you encounter during ROM installation.

Ok, thanks so much for the advice
I'll give it a go and let you know how I get on!

Ok, I'm back on Gingerbread stock firmware
Android v2.3.4, Build 4.0.2.A.0.62.
I can't find an ICS based FTF file - everything is either 404 or on hotfiles, which is dead.
I've unlocked the bootloader (which I thought I'd already done, but maybe the flash of the firmware undoes that?)
Not sure where to go from here.

gsf600y said:
Ok, I'm back on Gingerbread stock firmware
Android v2.3.4, Build 4.0.2.A.0.62.
I can't find an ICS based FTF file - everything is either 404 or on hotfiles, which is dead.
I've unlocked the bootloader (which I thought I'd already done, but maybe the flash of the firmware undoes that?)
Not sure where to go from here.
Click to expand...
Click to collapse
Check my signature for stock firmwares, there are working links for Arc and Arc S.

Someguyfromhell said:
Check my signature for stock firmwares, there are working links for Arc and Arc S.
Click to expand...
Click to collapse
BOOKMARKING THAT!!
Very useful thanks a lot
Currently firing up FreeXperia CM9....fingers crossed.....

Re-Flash Xperia M to stock

Hey everyone,
last week I flashed my girlfriend's XMS with several custom ROMs, but none of them could really satisfy us, so I want to re-flash the stock ROM.
My question is: Can I just flash the ftf file with the flashtool if there is currently CM11 running on the device? Or do I need to erase the system before?
Will this also flash "stock recovery"? Is there a way to do this?
Thanks!

Yes, you can flash stock ROM. There is no need to format system, Flashtool will do its work. Stock recovery will not be flashed, because we don't have stock recovery on our device. But you can flash stock kernel with CWM or PhilZ Touch recovery.

if you want to leave your recovery ..check kernel
sin in exclude list in flashtool
Sent from my C1905 using XDA Premium 4 mobile app

Farsiris said:
if you want to leave your recovery ..check kernel
sin in exclude list in flashtool
Click to expand...
Click to collapse
No! Phone will not boot with custom ROM kernel (if custom ROM is not based on stock). So it is necessary to flash full stock at first and then to flash stock kernel with recovery, if you want to have recocery.

cucumber09 said:
No! Phone will not boot with custom ROM kernel (if custom ROM is not based on stock). So it is necessary to flash full stock at first and then to flash stock kernel with recovery, if you want to have recocery.
Click to expand...
Click to collapse
Have you tried it ? Cuz i ve tried it many many times !

Farsiris said:
Have you tried it ? Cuz i ve tried it many many times !
Click to expand...
Click to collapse
You flashed stock via Flashtool after CM11 or CM-based ROM without flashing stock kernel? It should not boot, I think, because 4.3 and 4.4 kernels are different.

Has anyone tried this? I need to do this also but I'm a little bit confused about flashing kernel. I tried to find a detailed guide somewhere but no success