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Hey guys!
I might be getting a Galaxy S 2 for christmas, and i have a few questions regarding ROM flashing and related things.
On the Hero, you would flash a recovery and use that to flash everything else, ROMs, kernels, the load of it. In other words, recovery is completely independent from the ROM and kernel.
I've been looking around the developer forums here, and I'm slightly confused on how this works on the SGS2. I see a lot of kernels have CWM as a feature. Is it built in to the kernel somehow? Or is the kernel required to support it?
Lets say i want to flash a new kernel. Do i have to use this "Odin" program to do that, or can it be done in CWM as long as the kernel supports the version of CWM im using?
I'm also seeing a lot of ROMs that can/have to be flashed through Odin. Is this the preferred method over using recovery on the SGS2, or is it just a matter of personal preference?
The last thing that's been bugging me, is that if i buy my phone in Singapore (I live in Norway, but I'm going away for the holidays), will this have any ramifications for what ROMs i can use? I'll make sure not to get the G version of course, but apart from that, are there any regional limitations I should be aware of? (Something about CSCs?)
Thanks in advance!
You can root via Odin by just flashing CF Root, this is a stock kernel with CWM and other little things injected into it.
Once rooted you'll have CWM, reboot into recovery and flash away, custom roms are usually CWM, stock roms you'll need Odin or even Mobile Odin can do this.
Kernels again most devs release a tar for odin and a package for CWM so not an issue. Nearly all custom kernels have CWM and I've personally had no issues going from one version to the other.
Modem same, odin version and there's a big thread for CWM versions.
It's pretty similar.
Flashing a rom won't have any significance to where about in the world you are as the I9100 is an international version.
Modems can vary between countries as in signal strength and such but shouldn't be an issue with KI3, KI4, KI1, new KL1 being the most used.
CSCs are not an issue as well, you can change it via Odin, I just use a UK one but at times just settle with whatever comes with the rom, it's easy to change to your preferred country but should have no negative affect wherever in the world you are.
do i need to manually update the baseband of my phone? or each kernel/ROM has differrent baseband? help me plz
if a different baseband is required for a certain rom then this will usually be posted on the first page..
just check requirements of the custom rom first.
custom kernels - official ftfs
i just wanted to know if there're any risks of flashing ftfs while using a custom kernel. for example, i installed a custom kernel (Rage something) which only supports stock ROMs. i have a LWW which had .62 baseband. i downgraded it to .42 for rooting and all that. now, will my phone get bricked or something if i flash a different ftf, official or otherwise? (for instance, like the one in this thread: http://forum.xda-developers.com/showthread.php?t=1605150) the thread has .70 baseband, but as far as i know, latest officially released by SE is .62, so is this a custom one? also, how do i root .62? i have already unlocked the bootloader.
also, if it's not too much trouble, can u pls explain the architecture? as far as i can understand, Kernel and ROM are parts of the OS, rite? so what's the baseband (firmware), considering these are all software components?
just checked the link that you have posted. this is the ported official ICS rom.
that rom has its own kernel.
flashing it to your current kernel would brick the phone.
also there will be big differences because you currently have GB (Gingerbread).
baseband is the radio firmware, that is for the phone signal. this will be region dependent.
so, the baseband is the ftf thing, rite? but ppl were saying that .58 (in LWW) had some bugs like repeated rebooting of the phone, and that .62 fixed this bug and also improves battery life.
also, i repeatedly flashed many kernels into my phone. i mean, every time i tried a new ROM, i had to install the kernel provided with it (like FXP 115, or the one provided with the rom, the boot.img), over the already existing kernel, but i had no problems. so when does the risk of bricking come into play? i couldnt really understand what u meant by, "that rom has its own kernel. flashing it to your current kernel would brick the phone."
and yeah, i tried some ICS roms, like these:
http://forum.xda-developers.com/showthread.php?t=1434001
http://forum.xda-developers.com/showthread.php?t=1445821 (FXP 115)
CM 7.2 RC0 coconut
each had its own problems, so i reverted back to stock. but gotta admit, the CM9 android 4.0 UI was really awesome compared to GB
when i was using .58fw, did not encounter the automatic restart.
never noticed that much difference also after upgrading to .62
this is the build or sw version of the rom.
the baseband is independent from this build of the rom.
you are doing it correctly, flashing the required kernel for each rom.
if you would just flash new rom over any kernel would result to bootloops.
bricking is really minimal and there are still ways to fix it,
it is rare that changing roms and kernel causes permanent brick unless there was already a hardware problem to begin with.
im also checked this roms but haven't installed them yet.
will stick with hybrom for now,
I have a Galaxy S2 GT-I9100G (bought in China 2 years ago).
In the past I have changed it's rom to SuperROM#v1.1 found here : http://forum.xda-developers.com/showthread.php?t=1374135.
The current Android version is 2.3.6 (oldddd )
Kernel version is : 2.6.35.7
Baseband version : I9100GZCKI1
I also have CWM-based Recovery v5.0.2.6 for GS2.
I would really like to upgrade to JellyBean.
I have seen a couple of versions here:
* http://www.ibtimes.co.uk/articles/4...100g-android422-jellybean-aokp-mr1-build6.htm
* http://www.ibtimes.co.uk/articles/4...-android422-jellybean-vanilla-rootbox-rom.htm
* http://www.ibtimes.co.uk/articles/4...droid422-jellybean-update-slimbean-build5.htm
and of course all the ROMs here on the site (too much to choose from !)
My question is : can my *Chinese* device be upgraded to JellyBean ?
If so - I have read on some forum threads that I need to somehow get the stock roms first, but I have no idea where to get them for the Chinese device.
Any help would be very much appreciated...
S2User said:
I have a Galaxy S2 GT-I9100G (bought in China 2 years ago).
In the past I have changed it's rom to SuperROM#v1.1 found here : http://forum.xda-developers.com/showthread.php?t=1374135.
The current Android version is 2.3.6 (oldddd )
Kernel version is : 2.6.35.7
Baseband version : I9100GZCKI1
I also have CWM-based Recovery v5.0.2.6 for GS2.
I would really like to upgrade to JellyBean.
I have seen a couple of versions here:
* http://www.ibtimes.co.uk/articles/4...100g-android422-jellybean-aokp-mr1-build6.htm
* http://www.ibtimes.co.uk/articles/4...-android422-jellybean-vanilla-rootbox-rom.htm
* http://www.ibtimes.co.uk/articles/4...droid422-jellybean-update-slimbean-build5.htm
and of course all the ROMs here on the site (too much to choose from !)
My question is : can my *Chinese* device be upgraded to JellyBean ?
If so - I have read on some forum threads that I need to somehow get the stock roms first, but I have no idea where to get them for the Chinese device.
Any help would be very much appreciated...
Click to expand...
Click to collapse
officially yes, unofficially(none samsung) yes
official:
take a look at this: http://forum.xda-developers.com/showthread.php?t=2171269 (thanks to hacbaoklhh for posting this thread)
unofficial (none samsung)
first you need to do the official thing (so you can get the ics/jb boatloader in), if you wish to stick with the official then you're done, no need to continue.
then you need to do this: http://forum.xda-developers.com/showthread.php?t=2113545 flash via stock recovery (thanks to Ryuinferno for his great work)
then you can flash whatever rom you want (AOSP, AOKP, MIUI)
to revert back to original:
take a look at this: http://forum.xda-developers.com/showthread.php?t=1916623 (thanks to Harchaoui for his hard work) or you can do the official thing again via odin, end of story
but i wouldnt revert back to chinese stock rom, we have the best developers and our 4.2.2 has become so stable
good luck
xtachix said:
officially yes, unofficially(none samsung) yes
official:
take a look at this: http://forum.xda-developers.com/showthread.php?t=2171269 (thanks to hacbaoklhh for posting this thread)
unofficial (none samsung)
first you need to do the official thing (so you can get the ics/jb boatloader in), if you wish to stick with the official then you're done, no need to continue.
then you need to do this: http://forum.xda-developers.com/showthread.php?t=2113545 flash via stock recovery (thanks to Ryuinferno for his great work)
then you can flash whatever rom you want (AOSP, AOKP, MIUI)
to revert back to original:
take a look at this: http://forum.xda-developers.com/showthread.php?t=1916623 (thanks to Harchaoui for his hard work) or you can do the official thing again via odin, end of story
but i wouldnt revert back to chinese stock rom, we have the best developers and our 4.2.2 has become so stable
good luck
Click to expand...
Click to collapse
Wow, that was fast !
Thanks so much for the response.
I have 3 questions if you could answer:
1. In your first link it says "Instructions For Flashing ICS:".
Does it mean that is will flash ICS or that I need to have ICS to flash it ?
because I don't have ICS... I have Gingerbread ...
2. Does the process in both your links change the Kernel or the Rom ?
(I managed to forget all this stuff since I last did this 2 years ago)
3. Which ROM would you recommend to use ? (out of the AOPS, AOKS and MIUI)
Thanks !
S2User said:
Wow, that was fast !
Thanks so much for the response.
I have 3 questions if you could answer:
1. In your first link it says "Instructions For Flashing ICS:".
Does it mean that is will flash ICS or that I need to have ICS to flash it ?
because I don't have ICS... I have Gingerbread ...
2. Does the process in both your links change the Kernel or the Rom ?
(I managed to forget all this stuff since I last did this 2 years ago)
3. Which ROM would you recommend to use ? (out of the AOPS, AOKS and MIUI)
Thanks !
Click to expand...
Click to collapse
1. its ok, that's probably just a typo, the android version there is 4.1.2. should state JB. via odin you can flash that and you will have official JB
flashing via odin doesnt care which version of android you currently have
2. the process of the first link will basically put a whole new kernel and rom in your system. you will have official JB kernel from samsung along with official rom from samsung. your version will be 4.1.2. (this is required to get the ics/jb bootloader which you dont have)
the purpose of the second link is to change the kernel so that it has cwm or twrp recovery integrated in. this will allow you to flash mods and roms and all that. but it is not necisary if you are not willing to use AOSP AOKP MIUI. if you'd like to stick with the official and see how it performs then you don't have to do the second link
3. personally i think the simpler the better, i use CM10.1 (CyanogenMod 10.1) <----- thanks to codworkerx, i also like Thinking Bridge http://forum.xda-developers.com/showthread.php?t=2199527 (thanks to Black_Prince for his great work)
couple any of those roms with http://forum.xda-developers.com/showthread.php?t=2251840 kernel (thanks to biagio7xD) and you will have a super fast rom with no SOD
xtachix said:
1. its ok, that's probably just a typo, the android version there is 4.1.2. should state JB. via odin you can flash that and you will have official JB
flashing via odin doesnt care which version of android you currently have
Click to expand...
Click to collapse
Thanks for the info.
2. the process of the first link will basically put a whole new kernel and rom in your system. you will have official JB kernel from samsung along with official rom from samsung. your version will be 4.1.2. (this is required to get the ics/jb bootloader which you dont have)
the purpose of the second link is to change the kernel so that it has cwm or twrp recovery integrated in. this will allow you to flash mods and roms and all that. but it is not necisary if you are not willing to use AOSP AOKP MIUI. if you'd like to stick with the official and see how it performs then you don't have to do the second link
Click to expand...
Click to collapse
I would like to go with custom ROMs. do I have to do the chapter 'Instructions For Changing CSC' that is in your first link ?
It says that it will wipe my device.
3. personally i think the simpler the better, i use CM10.1 (CyanogenMod 10.1) <----- thanks to codworkerx, i also like Thinking Bridge http://forum.xda-developers.com/showthread.php?t=2199527 (thanks to Black_Prince for his great work)
couple any of those roms with http://forum.xda-developers.com/showthread.php?t=2251840 kernel (thanks to biagio7xD) and you will have a super fast rom with no SOD
Click to expand...
Click to collapse
Thanks for the info. I don't think I will use the simple CM10.1 . I will look for a nice-looking UI rom.
By the way - do all the ROMs work with the Kernel that I will install in step 1 ?
S2User said:
Thanks for the info.
I would like to go with custom ROMs. do I have to do the chapter 'Instructions For Changing CSC' that is in your first link ?
It says that it will wipe my device.
Thanks for the info. I don't think I will use the simple CM10.1 . I will look for a nice-looking UI rom.
By the way - do all the ROMs work with the Kernel that I will install in step 1 ?
Click to expand...
Click to collapse
Dont worry about CSC.
every rom comes with its own kernel, if you're refering to step one as in the official then that's the kernel for official and nothing else
the blazing kernel is also for official and nothing else (or official based roms)
the kernel link i gave you last was for aosp aokp based roms
xtachix said:
Dont worry about CSC.
every rom comes with its own kernel, if you're refering to step one as in the official then that's the kernel for official and nothing else
the blazing kernel is also for official and nothing else (or official based roms)
the kernel link i gave you last was for aosp aokp based roms
Click to expand...
Click to collapse
So I am a bit confused now ...
You say 'don't worry about CSC'.
Does that mean I don't have to install CSC ?
Or that I do have to install it, but not worry about it...
also - I understood from your 1st comment that I have to go through the official kernel & rom, before I can put a custom rom.
Did I get it right ?
Because now from your last comment - I am understanding that if I want a custom rom - I can go ahead and just install it with its own kernel, without having to go through the first step of installing the official rom and kernel.
xtachix said:
officially yes, unofficially(none samsung) yes
unofficial (none samsung)
first you need to do the official thing (so you can get the ics/jb boatloader in), if you wish to stick with the official then you're done, no need to continue.
then you need to do this: http://forum.xda-developers.com/showthread.php?t=2113545 flash via stock recovery (thanks to Ryuinferno for his great work)
then you can flash whatever rom you want (AOSP, AOKP, MIUI)
Click to expand...
Click to collapse
Another question : I looked at this link - isn't CWM6 old ? I thought that the latest version is 10.1
S2User said:
So I am a bit confused now ...
You say 'don't worry about CSC'.
Does that mean I don't have to install CSC ?
Or that I do have to install it, but not worry about it...
also - I understood from your 1st comment that I have to go through the official kernel & rom, before I can put a custom rom.
Did I get it right ?
Because now from your last comment - I am understanding that if I want a custom rom - I can go ahead and just install it with its own kernel, without having to go through the first step of installing the official rom and kernel.
Click to expand...
Click to collapse
dont worry about the csc means really dont worry, every official rom, custom rom, comes with csc. some of them have multiple csc.
S2User said:
Another question : I looked at this link - isn't CWM6 old ? I thought that the latest version is 10.1
Click to expand...
Click to collapse
CWM = clockworkmod (this is the recovery integrated with the kernel. you have a few main types- cwm, twrp, official). this recovery allows you to install roms and such. version 6 is the latest. if i'm not mistaken the version you have for gingerbread would be (if you have cwm) 4 or 5.
cm = cyanogenmod (this is the rom)
they are two different things.
let us go through the basics:
what does a ROM have?
it has a kernel (this allows you to do the basic io stuff, it has cwm or twrp >> if custom, or official recover if official)
it has a bootloader (this allows you to get into a specific version of roms), official roms have the bootloader
it has system files (this is the actual rom base, it has all the modules)
it has basic apps (well, these are the apps, dialer, messaging, etc..)
it has csc
it has baseband and ril
let us elaborate a little bit:
your phone currently has gingerbread bootloader. so it is version 2.0+
to use Icecream sandwich you need the icecream sandwich bootloader. 4.0+
different version means different bootloader
this is where flashing a rom via odin comes in handy. it will install that specific bootloader into your phone
ofcourse along with other things, like the kernel, actual rom, apps. so you will have a full 4.1.2 system.
notice: ics and jb bootloaders are the same, reason is simple, the base version of both is 4, if there they introduce a version 5 android then everyone has to get the newest bootloader for version 5 to use it.
it doesnt matter where the 4.x+ comes from, if it is aosp aokp official miui, the bootloader is REQUIRED to run any of those
now your first step is to install the official rom (this way you ensure that you have the proper bootloader, and at the same time you get the official 4.1.2). now if you want to keep the official then there is nothing else to do, if by any chance you need to change csc then the steps there are simple, but it is not required. look up what is csc
next you need to install a kernel that has either cwm or twrp (this way you prepare yourself to install custom roms)
next you select the rom you would like to install, download it and put it in your sdcard
next you boot into recover (notice it is different from the official one, it has many options)
install the rom from the sdcard location
and in many cases you will have to install gapps (google apps, and do not make a mistake and install the wrong one, every version of android has its own gapps, if you have 4.2.2 install ONLY 4.2.2 gapps)
done!
as i mentioned above, every rom comes with whatever that it comes with. a kernel, csc, blah blah blah.
so basically what happens when you flash the custom rom?
simple, you change the kernel (zImage) it has its own and that's what it needs to run, and official kernel cannot run an aosp rom. period.
you put a whole new framework, system, apps, based on the android version they have been developed in.
next if you want to modify things, you can get into themes, installing another kernel, changing baseband and ril(Radio Interface Layer), and so on.
well i hope this helps
xtachix said:
dont worry about the csc means really dont worry, every official rom, custom rom, comes with csc. some of them have multiple csc.
CWM = clockworkmod (this is the recovery integrated with the kernel. you have a few main types- cwm, twrp, official). this recovery allows you to install roms and such. version 6 is the latest. if i'm not mistaken the version you have for gingerbread would be (if you have cwm) 4 or 5.
cm = cyanogenmod (this is the rom)
they are two different things.
let us go through the basics:
what does a ROM have?
it has a kernel (this allows you to do the basic io stuff, it has cwm or twrp >> if custom, or official recover if official)
it has a bootloader (this allows you to get into a specific version of roms), official roms have the bootloader
it has system files (this is the actual rom base, it has all the modules)
it has basic apps (well, these are the apps, dialer, messaging, etc..)
it has csc
it has baseband and ril
let us elaborate a little bit:
your phone currently has gingerbread bootloader. so it is version 2.0+
to use Icecream sandwich you need the icecream sandwich bootloader. 4.0+
different version means different bootloader
this is where flashing a rom via odin comes in handy. it will install that specific bootloader into your phone
ofcourse along with other things, like the kernel, actual rom, apps. so you will have a full 4.1.2 system.
notice: ics and jb bootloaders are the same, reason is simple, the base version of both is 4, if there they introduce a version 5 android then everyone has to get the newest bootloader for version 5 to use it.
it doesnt matter where the 4.x+ comes from, if it is aosp aokp official miui, the bootloader is REQUIRED to run any of those
now your first step is to install the official rom (this way you ensure that you have the proper bootloader, and at the same time you get the official 4.1.2). now if you want to keep the official then there is nothing else to do, if by any chance you need to change csc then the steps there are simple, but it is not required. look up what is csc
next you need to install a kernel that has either cwm or twrp (this way you prepare yourself to install custom roms)
next you select the rom you would like to install, download it and put it in your sdcard
next you boot into recover (notice it is different from the official one, it has many options)
install the rom from the sdcard location
and in many cases you will have to install gapps (google apps, and do not make a mistake and install the wrong one, every version of android has its own gapps, if you have 4.2.2 install ONLY 4.2.2 gapps)
done!
as i mentioned above, every rom comes with whatever that it comes with. a kernel, csc, blah blah blah.
so basically what happens when you flash the custom rom?
simple, you change the kernel (zImage) it has its own and that's what it needs to run, and official kernel cannot run an aosp rom. period.
you put a whole new framework, system, apps, based on the android version they have been developed in.
next if you want to modify things, you can get into themes, installing another kernel, changing baseband and ril(Radio Interface Layer), and so on.
well i hope this helps
Click to expand...
Click to collapse
Thanks so much for the information !
I've managed to install 10.1 and now have 4.2.2 !
Thanks so much !
S2User said:
Thanks so much for the information !
I've managed to install 10.1 and now have 4.2.2 !
Thanks so much !
Click to expand...
Click to collapse
you're most welcome,
enjoy your newly flashed rom
hello....if anybody watching this, then please help me upgrading my streak to GB 2.3.3
Actually I am having STOCK FROYO 2.2.2 (rom 355) installed.
how should I upgrade it?
as I have read it on many forums that I have to flash recovery 350, do I really need to because I am already on 355?
and please provide a solution so I don't get any blinking lights bug after upgrading :silly:
HELP PLEASE
Search for threads titled "Everything you always wanted to know about the Streak but were too busy bricking it" and start reading the information at the links that turn up.
If you want to upgrade to Gingerbread, install one of the custom ROMs such as mine rather than go with the 407 ROM. The two DSC ROMs available have had many improvements made that won't be found in the 407 ROM. You will also need to root the Streak and install a custom recovery to do so.
Strephon Alkhalikoi said:
Search for threads titled "Everything you always wanted to know about the Streak but were too busy bricking it" and start reading the information at the links that turn up.
If you want to upgrade to Gingerbread, install one of the custom ROMs such as mine rather than go with the 407 ROM. The two DSC ROMs available have had many improvements made that won't be found in the 407 ROM. You will also need to root the Streak and install a custom recovery to do so.
Click to expand...
Click to collapse
i have read it.......n what I want is to just install a clean stock rom. I really don't want to root my phone or to install a custom rom..........that why I posted this.....if any 1 like you could help to install 407 pkg with no blinking issue and a clear guidence.
Help if you can....
Using baseband 355 retail rom.....
I do understand not wanting a rooted device, as not everyone needs the level of control and customization that is possible with a rooted device. However, there are simply too many issues with the stock ROM to in good conscience recommend using it. As noted, the two DSC ROMs available here fix a lot of issues that are still present in the stock ROM. One notable thing about the DSC ROMs is the Phoenix kernel they include does not perform the baseband check, thus you will never encounter blinking LEDs.
If however you insist upon installing the stock ROM anyway, you'll need to download the 407 baseband files, 407 recovery, and 407 ROM package. You'll have to use ADB to push the baseband files and recovery to the Streak. From there, you copy the ROM to the MicroSD card, boot into the recovery, and install the ROM package. Detailed instructions are readily available in the various flashing guides in the forums. The one thing you'll need to look for is the dev-host links, as that is where you will find the ROMs.
Yes yes.....i have the rom as well the recovery but not the baseband.
Thanks alot
I will check if I can find the baseband files.
By the way Do I need to root to push the baseband through ADB?
Hello everyone, i know i am really late in the game here by playing with this phone but my friend has one and wants me to fix it up for him. it is completely stock running android 2.3.6. I can't seem to make heads or tails of how to stick a recovery on this thing and flash a rom. can anyone point me in the right direction as how to do this? thanks mates
First thing you need to know is that the recovery is compiled into the kernel, so you don't flash a recovery separately, you just flash a custom kernel and you will have a custom recovery after.
The latest stock firmware for this phone is 4.1.2 Jelly Bean, but since the phone is still on the original 2.3.6 firmware, you could flash the old Siyah kernel and use it's recovery to flash custom firmware.
You need to root the phone first. You can root this phone with Framaroot using the Aragorn exploit. Then go to this post and download the Tar version of Siyah 2.6.14 Kernel. Flash it in PDA without ticking Re-Partitioning.
Stable custom Touchwiz based firmware available in the development forum are SHOstock or Cooked. Both are based on 4.1.2, and neither are currently supported but both are stable.
If you want something more recent, there are various aosp based firmwares available in the development forum. You may not be able to flash some of them directly from that old recovery in Siyah 2.6.14, but if you need help, you'll have to try to get some help in their threads, because I don't use those.
Happy flashing, and if you need help, ask.
creepyncrawly said:
First thing you need to know is that the recovery is compiled into the kernel, so you don't flash a recovery separately, you just flash a custom kernel and you will have a custom recovery after.
The latest stock firmware for this phone is 4.1.2 Jelly Bean, but since the phone is still on the original 2.3.6 firmware, you could flash the old Siyah kernel and use it's recovery to flash custom firmware.
You need to root the phone first. You can root this phone with Framaroot using the Aragorn exploit. Then go to this post and download the Tar version of Siyah 2.6.14 Kernel. Flash it in PDA without ticking Re-Partitioning.
Stable custom Touchwiz based firmware available in the development forum are SHOstock or Cooked. Both are based on 4.1.2, and neither are currently supported but both are stable.
If you want something more recent, there are various aosp based firmwares available in the development forum. You may not be able to flash some of them directly from that old recovery in Siyah 2.6.14, but if you need help, you'll have to try to get some help in their threads, because I don't use those.
Happy flashing, and if you need help, ask.
Click to expand...
Click to collapse
If you don't mind me asking, what's the benefit of having the recovery compiled into the kernel. Do you think it is better than having them separately, and if so, can you explain why?
azeem40 said:
If you don't mind me asking, what's the benefit of having the recovery compiled into the kernel. Do you think it is better than having them separately, and if so, can you explain why?
Click to expand...
Click to collapse
You'd have to ask the Samsung engineers why they did that. Since the more common standard is to have the recovery in it's own separate partition, it suggests that is the better solution, I would think.
Having been on a device for a while that has a separate partition for recovery (N5), it's a feature that is extremely comforting in that it is virtually impossible to brick those types of devices.
The way I see it is that having the kernel on the same partition as the recovery is beneficial as more kernels can be built, instead of it being ignored.