Develop Bugs

Need help installing new kernel

Hello and thank you for taking your time in reading, I will start by letting you know my samsung captivate glide is already rooted, android version 4.0.4 and stock kernel 3.1.10-I927ICLJ3-CL970642, now I found this wonderful thread in the development forums:
http://forum.xda-developers.com/showthread.php?t=1892538
mostly im interested in having more available RAM, but it does have a lot of good perks, after reading thru all 32 pages I could not find instruction on how to flash a kernel so here are my questions.
1) how do i flash a new kernel on my phone ?
2) Do i need to flash a rom as well or can i keep the stock ICS with the new kernel ?

Download and install clockworkmod .. the rest will make sense after that

yohan4ws said:
Download and install clockworkmod .. the rest will make sense after that
Click to expand...
Click to collapse
Oh I forgot to mention I already have clockwork mod

not sure if you can keep the stock rom with the kernel (bone stock.) I don't see why not ... I used Dman's UCLJ3 pre-rooted rom and flashed litekernel onto it so you should be able to.
in CWM, install zip from sdcard, browse to your download folder on your phone and install it.
MAKE SURE you do a full backup first so you can revert if something doesn't pan out.

yohan4ws said:
not sure if you can keep the stock rom with the kernel (bone stock.) I don't see why not ... I used Dman's UCLJ3 pre-rooted rom and flashed litekernel onto it so you should be able to.
in CWM, install zip from sdcard, browse to your download folder on your phone and install it.
MAKE SURE you do a full backup first so you can revert if something doesn't pan out.
Click to expand...
Click to collapse
ty yohan, i see that flashing a kernel is pretty much the same as flashing a rom, I like the stock rom, how stable is Dman's ?

There's crashing issues with his AOKP lockscreen version but it could be because I installed thegreatergoods litekernel. So if you're going to download the pre-rooted debloaded deodex. etc etc.. go with the one that doesn't have the lockscreen. the 14 toggles mod will work and can be configured by quickpanel settings in apps.
One thing that shouldn't be overlooked is ICE Pop, it has a themed dialer (big plus) ... Thegreatergoods literom will be good as well, but personally I dont like the cyan and yellow colors in the messaging app.

I flashed the kernel with success but after testing it for a week I decided to go back to stock, tho speeds were amazingly fast the device was alot more unstable and I couldent handle all the crashes and reebots

How well does the phone work with CMRom ? ive been reading in this thread of some happy and some unhappy user
http://forum.xda-developers.com/showthread.php?t=2109774&highlight=best+rom

I recomend to you icePop ROM 1.3
HexbladeInc2 said:
How well does the phone work with CMRom ? ive been reading in this thread of some happy and some unhappy user
http://forum.xda-developers.com/showthread.php?t=2109774&highlight=best+rom
Click to expand...
Click to collapse
Hi! I probe CM10rom but it do not have still audio in recording video, and for me is important.
Now, I have IcePop ROM 1.3 and I like it. Stable and with theatering, video record with audio and my car bluetooth link OK.
Rgrds
koximo

[Q] Xpreia Arc S WiFi is't stable at all !

Hi,
The misery is the ARC S wifi isn't stable at all, it connects to my SSID smoothly and gets IP too. but most of the time I can not open any websites even google.com from the phone browser ! and the funny part is i can't ping the phone IP from my laptop but i can ping my laptop IP from the phone ( ARC S ) !
It's really annoying, for solving this problem I decided to changed the Stock ROM ,Stock Kernel , and unlook the bootloader.
1- I unlooked the bootloader.
2-I flashed [KERNEL][GPL] Vengeance [1.38][3/5] from recovery ,also I installed OTP-Module and Wifi Module.
3- after that I flashed the stock rom to [ROM]{ICS} Xperia Ultimate HD 4.0 | The next Generation | Slim & Beautiful | 08.07.13
4- the arc s Baseband is 77 and I didn't change it.
but at the end none of this efforts doesn't work. and the problem is still exit as before. (
This is my mother phone and she just uses it for surfing the net and goes to facebook, when every time it goes wrong , she'll come to me and asking for troubleshooting ....
please some tell me what should I do to solve wifi problem.

You can try using a different kernel, LuPuS v16 or Advanced stock kernel is recommended.
僕のLT18iから送られてきた

You cant flash kernel from recovery. You have to flash it using fastboot
Sent from my Xperia Arc S using xda premium

popthosegaskets said:
You can try using a different kernel, LuPuS v16 or Advanced stock kernel is recommended.
僕のLT18iから送られてきた
Click to expand...
Click to collapse
First of all Thanks popthosegaskets,
I flashed [KERNEL]ARC/S-Advanced stock-4.1.B.0.587-[ROOT+INIT.D+CWM+SD-EXT] after that I flashed Stock ICS ( 4.1.B.0.587_Generic_World 1254-8596 ) ROM too.
every thing seems more stable especially wifi. but when i flashed kerne via fastboot I didn't installStock_WiFi_modules_ICS_587.zip
with that ( I know, I can install it via recovery ) by the way, Is it necessary ? I'm afraid if I install it, every thing goes wrong again !
what 's your idea about that ?

TheHaso said:
You cant flash kernel from recovery. You have to flash it using fastboot
Sent from my Xperia Arc S using xda premium
Click to expand...
Click to collapse
Thanks buddy
I knew that.

up........

You have to install the WiFi modules AFTER installing the ROM. Otherwise the custom ones (from the kernel) will just be written over by stock ones.

How did you get on with this?
I've tried just about every GB, ICS and JB ROM, and kernels to match. My experience is that any GB ROM/kernel combo and the WiFi is fine. Stock ICS ROM and kernel, WiFi is fine. Any other ICS ROM or kernel, and every JB combo gives poor Wifi performance. Connection drops out, router not in range when standing next to it, and when it is connected, slow speeds. This is one of the many issues I'm having with this phone. When (if) funds permit, I'm going to a Z1.

spankmeplease said:
I've tried just about every GB, ICS and JB ROM, and kernels to match. My experience is that any GB ROM/kernel combo and the WiFi is fine. Stock ICS ROM and kernel, WiFi is fine. Any other ICS ROM or kernel, and every JB combo gives poor Wifi performance. Connection drops out, router not in range when standing next to it, and when it is connected, slow speeds. This is one of the many issues I'm having with this phone. When (if) funds permit, I'm going to a Z1.
Click to expand...
Click to collapse
Well it depends on what combo you used...For me i have gin2kk and lupus gbv2 it's the best experience i ever had,it's better than stock.
Sent from my Xperia Arc LT15i using XDA

pren22 said:
Well it depends on what combo you used...For me i have gin2kk and lupus gbv2 it's the best experience i ever had,it's better than stock.
Sent from my Xperia Arc LT15i using XDA
Click to expand...
Click to collapse
Yeah but Gin2KK is GB-based, so WiFi is fine. I'm now on G2KK and doomkernel v22, and WiFi is great!

[Q] Can not enter recovery

Help! I can not enter recovery with any kernels which support MIUI rom like
Fusion kernel http://forum.xda-developers.com/showthread.php?t=1926299
And this kernel http://forum.xda-developers.com/showthread.php?t=2452819
Other kernels work great.
My device: Sony xperia arc lt15i, baseband 85, Unlocked bootloader

Use latest fusion kernel
Fusion is best kernel I have ever found
Use latest so that u could have no trouble
No need to flash other wifi modules and so on
You wont get any regret feeling after you use fusion!!!!

mwolverine7 said:
Fusion is best kernel I have ever found
Use latest so that u could have no trouble
No need to flash other wifi modules and so on
You wont get any regret feeling after you use fusion!!!!
Click to expand...
Click to collapse
There shall be no comparing of kernel, ROM or apps at XDA
僕のLT18iから送られてきた

mwolverine7 said:
Fusion is best kernel I have ever found
Use latest so that u could have no trouble
No need to flash other wifi modules and so on
You wont get any regret feeling after you use fusion!!!!
Click to expand...
Click to collapse
But the problem is that i cant enter recovery mod. How can i flash any Rom.

[Q] Speedy Rom for Arc S (Lt18i) locked bootloader

Hi Guys,
I am running the .62 official rom and looking for a bloat/crap free ROM to use with my Arc-S. It is a bootloader locked and cannot be unlocked so I need a working rom.
ICS is too slow for me. I can install CWM with x-parts so that works, I have installed some custom ICS roms from CWM backup zips and it works but I can't find any for the GB.
I am hoping for a very rustic base rom with no crap installed. I found a few like X-Gamer but they require the .42 official rom first and I cannot find any working link for it.
Hoping someone can help, I have done quite a bit of searching and really looking to put an end to this journey!

sombra84 said:
Hi Guys,
I am running the .62 official rom and looking for a bloat/crap free ROM to use with my Arc-S. It is a bootloader locked and cannot be unlocked so I need a working rom.
ICS is too slow for me. I can install CWM with x-parts so that works, I have installed some custom ICS roms from CWM backup zips and it works but I can't find any for the GB.
I am hoping for a very rustic base rom with no crap installed. I found a few like X-Gamer but they require the .42 official rom first and I cannot find any working link for it.
Hoping someone can help, I have done quite a bit of searching and really looking to put an end to this journey!
Click to expand...
Click to collapse
Hmm... It is not possible to run jellybean/kitkat without unlocked bootloader, so you have no choice but to use ics ICS has awesome batery life BTW.
Have you tried Xperia ultimate hd by jader? Its not bad. It has aroma installer, so u can unselect those crappy apps.
Press thanks if i help^^
Glad to help:highfive:

sombra84 said:
Hi Guys,
I am running the .62 official rom and looking for a bloat/crap free ROM to use with my Arc-S. It is a bootloader locked and cannot be unlocked so I need a working rom.
ICS is too slow for me. I can install CWM with x-parts so that works, I have installed some custom ICS roms from CWM backup zips and it works but I can't find any for the GB.
I am hoping for a very rustic base rom with no crap installed. I found a few like X-Gamer but they require the .42 official rom first and I cannot find any working link for it.
Hoping someone can help, I have done quite a bit of searching and really looking to put an end to this journey!
Click to expand...
Click to collapse
Use Ultimate HD 5.0.1 its awesome

sombra84 said:
Hi Guys,
I am running the .62 official rom and looking for a bloat/crap free ROM to use with my Arc-S. It is a bootloader locked and cannot be unlocked so I need a working rom.
ICS is too slow for me. I can install CWM with x-parts so that works, I have installed some custom ICS roms from CWM backup zips and it works but I can't find any for the GB.
I am hoping for a very rustic base rom with no crap installed. I found a few like X-Gamer but they require the .42 official rom first and I cannot find any working link for it.
Hoping someone can help, I have done quite a bit of searching and really looking to put an end to this journey!
Click to expand...
Click to collapse
1. You're not allowed to create threads that ask for fastest ROM, or "speedy ROM" as you put it. Please change thread title or a mod will close your thread.
2. Since you're on locked bootloader, you have no choice but to stick with stock based custom ROM. UHD is one good example. However, if it doesn't suit you, you will have to find out for yourself. None of the users or the developers can help you here since you're the one using the phone.
Please read this thread for more information:
http://forum.xda-developers.com/showthread.php?t=2097137
_kohjun_ said:
Hmm... It is not possible to run jellybean/kitkat without unlocked bootloader, so you have no choice but to use ics ICS has awesome batery life BTW.
Have you tried Xperia ultimate hd by jader? Its not bad. It has aroma installer, so u can unselect those crappy apps.
Press thanks if i help^^
Glad to help:highfive:
Click to expand...
Click to collapse
ICS consumes more battery as a base ROM as compared to GB since it uses more resources and has more functions. Please do not give wrong information. The few ways to help ICS save battery are ROM tweaks, kernel tweaks and basic knowledge about maintaining your ROM to make it less power hungry.
If he prefers performance over functionality, GB will be a better choice for him.
esarve said:
Use Ultimate HD 5.0.1 its awesome
Click to expand...
Click to collapse
Each ROM has it's pros and cons so you can't say for sure which ROM works best. Of course if you feel that it works fine, I have nothing to say since it's your phone.
僕のLT18iから送られてきた

popthosegaskets said:
1. You're not allowed to create threads that ask for fastest ROM, or "speedy ROM" as you put it. Please change thread title or a mod will close your thread.
2. Since you're on locked bootloader, you have no choice but to stick with stock based custom ROM. UHD is one good example. However, if it doesn't suit you, you will have to find out for yourself. None of the users or the developers can help you here since you're the one using the phone.
ICS consumes more battery as a base ROM as compared to GB since it uses more resources and has more functions. Please do not give wrong information. The few ways to help ICS save battery are ROM tweaks, kernel tweaks and basic knowledge about maintaining your ROM to make it less power hungry.
If he prefers performance over functionality, GB will be a better choice for him.
Each ROM has it's pros and cons so you can't say for sure which ROM works best. Of course if you feel that it works fine, I have nothing to say since it's your phone.
僕のLT18iから送られてきた
Click to expand...
Click to collapse
But he doesnt have a unlocked bootloader

_kohjun_ said:
But he doesnt have a unlocked bootloader
Click to expand...
Click to collapse
Doesn't mean he cannot flash custom ROM. As long as the custom ROM is stock based and uses stock kernel he can flash it with no problems. He can easily use X-Parts to install recovery, flash any stock based custom ROM and use it. Locked bootloader does not allow unsigned kernel(a.k.a any custom kernel) to be flashed on the phone since only Sony can sign the kernels.
僕のLT18iから送られてきた

Flashing Xperia Play-Beginner-where to start

Hello I am new to flashing android phones. I am currently using my Xperia Z with Android 4.4.4. But i have heard good things about old phones running new android versions. and since i like to play games, and i used the Xperia Play back in the days I was very curious about using it again. My only problem is. Where to go. I see allot of different things out there. I for example checked out cyanogenmod. But the latest file they have is from 2013-09-29 and seems outdated to me [correct me if I am wrong] I am seeing different roms for different kind of users, but I am not sure what content u want to be different.
So in a nutshell. I just want a full Android experience with better performance. i think lollipop is the way i wanna go.
I am on the original android version [2.3.4]
Any tips and tricks are welcome

There arent any official cyanogen mod roms (like kitkat, lollipop) for Xperia play anymore. You have to check the development section for unofficial cyanogen mod builds.
I made the same decision as you I used a Galaxy s3 with Android 4.4.4. But i always wanted to revive my play. I Tried out several roms, Jellybean, Kitkat, Lollipop (All found in development section) but was quite dissapointet. Jellybean had graphical issues and had a poor gaming Performance even with 1.6Ghz overclock. Lollipop isnt stable at all. So i tried out a gingerbread rom with a lollipop theme and now im quite satisfied. Its fast, has a Good gaming Performance and has no problems at all.
Additionally You should use link2sd because the internal memory is small and if you are using an android 4.0.4+ rom greenify is a great way to keep apps from running in the background and using to much ram.
Maybe try out some roms like i did, before you make the play your main device again.
Tutorials for rooting, bootloader unlocking etc. can all be found here.
Sent from my R800i using XDA Free mobile app

Hydrony said:
There arent any official cyanogen mod roms (like kitkat, lollipop) for Xperia play anymore. You have to check the development section for unofficial cyanogen mod builds.
I made the same decision as you I used a Galaxy s3 with Android 4.4.4. But i always wanted to revive my play. I Tried out several roms, Jellybean, Kitkat, Lollipop (All found in development section) but was quite dissapointet. Jellybean had graphical issues and had a poor gaming Performance even with 1.6Ghz overclock. Lollipop isnt stable at all. So i tried out a gingerbread rom with a lollipop theme and now im quite satisfied. Its fast, has a Good gaming Performance and has no problems at all.
Additionally You should use link2sd because the internal memory is small and if you are using an android 4.0.4+ rom greenify is a great way to keep apps from running in the background and using to much ram.
Maybe try out some roms like i did, before you make the play your main device again.
Tutorials for rooting, bootloader unlocking etc. can all be found here.
Sent from my R800i using XDA Free mobile app
Click to expand...
Click to collapse
i guess that is quite recent u tried lollipop? I am hearing good things about old devices running 4.2, but ur not happy with the stability of that on the xperia play? And is it not possible to use sd for half internal space or something like that?
ur talking about the Development section. u mean on xda page? I am not that familiar with xda for now. if u got a link in some directions. would be appreciated
Edit: I also checked android.gs. Recommended by some peeps. but still i have no clue where to start. I still think Cyanogenmod is the way i whanna go if u whant stability. And is it recommended to use ''SuperOneClick'' for the Xperia Play?
Edit2: i installed cyanogenmod on my xperia play, but i get ''unsupported Device'' i can press ''Continue Anyway'' but I am not sure that is smart to do. some advice would be nice

Don't be lazy, check sticky threads in Xperia Play section.
Be aware, Xperia Play don't have emulated sdcard. Sdcard is real sdcard and internal available memory is limited.
My advice, use GB stock-based roms for best game perfomance.
Unlock your bootloader and flash Lupus GB kernel for more perfomance (compared to stock) and more internal memory (640MB compared to 380MB that stock have). Use link2SD, app from market, and move your apps to SDcard.
Official, last CM for Xperia Play is CM7. Unofficialy, there are FXP (FreeXperiaTeam) builds that goes up to lolipop. But IMHO, they are lacking in game-support (on lolipop touchpads don't even work, and gamepad buttons is inverted, on jellybean there are lag when pressing touchpads)

Bakisha said:
Don't be lazy, check sticky threads in Xperia Play section.
Be aware, Xperia Play don't have emulated sdcard. Sdcard is real sdcard and internal available memory is limited.
My advice, use GB stock-based roms for best game perfomance.
Unlock your bootloader and flash Lupus GB kernel for more perfomance (compared to stock) and more internal memory (640MB compared to 380MB that stock have). Use link2SD, app from market, and move your apps to SDcard.
Official, last CM for Xperia Play is CM7. Unofficialy, there are FXP (FreeXperiaTeam) builds that goes up to lolipop. But IMHO, they are lacking in game-support (on lolipop touchpads don't even work, and gamepad buttons is inverted, on jellybean there are lag when pressing touchpads)
Click to expand...
Click to collapse
I am not lazy. I am just overwhelmed by the content there is out there. this confuses me at where to start for beginners. so ur saying the best way is using lupus not cyanogemod? and what android version is that lupus ur talking about?
Be aware, Xperia Play don't have emulated sdcard. Sdcard is real sdcard and internal available memory is limited.
Click to expand...
Click to collapse
maybe we have a miss-communication here, but i heard somewhere that it is possible to install the internal system on the other half of the sdcard. correct me if I am wrong here. Or isn't that what u meant

Lupus is not a rom. Its a kernel. So the two things you can change at your phone are the kernel and the rom. The kernel controls the hardware of your phone, like the maximum clock frequence the cpu can scale up to, the way the ram is handled and partition sizes of the internal memory. Additionally most kernels like lupus include a custom recovery, that is needed to flash roms. The kernel can only be flashed via fastboot. This is why you have to unlock your bootloader. Otherwise you wont have access to the part of your phone where the kernel is stored.
So if you want to flash a rom, you have to flash a kernel first, but not every kernel can be used for every rom. Lupus will work with gingerbread roms only, turbo kernel works on ics and jellybean roms etc. You have to check the different kernel threads to decide which one is best for your needs and fits to the rom you want to flash.
Sent from my R800i using XDA Free mobile app

Hydrony said:
Lupus is not a rom. Its a kernel. So the two things you can change at your phone are the kernel and the rom. The kernel controls the hardware of your phone, like the maximum clock frequence the cpu can scale up to, the way the ram is handled and partition sizes of the internal memory. Additionally most kernels like lupus include a custom recovery, that is needed to flash roms. The kernel can only be flashed via fastboot. This is why you have to unlock your bootloader. Otherwise you wont have access to the part of your phone where the kernel is stored.
So if you want to flash a rom, you have to flash a kernel first, but not every kernel can be used for every rom. Lupus will work with gingerbread roms only, turbo kernel works on ics and jellybean roms etc. You have to check the different kernel threads to decide which one is best for your needs and fits to the rom you want to flash.
Sent from my R800i using XDA Free mobile app
Click to expand...
Click to collapse
I already unlocked my bootloader then i need to root my phone right? I am trying to follow [GUIDE][18th Dec][4Noobs] Root BootLoader Unlocked Xperia Play. But it says ''After flashing your ROM.''
I am not sure what that means. i tried SuperOneClick but that seems to only work with below .62
I know u can change roms which suits me the best. But can i also change kernels

Paynemaster said:
I already unlocked my bootloader then i need to root my phone right? I am trying to follow [GUIDE][18th Dec][4Noobs] Root BootLoader Unlocked Xperia Play. But it says ''After flashing your ROM.''
I am not sure what that means. i tried SuperOneClick but that seems to only work with below .62
I know u can change roms which suits me the best. But can i also change kernels
Click to expand...
Click to collapse
Unlocking bootloader is just that, unlocked bootloader. It is only for purpose to be able to flash custom kernels (other then stock). Since you have done it, you don't have to be bothered with any more info about unlocking bootloader.
Root is different thing. It enable you administartive rights on your phone, so you could change stuff (it would be also overwhelming if i say what stuff). Most (99.99%) custom roms comes pre-rooted and you don't need to bother with it. if you are trying to root stock firmware, keep in mind that zergrush methot for rooting (i think even super-one-click use same method) work for .42 firmware and bellow. For .62 and above firmware use eroot (just google file named "eroot_v1.3.4.exe")
Use flashtool. it's a program for PC from http://flashtool.net for flashing stock firmare (ftf files) and kernels (kernel is with .img extension). If you mess something up, flashing stock ftf is 100% working way to restore phone to working condition.
Also, most (99.99%) of custom kernels have ClockworkMod recovery (or TeamWinProjectRecovery) that you can enter with button when booting (most of times it's vol-, but some of them use 'back" button).
As for internal memory, yes, you can expand it, but it tends to complicate things, so, i wouldn't recommend you to that for now.
Use kernel that matchs the rom you are trying to flash. GB rom won't boot if you have flashed ICS (or JB) kernel.
As for what is better rom/kernel, no one can answer that question (it's just troll food). You have to find yourself what suit your taste.
Check Xperia Play Index - ROM'S, FIRMWARE, KERNEL'S, GUIDE'S, THEMES, MOD'S

Root is different thing. It enable you administartive rights on your phone, so you could change stuff (it would be also overwhelming if i say what stuff). Most (99.99%) custom roms comes pre-rooted and you don't need to bother with it. if you are trying to root stock firmware, keep in mind that zergrush methot for rooting (i think even super-one-click use same method) work for .42 firmware and bellow. For .62 and above firmware use eroot (just google file named "eroot_v1.3.4.exe")
Use flashtool. it's a program for PC from http://flashtool.net for flashing stock firmare (ftf files) and kernels (kernel is with .img extension). If you mess something up, flashing stock ftf is 100% working way to restore phone to working condition.
Click to expand...
Click to collapse
Ahhh o was thinking i had to root stock in order to install different kernels/roms but if i understand, u only need to unlock the bootloader in order to run different kernels/roms for that.
So flashing a kernel is some sort of way for making a backup?
Edit: Yeah i have .69 i tried super-one-click but it crashed right away. I am already gonna use a different kernel i see not reason why i should root my stock version

Root is different thing. It enable you administartive rights on your phone, so you could change stuff (it would be also overwhelming if i say what stuff). Most (99.99%) custom roms comes pre-rooted and you don't need to bother with it. if you are trying to root stock firmware, keep in mind that zergrush methot for rooting (i think even super-one-click use same method) work for .42 firmware and bellow. For .62 and above firmware use eroot (just google file named "eroot_v1.3.4.exe")
Click to expand...
Click to collapse
I used "eroot_v1.3.4.exe". Phone seems to be rooted. i got Superuser now. Only when i launch it it shows me ''There are currently no Superuser app policies'' do i need to install something else in in order to use it?
the reason why i whant to root my stock is i whant to have a recovery backup on hand.
i still find some of the tutorials on xda real foggy. so like when i see a kernal i like and i whant to install, i use Flashtool to install them?
its still really confusing which rom works with which kernel. i can't really find a nice thread to look this out

Paynemaster said:
Ahhh o was thinking i had to root stock in order to install different kernels/roms but if i understand, u only need to unlock the bootloader in order to run different kernels/roms for that.
Click to expand...
Click to collapse
Yes
Paynemaster said:
I used "eroot_v1.3.4.exe". Phone seems to be rooted. i got Superuser now. Only when i launch it it shows me ''There are currently no Superuser app policies'' do i need to install something else in in order to use it?
the reason why i whant to root my stock is i whant to have a recovery backup on hand.
i still find some of the tutorials on xda real foggy. so like when i see a kernal i like and i whant to install, i use Flashtool to install them?
its still really confusing which rom works with which kernel. i can't really find a nice thread to look this out
Click to expand...
Click to collapse
Now you have root. Superuser app is just app that grant other apps root permission. On it's own don't have much to do. When other app ask for root permition, you'll be asked do you want to grant or deny that root permission.
To have recovery on stock kernel, you'll need app for that.
[APP]/[RECOVERY]x-Parts [CWM Installer] [Version 7.0] 29/6/12
Make sure you download v5 (CWM Installer-v5.apk) from attachment, because v7 don't work on Xperia Play
When you have custom kernel, you won't need app for recovery, because recovery is already included in kernel.
You don't need flashtool to install kernel, but it is much easier, with just few click.
Without flashtool, you'll need to put kernel file in same directory where you adb.exe and fastboot.exe is (from android SDK or flashtool folder) and flash it by typing from command promt (i don't even remember exact commands for it, it was so long ago i was flashing that way, that i forgot about it)
And also, flashtool containt windows driver for flash and fastboot mode.
As i said, kernel must be same match as ROM.
Stock kernel, Lupus GB v12, Doomlord V14, Extreme kernel are used for roms based on stock firmware (which is GB) and you can't use ICS, JB, KK or LP roms with those kernels.
Also, most CM roms comes with kernel inside zip file (boot.img) that need to be flashed.
CM7, even it's GB rom must use it's own kernel because it is not stock-based rom and will not work with stock-based kernels.

If you dont have any app that needs superuser rights, then it wont show you anything of course. You could try no-frills cpu control to see that youre rooted for example.
Almost every rom comes with a kernel. So if you download a rom, check the zip-file and if something like boot.img is included in there extract it. This kernel should perfectly work with the rom, because the developer included it, or he build this kernel especially for the rom.
If you succesfully flashed the kernel through fastboot and got the rom to work you can think about using another kernel
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Hydrony. U where talking about ur using gingerbread now. u also mentioned try using android 4.0.4+ rom greenify. for lower hardware usage. I cannot find ''rom greenify'' in the development section.
I am checking out this rom http://forum.xda-developers.com/xperia-play/development/dev-play-neo-l-legacyxperia-t2802932 the part I don't understand are the requirements. They say ''Have the stock ICS 4.1.B.0.587 full ftf flashed'' i guess that is the CM Kernel right? They are talking about the CM11.0 in the thread titel but i see https://basketbuild.com/devs/LegacyXperia/zeus a CM12.0 version in the folders. does this mean there is an update for this CM, and that i can now go for CM12.0 or is this for other devices? After that they are talking about ''R800i (Play) users need to flash MT25i (Neo L) ftf'' is this something i must do first? and what is it

Almost every rom comes with a kernel. So if you download a rom, check the zip-file and if something like boot.img is included in there extract it. This kernel should perfectly work with the rom, because the developer included it, or he build this kernel especially for the rom.
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i have totally no idea where to unpack this..
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i do got the kernel with it ''boot.img''
If you succesfully flashed the kernel through fastboot and got the rom to work you can think about using another kernel
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Editke i got it running now. i only forgot to install gapps. iam not sure if it matters which gapps i take http://forum.xda-developers.com/showthread.php?p=53319258#post53319258 Should i just go for 5.0.X?
its hard finding a kernel+rom where i can use Nintendo 64 Emulator without problems. tried 2 so far but they booth keep hanging up. anyone got a link to one i should try?

Yes, I am using a gingerbread rom, because its fast and reliable and all emulators i use (Drastic, n64oid etc.) Run very well.
Greenify is not a rom, its an app thats Working on devices with at least ice cream sandwhich installed. It hibernates all apps, that you dont use at the moment, so they dont waste ram capacity which is quite important on devices with low ram like Xperia play.
Ftf files must be flashed with flashtool. They are the stock firmwares from sony and some custom roms need specific stock Roms as a base. So you should install them before flashing kernel etc. If you dont want to encounter problems
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Ftf files must be flashed with flashtool. They are the stock firmwares from sony and some custom roms need specific stock Roms as a base. So you should install them before flashing kernel etc. If you dont want to encounter problems
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ah oke. So that means i have to download the stock firmware, flash it. And after that, flash the kernel? Is there only one ftf stock firmare file? Or does every different kernel needs a different stock firmware