[Q] Unable to change the kernel - Xperia Arc Q&A, Help & Troubleshooting

Hello, I have a 2011 LT18a with rooted, with bootloader unlocked.
I've tried to install many roms, but much of time, the custom kernels brick my phone (stuck on sony logo).
Nobody seems to have any problem tough, so I think i did something wrong.
Where should I start to search?

If you have the Sony logo when booting, you might not be booting the custom kernel. How are you flashing your custom kernels?

sinkster said:
If you have the Sony logo when booting, you might not be booting the custom kernel. How are you flashing your custom kernels?
Click to expand...
Click to collapse
I'm using flashtool.
Neither the Doomlord nor stock kernel with cwm boot, tough I already used them with success.

What rom did u use with the kernel?
Sent from my lt18 using xda premium

just check that you're not hot-booting, as that only boots the .img file temporarily. you're better using fastboot (fastboot flash boot <bootname>.img

Related

[Q] How to reboot into recovery mode?

Hello everybody,
I managed to install the clockworkmod recovery for the Xperia play.
But I don't know how to reboot into recovery mode.
I searched a lot but I can't find the key combination for rebooting into fastboot/bootloader
or recovery mode.
Please help.
Turn device off. When off, press the power button, and start tapping the back button untill device boots into recovery.
Sent from my R800i using Tapatalk
Thanks. But unfortinatly thats does not work.
The device just booted up normally.
May be there is another method or I am doing somthing wrong?
ZeCoder said:
Thanks. But unfortinatly thats does not work.
The device just booted up normally.
May be there is another method or I am doing somthing wrong?
Click to expand...
Click to collapse
I see you posted in the CWM thread, did you boot the recoveryPLAY.img? if so you dont have CWM installed, thats a temp image, your ment to boot from fastboot every time you want to use recovery. You need to flash a kernel with recovery embedded, if your using a r800i with the latest firmware, try doomlords kernel.
AndroHero said:
I see you posted in the CWM thread, did you boot the recoveryPLAY.img? if so you dont have CWM installed, thats a temp image, your ment to boot from fastboot every time you want to use recovery. You need to flash a kernel with recovery embedded, if your using a r800i with the latest firmware, try doomlords kernel.
Click to expand...
Click to collapse
Thank you very much.
I thought that it is permanent.
Thanks again.
ZeCoder said:
Thank you very much.
I thought that it is permanent.
Thanks again.
Click to expand...
Click to collapse
What is it, unlike other android device, on the play recovery is held on /boot partition. This is the same partition as the kernel. So if you was to just flash a recovery, this would overwrite /boot partiton, and because there would be no kernel, the device wouldnt boot. So kernel and recovery have to be combined into one boot.img.
That recoveryPLAY.img, NEVER FLASH IT, alway boot it. If you flash it, it will corrupt your /boot partition.
AndroHero said:
I see you posted in the CWM thread, did you boot the recoveryPLAY.img? if so you dont have CWM installed, thats a temp image, your ment to boot from fastboot every time you want to use recovery. You need to flash a kernel with recovery embedded, if your using a r800i with the latest firmware, try doomlords kernel.
Click to expand...
Click to collapse
Hey erm....I have the same problem as him but i don't understand what you are saying. Can you please please please explain to me what to do???
maksiitis said:
..................
Click to expand...
Click to collapse
doomlord/keiren = tap back button
cm7/cm9/ICX/MIUI = tap the vol down button
I'm so glad I found this post. It was really useful. Also felt good using the search and actually finding what I need.
I can't flash Clockworkmod recovery with ROM manager
I can't flash Clockworkmod recovery with ROM manager.
It says me that I have to install a Clockworkmod based recovery manually.
How can I do it?
As they said u should boot custom kernel (like eg. Doomkernel) to have recovery. I think there is no cwm for play working with stock kernel, or maybe is but it cant be booted.
Sent using r800i with DoomKernel v11 (1.21ghz)
What's a kernel and what i have to do?
Hi, I've just rooted my Play and installed CWM using this app:
https://play.google.com/store/apps/...251bGwsMSwyLDEsImNvbS5wdnkuQ1dNaW5zdGFsZXIiXQ..
I've installed CWM with no issues (or so the app says) but I can't boot into Recovery. There's an option in the app to reboot into recovery; but all that does it reboot the device normally (except that there's no boot animation). Also tried tapping back continuously during boot and volume down but still nothing.
Is this going to be a kernel issue? If so how should I go about getting the appropriate kernel on my phone?
As the says in description: reboot phone and when it shows sony ericsson logo u should wait for blue led and than start pressing any key an it should boot to recovery
Sent using r800i with DoomKernel v11 (1.21ghz)
Trism said:
Hi, I've just rooted my Play and installed CWM using this app:
https://play.google.com/store/apps/...251bGwsMSwyLDEsImNvbS5wdnkuQ1dNaW5zdGFsZXIiXQ..
I've installed CWM with no issues (or so the app says) but I can't boot into Recovery. There's an option in the app to reboot into recovery; but all that does it reboot the device normally (except that there's no boot animation). Also tried tapping back continuously during boot and volume down but still nothing.
Is this going to be a kernel issue? If so how should I go about getting the appropriate kernel on my phone?
Click to expand...
Click to collapse
Use the app to install cwm again. It doesn't always take the first time.
Sent from my R800x using XDA
nachovilagraca said:
What's a kernel and what i have to do?
Click to expand...
Click to collapse
Kernel is a part of phone system which is connecting rom with hardware (i think) there is some custom kernels which is usually (always?) prerooted and has builtin recovery. With custom one u can eg. Overclock and/or undervolt ur cpu
U need to find one here on xda and than boot it using fastboot - in kernel's thread should be said how to do it.
Sent using r800i with DoomKernel v11 (1.21ghz)
ch3mn3y said:
Kernel is a part of phone system which is connecting rom with hardware (i think) there is some custom kernels which is usually (always?) prerooted and has builtin recovery. With custom one u can eg. Overclock and/or undervolt ur cpu
U need to find one here on xda and than boot it using fastboot - in kernel's thread should be said how to do it.
Sent using r800i with DoomKernel v11 (1.21ghz)
Click to expand...
Click to collapse
Great info.
nachovilagraca said:
I can't flash Clockworkmod recovery with ROM manager.
It says me that I have to install a Clockworkmod based recovery manually.
How can I do it?
Click to expand...
Click to collapse
you need to install custom kernel such as doomlord,lupus,mjolnir,fxperia
nachovilagraca said:
I can't flash Clockworkmod recovery with ROM manager.
It says me that I have to install a Clockworkmod based recovery manually.
How can I do it?
Click to expand...
Click to collapse
you need to flash custom kernel which provide cwm..
flash one of them in fastboot mode.
you can choose doomlord, keiran, cm7, cm9, icx, miui, mjolnir and else
There is an app on the Google Play store called Xperia CWM Auto Installer. It automatically installs CWM.
Sent from my R800x using xda premium

[Q] Peculiar Problem with R800i boot

Hi guys noob to these forums so bare with me,
I have one of the first ever revisions of the r800i fully unlocked etc. I have been using Cyanogen Mod 7.2 on it for months now with the free xperia kernel (cannot tell you which version all i know it is one of the very early versions) but I have now decided I wanted to change to another ROM however my kernel will not allow any other rom, it just boot loops. I managed to get DoomLord's Kernel for ICS 4.0.3 Alpha to work, with ICS 4.0.3 but that is the only kernel which will work. CM9.0 kernel just freezes with a pink light :/
Also any other dark forest kernel or doomlord kernel just boot loops too.
I also tried installing a clean version of CM7 and that just doesnt boot for its life, I have to restore my backup image to get anywhere, with my original kernel as i cant even get into CWM with any other kernel except for DoomLord ICS (and my original of course).
I did have the 36 firmware installed but since then changed to 42 and 62 (finding 42 to work best signal wise).
If someone could help me it would be appreciated very much.
Defy39 said:
Hi guys noob to these forums so bare with me,
I have one of the first ever revisions of the r800i fully unlocked etc. I have been using Cyanogen Mod 7.2 on it for months now with the free xperia kernel (cannot tell you which version all i know it is one of the very early versions) but I have now decided I wanted to change to another ROM however my kernel will not allow any other rom, it just boot loops. I managed to get DoomLord's Kernel for ICS 4.0.3 Alpha to work, with ICS 4.0.3 but that is the only kernel which will work. CM9.0 kernel just freezes with a pink light :/
Also any other dark forest kernel or doomlord kernel just boot loops too.
I also tried installing a clean version of CM7 and that just doesnt boot for its life, I have to restore my backup image to get anywhere, with my original kernel as i cant even get into CWM with any other kernel except for DoomLord ICS (and my original of course).
I did have the 36 firmware installed but since then changed to 42 and 62 (finding 42 to work best signal wise).
If someone could help me it would be appreciated very much.
Click to expand...
Click to collapse
Yup, been getting the same problem. I was only able to use the first ever version of DoomKernel for the Play but couldn't use any version after that as it always resulted into a recovery loop - Boot up phone, at boot logo shows blue light and goes automatically to recovery, try to reboot and same thing happens again.
Can't even use Keiran's kernels which use Doom's sources. :/
Sent from my R800i using XDA App
have you tried
Code:
fastboot -i 0x0fce erase boot
followed by
Code:
fastboot -i 0x0fce flash boot boot.img
The first command erases the boot partition, the second command flashes a new kernel (I don't know if it'd help, it's just an idea, and it can cause troubles, if you don't flash a new kernel)
ok thanks I shall give that a try
paxChristos said:
have you tried
Code:
fastboot -i 0x0fce erase boot
followed by
Code:
fastboot -i 0x0fce flash boot boot.img
The first command erases the boot partition, the second command flashes a new kernel (I don't know if it'd help, it's just an idea, and it can cause troubles, if you don't flash a new kernel)
Click to expand...
Click to collapse
Shall try and report. Thanks for the quick reply mate.
Sent from my R800i using XDA App
Still does exactly the same thing :/
Have you guys tried using either wotanserver or flashtool to flash back to stock then fastboot a new kernel?
(Both work with unlocked bootlaoders, well, I've tried wotan with a test point unlocked, I don't know about legit unlocking...)
I've tried it with Flashtool but doesn't work.
Sent from my R800i using XDA App
I get exactly the same thing using this software. I use flashboot in general anyway, I find it ALLOT easier than using fastboot itself, just can't seem to get my head around this problem :/
Have u tried the 1.6ghz version? What about doomlord advanced stock?
Sent from my R800i using Tapatalk
Tried both and same thing happens.
Have also posted about this in DooM's thread.
Sent from my R800i using XDA App
I managed to get Dooms 1.6GHZ kernel to work for cm7.2, very very unstable and CWM doesnt load.. :/

[Q] Arc Not Booting :( [RESOLVED]

OK, I Know I did a very stupid thing but I flashed the Nordik Version of the Official ICS Rom for Arc S on My Arc.
Now The problem is when it was flashing, the flash stopped at a certain point. Here is the message
14/002/2012 20:02:24 - INFO - Flashing userdata.sin
14/002/2012 20:02:24 - ERROR - Error flashing. Aborted
14/002/2012 20:02:24 - INFO - Now unplug the device and power it on
Click to expand...
Click to collapse
But then After I Rebooted, It showed the sony logo for a second and then some logo of the mobile with a caution symbol (Yellow Exclamatory Mark). And thats it, after a couple of seconds, it switched off.
I repeated the process and the same thing.
Scared Then I Flashed a Doom Kernel and did a factory reset. While the factory reset, it said that it could not open \data :|
i tried formating data many times but it could not mount it saying different file system.
So I flashed a matching Custom ROM and It does not work, Nether is any app installing nor any file getting saved
Please Help!
And Anyway to solve the /userdata filesystem problem?
If flashtool stopped then try re-downloading the file in case it was corrupt, and try to re-flash. If that's not successful download a stock 2.3.4. ftf and flash that.
FTF Wasnt corrupt :\
Now I Have tried flashing the 2.3.4 Android aswell BB 48
A Very old one which I downloaded around december time to root my Arc.
That doesnt even go past the SE Logo
The Custom ROM atleast booted.
My Guess is that the userdata partition has a different filesystem than the one it can read :\
Think it's to do with flashtool being unable to handle ICS data parameters. Binary has posted some type of workaround till he updates it.
Ok, Will check them out.
Thanks!
In his post?
think so, it's mentioned in the thread.
Nope
It stops while flashing the system.sin file
Anyway to solve the /userdata filesystem problem?
Not yet, apparently. I use cm9 so don't really know, though I think there's a cwm flashable ics stock.
sinksterĀ©
No Use of that
Try connecting in fastboot, and use the erase or format commands, e.g. 'fastboot erase boot' or erase system, in case it's a system partition issue
Then try a kernel and rom.
sinksterĀ©
OK, Apparently the problem was that I was using an old version of the flashtool (0.5.8)
I downloaded the latest 0.6.9.1 and followed the 3 step flasshing process
Enjoying ICS on my LT15i
SS4Serebii said:
OK, Apparently the problem was that I was using an old version of the flashtool (0.5.8)
I downloaded the latest 0.6.9.1 and followed the 3 step flasshing process
Enjoying ICS on my LT15i
Click to expand...
Click to collapse
Hi ,
I have ARC S with unlocked boot loader.
I can install any kernel on the phone via fast boot or by using the flashtool latest version.Right now I have installe dthe lupus kernel V16 and I can boot to the CWM and I hae installed the latest version of Ultimate Xperia HD by jader , I can install and after installation if i reboot the phone is stuck at booting screen only. I have tried various kernels and various roms all are giving the same issue.
I can install the ROM but cannot boot it gets stuck at booting screen. I have formatted the partition's via fastboot and by using the CWM still the issue persists.Please help.
Flash the stock firmware ftf file, then try again, or flash a different kernel.
Sent from my Xperia X10 using xda premium
I have tried the same.and it stops and doesn't flash the Rom loading Kernel is very easy, can install Rom too but after this
When I boot it just sits at boot screen
Sent from my iris405 using Tapatalk 2
santsplen said:
I have tried the same.and it stops and doesn't flash the Rom loading Kernel is very easy, can install Rom too but after this
When I boot it just sits at boot screen
Sent from my iris405 using Tapatalk 2
Click to expand...
Click to collapse
Hi guys , Please help me as I have tried multiple kernels and roma all of them exhibit same issue,
Booting to CWM using the CWM inbuilt into the kernel takes a long time as well as once a rom is installed via CWM it completes installation and then comes to the boot screen and it sits at the boooting screena and does not get past it.
How are we gonna help if you don't state ROM and kernel and what exactly you did.
Sent from my Xperia X10 using xda premium
I have installed lupus v 16 kernel , with xperia ultimate hd rom and xperia blue rom both are having same issue.I can boot to cwm and install the rom but after you give reboot after the rom installation it just sits at the boot animation screen .
One thing I noticed is that booting to cwm takes almost a minute after turning on the phone , is this normal ?.
Sent from my iris405 using Tapatalk 2
Did you wipe everything before instaling, and have you tried reflashing th kernel
Sent from my X10i using xda premium
I have wiped system and data ,cache,dalvik cache and have even formatted the partitions from fastboot using fastboot commands ,have even tried rush kernel and u am facing same issue .Please help.
Sent from my iris405 using Tapatalk 2

unable to go into recovery arc. 431

I am using arc with rooted. 431 firmware. but I am unable to go into recovery manualy. phone stucked on Sony logo. I installed via recovery auto installer. same issue I was facing when I was on. 62 version. any soloution?
Try reflashing the entire firmware using flash tool and install recovery using SE Tweak Installer found in development section.. Plz search for it
Sent from my LT15i using XDA
I tried every thing. reinstall firmware, repair my phone, unlockbootloader n root again. install recovery by tweak installer but still same isuue. where is the problem??
even i installed recovery via flshtool. but unable to go into recovery
First enable usb debugging enable install of non market applications in arc settings! Thats very important! Then connect the mobil to pc and open the installer.. Make sure drivers are installed.. If not, install from drivers folder of flashtool.. Then select 'cwm for arc' option from installer and wait for it to complete! Then reboot
Sent from my LT15i using XDA
Try an other Usb Slot. When I connect the phone at the front Usb slot, my phone will not be detected.
Sent from my LT15i using XDA
I do the same. recovery installed properly, but still I am unable to boot into recovery. it stucks on Sony logo. but for.rooting I hotboot in custom kernel then I can easily go into recovery. I think it happens when I installed 4.03 for arc s in my arc. after that I was unable to boot into recovery even in gingerbread with stock kernel. :-(
Well it shud do the trick!
Try changing kernel and see!
Sent from my LT15i using XDA
I flash @doomlord kernel. but still the same issue. i go back to .62 firmware installed new kernet. but whenever i try to go into recovery, my phone stuck at sonyericsson logo or at doomlord logo. Any body please help me @doomloed @zidzihu @anybody....
rizwanzz said:
I flash @doomlord kernel. but still the same issue. i go back to .62 firmware installed new kernet. but whenever i try to go into recovery, my phone stuck at sonyericsson logo or at doomlord logo. Any body please help me @doomloed @zidzihu @anybody....
Click to expand...
Click to collapse
as i know the recovery is flashable with the kernel, so you can also try to connect the phone in fastboot, than "fastboot flash boot boot.img" when it done, "fastboot reboot" than pushing the volume button. maybe you know this, but noone knows GL
you try to flash via fastboot the .431 kernel with CWM. u can get it on the development section.
rizwanzz said:
I flash @doomlord kernel. but still the same issue. i go back to .62 firmware installed new kernet. but whenever i try to go into recovery, my phone stuck at sonyericsson logo or at doomlord logo. Any body please help me @doomloed @zidzihu @anybody....
Click to expand...
Click to collapse
Read this thread (http://forum.xda-developers.com/showthread.php?t=1345741), specially the last pages, and see if it can help you.
I had the same issue as you (stucked in the kernel logo) although I'm on a locked bootloader.
I solved the question by editing a little...
Hope it helps.
dyepnoodle said:
you try to flash via fastboot the .431 kernel with CWM. u can get it on the development section.
Click to expand...
Click to collapse
i did the same but still no success. is there any way to format all partations like, boot partation, kernal partation and recovery partation and start from scratch.
Flash the .431 fw again to your phone.

after installing cwm recovery have problem

I can't seem to find a answer for this problem. I have an xperia zl C6506 which I have unlocked bootloader and also have rooted. My problem is that I try to install cwm recovery which I can but after I do that I can get into recovery but cannot bot into stock. I then have to go in and use flashtool to kernel so I can boot again but then can't get into cwm recovery again. Need help read everything I can and tried more then once to install cwm recovery but always have same issue. Hopefully someone can help me with this because can't install custom rom. Did I miss something please help.
Sounds like the recovery you're installing isn't compatible with ROM? what ROM are you using and what kernel/recovery specifically? Are you using doomkernel? Because doomkernel comes with both TWRP and CWM and I know it works with stock. If you're not using stock, then Meow kernel?
TheTofu said:
Sounds like the recovery you're installing isn't compatible with ROM? what ROM are you using and what kernel/recovery specifically? Are you using doomkernel? Because doomkernel comes with both TWRP and CWM and I know it works with stock. If you're not using stock, then Meow kernel?
Click to expand...
Click to collapse
I'm using stock firmware 10.3.1.A.2.67 which I have bootloader unlock and rooted, but the DoomlLord kernel shows earlier frimwoare FW-253-v4 not mine. Do you know which DoomLord kernel will work with my firmware?
jimmydee62 said:
I'm using stock firmware 10.3.1.A.2.67 which I have bootloader unlock and rooted, but the DoomlLord kernel shows earlier frimwoare FW-253-v4 not mine. Do you know which DoomLord kernel will work with my firmware?
Click to expand...
Click to collapse
That seems like quite an old doomkernel...
Make sure you're using v17r1 http://forum.xda-developers.com/showthread.php?t=2405925
Ok I did the v17r1 and now when it boots up it shows doomlord kernael and then continues to boot up to operating system. How do I get into recovery?
jimmydee62 said:
Ok I did the v17r1 and now when it boots up it shows doomlord kernael and then continues to boot up to operating system. How do I get into recovery?
Click to expand...
Click to collapse
press volume button while LED is i think purple? or orange? Once it lights up with a color, press a volume button, it'll change color a second later then boot into recovery.
TheTofu said:
press volume button while LED is i think purple? or orange? Once it lights up with a color, press a volume button, it'll change color a second later then boot into recovery.
Click to expand...
Click to collapse
Thanks for all your help worked like a champ. Tried it power up CWM recovery and power down TWRP recovery. Again thanks much the xperia zl is very different from all the other android smartphones I have had.
One other question I now have after installing the custom recovery is my Wi-Fi is no longer available. The doomlord kernel has made it non-usable. Any clues on how to fix this issue? I'm sorry for asking so many questions but like I said new to xperia zl.
I figured it out after I installed the doomlord kernel I then went back into CWM recovery and installed the whole zip file everything works. Any way thanks for your help without it I would have never been able to flash a rom. I'm now a very happy camper.
jimmydee62 said:
One other question I now have after installing the custom recovery is my Wi-Fi is no longer available. The doomlord kernel has made it non-usable. Any clues on how to fix this issue? I'm sorry for asking so many questions but like I said new to xperia zl.
I figured it out after I installed the doomlord kernel I then went back into CWM recovery and installed the whole zip file everything works. Any way thanks for your help without it I would have never been able to flash a rom. I'm now a very happy camper.
Click to expand...
Click to collapse
Do you mind helping me out i have the same problem as you. I am not sure where to put the files that are in the v17 zip. when i open them i see 3 folders and a boot.img. i have been using the flash tool up until this point. I am rooted and my bootloader is unlocked. I am just not sure how to flash the kernel so that i can get some type of recovery on y c6506 . any help would be helpful. I did a search and found this
[ how to install my kernel ] (via fastboot)
download the kernel package update.zip......i did this
save it on c:\ and extract the boot.img from the package....not sure what that means. does it just mean drag it to my deck top or something
save the boot.img to the folder containing fastboot binary....where is this folder?
flash the boot.img using fastboot:... i can use flash tool for this but when i click the lighting i check fastboot instead of flash
like i said any help would be great. And I will thank you

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