Hi there, just want to know
What is a kernel
Why do I need it
Which is the best for xperia z
How do I install it?
Short explanation: a kernel is the communication interface between software and hardware. If you haven't one, you can't use your phone.
There are custom kernels and stock kernels. Stock kernels are by SONY and they are not "something special". Custom Kernels are by devs(example from the xda forum).
With custom kernels you can for example overclock your cpu. Also you can save a bit of your battery life with some settings.
But for flash a custom kernel, you need to make a TA backup(to keep warranty), then unlock your bootloader.
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gripfly said:
Short explanation: a kernel is the communication interface between software and hardware. If you haven't one, you can't use your phone.
There are custom kernels and stock kernels. Stock kernels are by SONY and they are not "something special". Custom Kernels are by devs(example from the xda forum).
With custom kernels you can for example overclock your cpu. Also you can save a bit of your battery life with some settings.
But for flash a custom kernel, you need to make a TA backup(to keep warranty), then unlock your bootloader.
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But i have already unlocked my bootloader so my warranty is gone, even if I made a TA back up, is it?
Alepvn said:
But i have already unlocked my bootloader so my warranty is gone, even if I made a TA back up, is it?
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Yes. After unlocking bootloader we loose the drm keys, which are unique. So normally we have to save them with a TA backup.
SONY can check if they are available. But if you once have to send it to SONY, relock the bootloader and try it. "SONY is sometimes a bit lazy" and doesn't check if they are available. Some users also forgot to relock the bootlader and they repaired it.
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You need to backup it before unlocking operation.
Related
Got my hands over Xperia Z
was going through all the forums to root my device
doomlord 's way failed because the firmware i have is newer than what is been tested by Doomlord.
than i tried what i always do
ok I'm repeating myself this time on Xperia forum.
1) unlock bootloaders from sony's own site
2) flash Doomlords kernel for stock firmware which is with recovery
3) get into recovery and flash the zip attached
now you have super user and can install all that stuff needs root.
have a nice day!
And now you also have
1.Invalidate warranty
2.Bravia Engine 2 will not work anymore
3.Download music info, trackid... may also not work..
Doomlords way is fully working on locked bootloader you just need to downgeade kernel. If you have newer fw
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NetSkill said:
And now you also have
1.Invalidate warranty
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I doubt that for most of the countries
NetSkill said:
And now you also have
1.Invalidate warranty
2.Bravia Engine 2 will not work anymore
3.Download music info, trackid... may also not work..
Doomlords way is fully working on locked bootloader you just need to downgeade kernel. If you have newer fw
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Click to expand...
Click to collapse
1. Music Info works
2.And yes you're right dooms method works like a charm , no need to unlock bl just for rooting
@general: well it's obviously that you can root you device this way, because your bl unlocked. If you don't plan to use a custom kernel /rom you better root using doom's method.
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---------- Post added at 11:41 AM ---------- Previous post was at 11:40 AM ----------
hebbe said:
I doubt that for most of the countries
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Click to collapse
you will loose warranty
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Tommy-Geenexus said:
1. Music Info works
you will loose warranty
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not the warranty given by law!
hebbe said:
not the warranty given by law!
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Click to collapse
You get the warranty from sony, if they see you've unlocked bl they will charge you
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Nice post. Tx :thumbup:
Tommy-Geenexus said:
You get the warranty from sony, if they see you've unlocked bl they will charge you
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in germany it's like that: if you buy a new product, the law enforces the manufacturer/dealer to give a 2-year-warranty on the product. this 2-year-warranty can't be reduced or limited (normally).
the manufacturer/dealer might give an optional warranty for another X years, but that's up to him.
so sony might say that their additional, optional, voluntary warranty might get lost when unlocking the bootloader, but they cannot reject the warranty enforced by law. to do so, they will have to prove that unlocking the bootloader is definitely the cause for the devices' fault.
let's say the power button isn't working anymore, and the device is 1 year old, then sony can't reject only because of an unlocked bootloader. it will be very hard for them to plausible prove that unlocking the bootloader damaged the power button. if the device is, let's say, 3 years old, then they can reject.
at least in germany this is the case, and i guess in many other countries as well. in germany they distinguish between "gewährleistung" (warranty by law) and "garantie" (optional, voluntary warranty given by manuf./dealer).
(unfortunately, i don't know the proper english translation for the german words, and my translation app shows "warranty" in both cases.)
I read on these forums that even requesting B/L unlock code from Sony is sufficient grounds to deny warranty - whether you unlock or not
Sent from my C6603 using xda app-developers app
Easiest root ever is with program called KINGO ANDROID ROOT its only one click root. No need for kernel downgrada, i use it on official .67 firmware and it works like charm. I saw it somewhere on xda and download it its imba.
hebbe said:
in germany it's like that: if you buy a new product, the law enforces the manufacturer/dealer to give a 2-year-warranty on the product. this 2-year-warranty can't be reduced or limited (normally).
the manufacturer/dealer might give an optional warranty for another X years, but that's up to him.
so sony might say that their additional, optional, voluntary warranty might get lost when unlocking the bootloader, but they cannot reject the warranty enforced by law. to do so, they will have to prove that unlocking the bootloader is definitely the cause for the devices' fault.
let's say the power button isn't working anymore, and the device is 1 year old, then sony can't reject only because of an unlocked bootloader. it will be very hard for them to plausible prove that unlocking the bootloader damaged the power button. if the device is, let's say, 3 years old, then they can reject.
at least in germany this is the case, and i guess in many other countries as well. in germany they distinguish between "gewährleistung" (warranty by law) and "garantie" (optional, voluntary warranty given by manuf./dealer).
(unfortunately, i don't know the proper english translation for the german words, and my translation app shows "warranty" in both cases.)
Click to expand...
Click to collapse
ok thx didn't knew that
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NetSkill said:
2.Bravia Engine 2 will not work anymore
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Maybe my phone is retarded, but I unlocked bootloader without loosing drm keys (with BE2)
Could you tell my any reason for it, please?
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N1k0la89 said:
Easiest root ever is with program called KINGO ANDROID ROOT its only one click root. No need for kernel downgrada, i use it on official .67 firmware and it works like charm. I saw it somewhere on xda and download it its imba.
Click to expand...
Click to collapse
Kongo root has been removed from XDA because of malware or something.
Doomlords method is the one to use
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-woczarder- said:
Maybe my phone is retarded, but I unlocked bootloader without loosing drm keys (with BE2)
Could you tell my any reason for it, please?
Sent from my C6603 using xda app-developers app
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Thats impossible ..the BE2 option will be there still.. But u cant see any optimization on pics.
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NetSkill said:
Thats impossible ..the BE2 option will be there still.. But u cant see any optimization on pics.
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Somehow it is. I made some screenshots with be2 on and off - there is a difference. Running on DoomKernel
Sent from my C6603 using xda app-developers app
jacktackle said:
Got my hands over Xperia Z
was going through all the forums to root my device
doomlord 's way failed because the firmware i have is newer than what is been tested by Doomlord.
than i tried what i always do
ok I'm repeating myself this time on Xperia forum.
1) unlock bootloaders from sony's own site
2) flash Doomlords kernel for stock firmware which is with recovery
3) get into recovery and flash the zip attached
now you have super user and can install all that stuff needs root.
have a nice day!
Click to expand...
Click to collapse
Hi !
Unfortunately is not entirely true !!! Please update your correct title : " Easiest way to Root Xperia Z any firmware ( only for unlocked bootloader ! )"
Thanks !
Hi
i want to install Cyanogen Mod 11 Nightly on my Xperia Z. Last time i tried but it end in Failure. My Device is already rooted and have CWM and TWRP recovery. Please some one tell me Step by Step Instructions to install Cyanogenmod.
Note : I have locked Bootloader.
sriszone said:
Note : I have locked Bootloader.
Click to expand...
Click to collapse
This is the problem
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Tommy-Geenexus said:
This is the problem
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Thank you Bro... I will unlock it. I have another doubt, if i unlock the bootloader,can i get future updates like JB 4.3 and KK 4.4 from Sony?
sriszone said:
Thank you Bro... I will unlock it. I have another doubt, if i unlock the bootloader,can i get future updates like JB 4.3 and KK 4.4 from Sony?
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Click to collapse
Yes, but only via flashtool.
You can't use pc companion or seus anymore.
Also press thanx if i helped
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Tommy-Geenexus said:
Yes, but only via flashtool.
You can't use pc companion or seus anymore.
Also press thanx if i helped
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And if he flash back to stock and restore the TA? :victory:
Tommy-Geenexus said:
Yes, but only via flashtool.
You can't use pc companion or seus anymore.
Also press thanx if i helped
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Thanks Bro. If i relock bootloader again, can i update it via SEUS?
gripfly said:
And if he flash back to stock and restore the TA? :victory:
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Click to collapse
sriszone said:
Thanks Bro. If i relock bootloader again, can i update it via SEUS?
Click to expand...
Click to collapse
Then you will be able to update via seus, pc comanion and ota
Sent from my Xperia Z-back to stock
Tommy-Geenexus said:
Then you will be able to update via seus, pc comanion and ota
Sent from my Xperia Z-back to stock
Click to expand...
Click to collapse
So he only need to relock? Or does he have also to restore ta?
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gripfly said:
So he only need to relock? Or does he have also to restore ta?
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A relock should be enough,
TA is only for bravia engine.
Sent from my Xperia Z-back to stock
Tommy-Geenexus said:
A relock should be enough,
TA is only for bravia engine.
Sent from my Xperia Z-back to stock
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Click to collapse
I am so satisfied with your answers bro.... i already take a backup of TA partition contains DRM Keys. I know if i install Cyanogenmod , i will lose all sony related apps including Bravia Engine. My doubt is , if i relock and restore my DRM Keys , can i able to get my Bravia Engine Back? and please tell me a easy way to relock my Bootloader
sriszone said:
I am so satisfied with your answers bro.... i already take a backup of TA partition contains DRM Keys. I know if i install Cyanogenmod , i will lose all sony related apps including Bravia Engine. My doubt is , if i relock and restore my DRM Keys , can i able to get my Bravia Engine Back? and please tell me a easy way to relock my Bootloader
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=38124976
And yes, you get your Bravia back for sure.
Sent from my Xperia Z-back to stock
I meant following the unlock instructions from the Sony website.
I want to reinstall cyanogenmod/aokp and use CWM that cm came with this time!
Thanks!
mrjayviper said:
I meant following the unlock instructions from the Sony website.
I want to reinstall cyanogenmod/aokp and use CWM that cm came with this time!
Thanks!
Click to expand...
Click to collapse
Do you did a TA-Backup?
So you want the Link from us for cm11?
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gripfly said:
Do you did a TA-Backup?
So you want the Link from us for cm11?
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I did the ta backup.
I just want to know if I need to reunlock the device if I wanna install a AOSP-based custom ROM like CM/AOKP.
If you want to try a non-stock based ROM, you must have the bootloader unlocked.
Otherwise your phone won't boot. It's self-explanatory in the ROM's thread
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Hello XDA,
I have just purchased an Xperia Z1 and i'm loving it so far, I have just upgraded the phone to Android 4.4 OTA.
I would like to unlock the bootloader and flash a 4.4 Custom ROM, i got the phone with no warranty, so i will go through sony's official tool to unlock the bootloader.
As i will do that, do i still need to backup my TA partition? also i heard sometime ago that unlocking the bootloader through Sony's Website damages the Camera.
Is this still the case?
Thank you in advance.
Hi, you must downgrade to the 534 Firmware, then rooting and after that backup the TA Partition and after that flash an 4.4 ROM. if You finished you can unlock the Bootloader
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---------- Post added at 07:47 PM ---------- Previous post was at 07:46 PM ----------
Camera will work with unlocked Bootloader
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Do i still need to do that even though i'm okay with losing my warranty? (as if i have one anyway)
Yes only when you unlock your bootloader you will lose warranty
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Its your choice
If you are not bothered with the warrenty then there is no need to back up
Personally I notice no difference without the DRM keys
Can't i just unlock the bootloader through sony without backing up the TA and then using a custom rom and recovery?
Zizo950 said:
Can't i just unlock the bootloader through sony without backing up the TA and then using a custom rom and recovery?
Click to expand...
Click to collapse
yes you can
But if you ever want to use a warrenty then you will need to relock and put the TA back
If you are not bothered then there is no need to back it up
simple question: did someone send his/her xperia z1 to sony to repair something after he unlocked (and relocked, ta backup etc) this bootloader? can sony notice if the bootloader was unlocked?
If you unlocked the bootloader and didn't relock it, Sony can see the bootloader is open.
If you did TA backup and restore it for close the bootloader, Sony won't see it.
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HannibalSmith12 said:
If you unlocked the bootloader and didn't relock it, Sony can see the bootloader is open.
If you did TA backup and restore it for close the bootloader, Sony won't see it.
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but we had to give sony our imei so the could recognize which device was unlocked or am i wrong?
mo120697 said:
but we had to give sony our imei so the could recognize which device was unlocked or am i wrong?
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I don't think Sony saves the IMEI. It's just for create the unlock code.
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