Hi ALL!
as stated on topic just a "simple" question...
Why wasnt possible to flash any custom kernel on locked BL?
Since we can flash easly stock kernels with flashtool(in flash mode), why wasnt possible to build a custom kernel that was flashable like stock ones? No way to build a custom kernel that behaves like a stock one for flashtool?
Sorry for stupid question but really I can understand why kenrels was flashable only on unlocked BL...
Tuxedo75 said:
Hi ALL!
as stated on topic just a "simple" question...
Why wasnt possible to flash any custom kernel on locked BL?
Since we can flash easly stock kernels with flashtool(in flash mode), why wasnt possible to build a custom kernel that was flashable like stock ones? No way to build a custom kernel that behaves like a stock one for flashtool?
Sorry for stupid question but really I can understand why kenrels was flashable only on unlocked BL...
Click to expand...
Click to collapse
U need to unlock ur boot loader if u want to flash kernels... Otherwise i dont think it is possible
Mokiwipeout said:
U need to unlock ur boot loader if u want to flash kernels... Otherwise i dont think it is possible
Click to expand...
Click to collapse
Yes, I know that but my question was more precise...
Why wasnt possible to build a custom kernel that can be flashable like stock ones? I cant imagine why since Sony will build stock kernels noone else can do a stock-like flashable kernel...
Can you open a locked door without unlocking it with its key ?
No
So you can't flash custom kernel without unlocking bootloader,
Sent from my LT22i using xda premium
I think its because of signatures and stuff
Sony bootloader(locked one) can only boot when it confirms that the kernel is sony signed
while unlocked ones have no restrictions
One cannot simply sign a kernel with sony key right?
Thats the answer
@ilgreco112
I think that the jatinrungta statement was the key...
Since Sony firmwares was easly flashable why dont create a Sony-like firmware? Was forbidden?
Related
Hi,
In case anyone (like me) has issues installing the S1boot driver for your xperia, to be able to flash other firmware, here is the link :
http://forum.xda-developers.com/attachment.php?attachmentid=718060&d=1315877046
This driver will install itself after you run the executable file dpinst.exe after having extracted the archive.
With the driver you can use the flash tool (combined with your phone booted in flash mode (volume down + usb connect)) to flash other firmware on the phone.
P.S. i'm not talking about fastboot mode, but "flash mode" ;-)
Br.
Michel
a question sir
Do I need to unlock the bootloader first before flashing?
And do u use Cyanogen or Miui?
thanks!
yujin_11 said:
a question sir
Do I need to unlock the bootloader first before flashing?
And do u use Cyanogen or Miui?
thanks!
Click to expand...
Click to collapse
i dont think you have to unlock the bootloader to flash your phone, you have to enable usb debugging in your phone ,settings>applications>development>usb debugging
pls correct me if im wrong
Hi,
As far as I know you "have" to unlock the bootloader before being able to flash custom firmware on the Phone.
I unlocked the bootloader via the sonyericsson site link :
http://unlockbootloader.sonyericsson.com/
I use 4pda.ru firmware+kernel from this thread :
http://forum.xda-developers.com/showthread.php?t=1424121
Reason I dont use CM or MIUI is that I need a 100% functional phone (both corporate and private usage, that's why) . I encourage the development on CM and MIUI, don't get me wrong here
You can find more information about unlocking, rooting and flashing custom kernels and firmware on this XDA forum.
Br.
Michel
vleutmans said:
Hi,
As far as I know you "have" to unlock the bootloader before being able to flash custom firmware on the Phone.
I unlocked the bootloader via the sonyericsson site link :
http://unlockbootloader.sonyericsson.com/
I use 4pda.ru firmware+kernel from this thread :
http://forum.xda-developers.com/showthread.php?t=1424121
Reason I dont use CM or MIUI is that I need a 100% functional phone (both corporate and private usage, that's why) . I encourage the development on CM and MIUI, don't get me wrong here
You can find more information about unlocking, rooting and flashing custom kernels and firmware on this XDA forum.
Br.
Michel
Click to expand...
Click to collapse
how about flashing through CWM recovery like the previous xperia? is it any different? because before the msm7227 and qsd8250 bootloader been unlocked, people use CWM recovery to flash rite?
syin16 said:
how about flashing through CWM recovery like the previous xperia? is it any different? because before the msm7227 and qsd8250 bootloader been unlocked, people use CWM recovery to flash rite?
Click to expand...
Click to collapse
.well I don't know if you can flash another Rom without the boot loader being unlocked. Anybody?
vleutmans said:
.well I don't know if you can flash another Rom without the boot loader being unlocked. Anybody?
Click to expand...
Click to collapse
You can setup CWM and flash ROM on unlocked device, but you can't flash kernel and baseband.
So current situation is: you can't flash CM or MIUI (which requires their own kernels) on unlocked device, but you can flash stock-based mods like repack4pda (which works with stock kernels).
ImmortAlex said:
You can setup CWM and flash ROM on unlocked device, but you can't flash kernel and baseband.
So current situation is: you can't flash CM or MIUI (which requires their own kernels) on unlocked device, but you can flash stock-based mods like repack4pda (which works with stock kernels).
Click to expand...
Click to collapse
You both mean locked right?
Guys, i have Xperia Sola ICS stock rom with root. I downloaded GB 184 for sola.
1. Can i downgrade to GB without unlocking bootloader? (with flash tool for example)
2. Can i flash custom ROM on my sola wihtout unlocking bootloader? (with some software)
And if so can someone guide me to how can i do it, thread may be?
Thank you
mirost1 said:
Guys, i have Xperia Sola ICS stock rom with root. I downloaded GB 184 for sola.
1. Can i downgrade to GB without unlocking bootloader? (with flash tool for example)
2. Can i flash custom ROM on my sola wihtout unlocking bootloader? (with some software)
And if so can someone guide me to how can i do it, thread may be?
Thank you
Click to expand...
Click to collapse
1. Yes u can, with GB ftf file.
2. If u think on ROMs like CyanogenMod ROM answer is no, u must first unlock ur BL.
1. Of course u can, just download the file and flash it with flashtool
2. Some custom rom need unlock bootloaders to be installed, but another rom no need that.
I think if u want to install more custom rom, mod, root and etc, unlock bl is the best way
Sent from my ST25i using xda app-developers app
Guys, thank you very much. I succesfully downgraded to GB official stock ROM.
Now my last but very important question is - i dont like GB and i still dont like ICS (i downgraded only because of better battery life in GB), but i want to test some custom ROM (like AOKP rom posted in Sola section).
As much as i red i can not flash this ROM without unlocking the bootloader and installing CWM on my phone, is that right?
Actually the question i wanted to ask was - if i unlock bootloader can i flash custom rom with Flash Tool or i can flash only with CWM (which i dont know but i dont want to use)?
mirost1 said:
Actually the question i wanted to ask was - if i unlock bootloader can i flash custom rom with Flash Tool or i can flash only with CWM (which i dont know but i dont want to use)?
Click to expand...
Click to collapse
U can flash custom ROMs ftf files via Flashtool, for zip files u will need CWM.
Sent from my LT22i using xda app-developers app
Hi, I know the update 4.1.b.0.587 it's out, and I want to update my mini pro, but I'm stuck on .431 so anybody knows how can I update my SK17A because I tried with SEUS, and it says I already have the last update, PC companion say's the same thing, so if someone could help me that will be perfect..I have the mini pro SK17A not the SK17I
At the moment,4.1.b.0.587 is out only for Sk17i i guess.
Sk17a is till .431 as of now.
Have you seen someone using an sk17a with .587?
http://naw32fsystem.blogspot.in/2012/09/all-xperia-2011-official-stock-firmware.html
Look in the thread by expeacer & thank him :good:
http://forum.xda-developers.com/showthread.php?t=1902920
Cheers. =D
XxStatiX said:
At the moment,4.1.b.0.587 is out only for Sk17i i guess.
Sk17a is till .431 as of now.
Have you seen someone using an sk17a with .587?
http://naw32fsystem.blogspot.in/2012/09/all-xperia-2011-official-stock-firmware.html
Click to expand...
Click to collapse
not really, but i dind't know that the sk17i was that different from the sk17a that's to bad, but i guess i should wait then
i guess i'm gonna forget about that update for know, so i have another question, and i hope someone could help me..as i have an stock rom, android 4.0.4, with stock kernel, compilation .431, no root, no unlocked bootloader, no nothing actually xD so my question is, my phone with ICS is a little slow, mostly on games, and i would like to know is what i need to do to solve that? i read on other threads that flashing a different kernel can fix that, it's that true? and besides, can i flash an custom kernel having an stock rom? how can i do that? i guess i need root on my phone first, i can do that, but i need to unlock the bootloader? that i don't want to do it
a stands for america!
And i is the international version!
That's what ive heard!
Idk what the differences are though
seleu said:
i guess i'm gonna forget about that update for know, so i have another question, and i hope someone could help me..as i have an stock rom, android 4.0.4, with stock kernel, compilation .431, no root, no unlocked bootloader, no nothing actually xD so my question is, my phone with ICS is a little slow, mostly on games, and i would like to know is what i need to do to solve that? i read on other threads that flashing a different kernel can fix that, it's that true? and besides, can i flash an custom kernel having an stock rom? how can i do that? i guess i need root on my phone first, i can do that, but i need to unlock the bootloader? that i don't want to do it
Click to expand...
Click to collapse
Yes custom rom/kernel will make ur phone smooth in every way. But for trying custom kernel u need boot loader unlocked.But u can try custom rom without unlocking boot loader if u have rooted :good:
saqib nazm said:
Yes custom rom/kernel will make ur phone smooth in every way. But for trying custom kernel u need boot loader unlocked.But u can try custom rom without unlocking boot loader if u have rooted :good:
Click to expand...
Click to collapse
Thanks! But i was talking about having stock rom with custom kernel, or do i need both for make it work better?..besides, the reason i haven't rooted my phone and unlocked the bootloader is becauses is to hard! XD i remember when i used to have a motorola milestone, you just need to install the app universal androot, or use superone click, and that's it, you have your phone rooted, but know it's to difficult, i have a galaxy nexus too, i recently root that one, and it wasn't easy either but i did it, but with this one, the xperia mini, it looks like having root and unlock the bootloader it's no for everyone
After rooting,when I'm on cyanogenmod9 on ics,I can overclock to 1.6 ghz too while gaming.no lag in using phone too.though my bootloader is unlocked. I would suggest you to root for a better experience!
Cheers.
seleu said:
Thanks! But i was talking about having stock rom with custom kernel, or do i need both for make it work better?..besides, the reason i haven't rooted my phone and unlocked the bootloader is becauses is to hard! XD i remember when i used to have a motorola milestone, you just need to install the app universal androot, or use superone click, and that's it, you have your phone rooted, but know it's to difficult, i have a galaxy nexus too, i recently root that one, and it wasn't easy either but i did it, but with this one, the xperia mini, it looks like having root and unlock the bootloader it's no for everyone
Click to expand...
Click to collapse
U must unlock bootloader to use custom kernel even u use with stock rom.just unlock ur bootloader its not that tough.the easiest way to root after that just flash a custom kernel which is pre-rooted( like rage kernel & many) via flashtool.u will have root access
Sent from my Xperia Live With Walkman using xda app-developers app
saqib nazm said:
U must unlock bootloader to use custom kernel even u use with stock rom.just unlock ur bootloader its not that tough.the easiest way to root after that just flash a custom kernel which is pre-rooted( like rage kernel & many) via flashtool.u will have root access
Sent from my Xperia Live With Walkman using xda app-developers app
Click to expand...
Click to collapse
Umm, so all i need to do is unlock the bootloader? Well i guess i can give it a try, thanks!
seleu said:
i guess i'm gonna forget about that update for know, so i have another question, and i hope someone could help me..as i have an stock rom, android 4.0.4, with stock kernel, compilation .431, no root, no unlocked bootloader, no nothing actually xD so my question is, my phone with ICS is a little slow, mostly on games, and i would like to know is what i need to do to solve that? i read on other threads that flashing a different kernel can fix that, it's that true? and besides, can i flash an custom kernel having an stock rom? how can i do that? i guess i need root on my phone first, i can do that, but i need to unlock the bootloader? that i don't want to do it
Click to expand...
Click to collapse
To flash custom kernel you need unlocked bootloader, but for flashing custom ROM you need root and/or unlocked bootloader. Mostly of the ROMs work on locked bootloader too but if you want to play games so much you should Install Pure AOSP/AOKP based ROM and if you want best experience with games you should also install custom kernel.
seleu said:
Umm, so all i need to do is unlock the bootloader? Well i guess i can give it a try, thanks!
Click to expand...
Click to collapse
Here brother,the sticky guide on unlocking your bootloader.
Its a little long,but easy! http://forum.xda-developers.com/showthread.php?t=1879750
Its worth it!
:good:
Hello
I have a few questions about the hole "thing" cause this is my first android phone and on apple there was just the option jailbreaked or not jailbreaked
My first question is about the bootloader.
since i was reading the thread "[FULL ROOT] Community RootKit! (ASEC vulnerability) {v01} [20140615]" i am asking me why should i unlock my bootloader when im able to get root without doing this?
Is there any special point for wich i need the unlocked bootloader or is it just written for the people who unlocked there bootloader already?
Then to second question is about the sequence.
Am i right when i
1. get root
2. install cwm or twrp
3. install custom rom?
by the way: is there any huge difference between twrp and cwm? because at the table "Kernels" there is the TWRP for the Xperia T2 Ultra and an unofficial version and from CMW is an unofficial version too? Wich should i use?
and my last question is should i wait for version 2 of the RootKit or are there just small differences?
Scarpall said:
Hello
I have a few questions about the hole "thing" cause this is my first android phone and on apple there was just the option jailbreaked or not jailbreaked
My first question is about the bootloader.
since i was reading the thread "[FULL ROOT] Community RootKit! (ASEC vulnerability) {v01} [20140615]" i am asking me why should i unlock my bootloader when im able to get root without doing this?
Is there any special point for wich i need the unlocked bootloader or is it just written for the people who unlocked there bootloader already?
Then to second question is about the sequence.
Am i right when i
1. get root
2. install cwm or twrp
3. install custom rom?
by the way: is there any huge difference between twrp and cwm? because at the table "Kernels" there is the TWRP for the Xperia T2 Ultra and an unofficial version and from CMW is an unofficial version too? Wich should i use?
and my last question is should i wait for version 2 of the RootKit or are there just small differences?
Click to expand...
Click to collapse
Bootloader unlock is required to install Custom kernels like DOOMLORDS kernel. In case if you dont want that then no need to unlock BL.
Just follow this post http://forum.xda-developers.com/showthread.php?t=2784757 to get root on Locked Bl and then revert back to .402
manu44 said:
Bootloader unlock is required to install Custom kernels like DOOMLORDS kernel. In case if you dont want that then no need to unlock BL.
Just follow this post http://forum.xda-developers.com/showthread.php?t=2784757 to get root on Locked Bl and then revert back to .402
Click to expand...
Click to collapse
hi manu44,
first thank you for the answer.
but it is possible to root and use an custom rom with an locked bootloader or?
is there a away to do it step per step?
i mean first root with rootkit, then later install an custom rom ? or do i need to do it all at one time ?
Scarpall said:
hi manu44,
first thank you for the answer.
but it is possible to root and use an custom rom with an locked bootloader or?
is there a away to do it step per step?
i mean first root with rootkit, then later install an custom rom ? or do i need to do it all at one time ?
Click to expand...
Click to collapse
A custom ROM is different from a custom kernel. Some custom ROMs do not require custom kernels (because they use stock kernel), but others do. So it really depends on the custom ROM that you want to use. Instructions and requirements will be posted in the respective ROM thread.
But if you want to use a custom kernel, then you will need to unlock the bootloader first.
And obviously, if you want to flash a custom ROM that needs custom kernel, then you will have to unlock your bootloader first.
Even if you want to flash a custom ROM that does not require a custom kernel, you need to first root the phone with the RootKit. Because flashing custom ROMs is usually done via recovery, and recovery installation requires root.
Hope the above is not too confusing.
hush66 said:
A custom ROM is different from a custom kernel. Some custom ROMs do not require custom kernels (because they use stock kernel), but others do. So it really depends on the custom ROM that you want to use. Instructions and requirements will be posted in the respective ROM thread.
But if you want to use a custom kernel, then you will need to unlock the bootloader first.
And obviously, if you want to flash a custom ROM that needs custom kernel, then you will have to unlock your bootloader first.
Even if you want to flash a custom ROM that does not require a custom kernel, you need to first root the phone with the RootKit. Because flashing custom ROMs is usually done via recovery, and recovery installation requires root.
Hope the above is not too confusing.
Click to expand...
Click to collapse
Thank you
So just to be sure.
I Run the toolkit for root
Then i take twrp or cwm
And then i flash a custom Rom wich use stock kernel
And that can i do with a locked bootloader?
What can be different in an other kernel?
Scarpall said:
Thank you
So just to be sure.
I Run the toolkit for root
Then i take twrp or cwm
And then i flash a custom Rom wich use stock kernel
And that can i do with a locked bootloader?
What can be different in an other kernel?
Click to expand...
Click to collapse
Yes, run Rootkit, install recovery (TWRP/CWM) and then you can flash custom ROM which uses stock kernel.
Custom kernels allow functions such as overclocking, undervolting, etc.
hush66 said:
Yes, run Rootkit, install recovery (TWRP/CWM) and then you can flash custom ROM which uses stock kernel.
Custom kernels allow functions such as overclocking, undervolting, etc.
Click to expand...
Click to collapse
Big thanks to you
Now i know that i can keep my bootloader locked.
Take note that by modifying your device you warrenty is voided and you can posibly brick your device
(brick meaning dead phone) aka brick
For any info aditional info you can go here
http://forum.xda-developers.com/showthread.php?t=2775411
Later ill update the thread to add better/new info which i forgot
Sent from my D6503 using XDA Premium 4 mobile app
Scarpall said:
Big thanks to you
Now i know that i can keep my bootloader locked.
Click to expand...
Click to collapse
Or you can use the toolkit on .55/.69
Then follow Nuts thread and http://forum.xda-developers.com/showthread.php?t=2784757
this would bring you back to .402 and have recovery installed by default on Locked bootloader
manu44 said:
Or you can use the toolkit on .55/.69
Then follow Nuts thread and http://forum.xda-developers.com/showthread.php?t=2784757
this would bring you back to .402 and have recovery installed by default on Locked bootloader
Click to expand...
Click to collapse
then i have 2 new questions
1. How can i downgrade my phone ? just download the fw and use flashtool?
got an iphone till now and there it was a hard work to do it ..
2. is there any difference between locked and uinlocked bootloader? i mean in the point of restoring so that i have my warranty back?
1. There's now an even easier way to root the 402 firmware that does not require you to downgrade first:
http://forum.xda-developers.com/showthread.php?t=2784900
But note this post, where you have to change something in the install.bat file for it to work on the Z2:
http://forum.xda-developers.com/showpost.php?p=53480221&postcount=81
2. It's a little more work if your bootloader is unlocked and you want to relock it before sending it to the service centre. You need to have your TA backup before doing so. If your bootloader is locked, you just have to remove root via SuperSU before sending it in for service.
Hello,
I don't know that much about android developmment, but as bootloader unlock is not possible anymore, would it be possible to build a ROM wich would be custom BUT comaptible with the stock bootloader and the stock kernel ?
Thanks a lot
Cryomichel said:
Hello,
I don't know that much about android developmment, but as bootloader unlock is not possible anymore, would it be possible to build a ROM wich would be custom BUT comaptible with the stock bootloader and the stock kernel ?
Thanks a lot
Click to expand...
Click to collapse
It's not possible, since the bootloader is locked you can't even flash a rom.