Please help me to Install jellybean rom on xperia u

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xperia anfer

Senior Member
Dec 7, 2013
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i think i need to unlock my bootloader and root to install jellybean rom on xperia u,i know how to unlock my bootloader.i would like to install DevSwift1 rom on my xperia u,instruction said that ,"first flash experimental kernel http://xdaforums.com/show....php?t=2326515

1)by flashing the experimental kernel ,will it root and install CWM recovery on my phone ?

2) every Jb install tutorial showing after flashing the experimental kernel ,extract the JB rom `zip and flash the kernel.ftf file by fastboot mode,but their is no kernel in the rom,but their is boot file...?(not boot.image file their is only a boot file and few other files)

3)does this mean i have to first flash the experimental kernel and i have to flash the kernel.ftf or the boot.image in the rom ?

4)i am very confuse could some one answer this questions and give me a step by step guide please don`t say just flash ,tell me like eg:-fastboot mode >select kernel to flash

SORRY FOR MY ENGLISH ,IF YOU CAN`T UNDERSTAND PLEASE ASK ME .........
 

xperia anfer

Senior Member
Dec 7, 2013
73
6
Do you have rooted phone and unlocked bootloader?

If yes then you flash experimental kernel and follow instructions.
i thought i know how to unlock my bootloader but i think it didn`t work,i unlock my bootloader via flashtool and it complete without a error but i don`t think it works ,because sony pc companion still recognize my phone.........!!!!! please help i cant understand the other bootloader unlocking methode thats why use the flashtool...........!!!! but i flash the experimental kernel and i able to go in to the CWM Recovery ......!!! somebody pleas help me

did i correctly unlock my bootloader or i still have a lock bootloader ?

their is many people here but no one to help me,i know this is not a very complicated thing to the XDA members but it is complicated to me ,don`t ignore me
 

xperia anfer

Senior Member
Dec 7, 2013
73
6
Last edited:

asd987

Member
Jun 25, 2012
42
13
Maribor
I connect my phone to pc companion and it is recognize. I have installed CM11 on my phone, so I think your bootloader is unlocked.

So then you flash experimental kernel and then wipe cache/data/dalvik cache and flash zip.

Press thanks if I helped you ;)
 

xperia anfer

Senior Member
Dec 7, 2013
73
6
I connect my phone to pc companion and it is recognize. I have installed CM11 on my phone, so I think your bootloader is unlocked.

So then you flash experimental kernel and then wipe cache/data/dalvik cache and flash zip.

Press thanks if I helped you ;)
hmm ,can you help me to install jb rom on xperia U,

after flash experimental kernel, do i need to unzip the rom (DevSwift1 `s Jellybean rom) file and flash the kernel.elf or the boot.image ?
 
Last edited:

asd987

Member
Jun 25, 2012
42
13
Maribor
hmm ,can you help me to install jb rom on xperia U,

after flash experimental kernel, do i need to unzip the rom (DevSwift1 `s Jellybean rom) file and flash the kernel.elf or the boot.image ?

No, go to cwm recovery and do full wipe (cache, data, dalvik-cache) and then choose install zip from sdcard and install rom zip (don't unzip before).
 
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xperia anfer

Senior Member
Dec 7, 2013
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No, go to cwm and and do full wipe (cache, data, dalvik-cache) and then choose install zip from sdcard and install rom zip (don't unzip before).

thanks ,I ask that question because of this http://www.youtube.com/watch?v=38Uw...dTRFN0sPvYjlmf-6yQ8KDv&feature=c4-overview-vl ,if you have time please watch this .......!!!!

are this steps correct ?

1)unlock the bootloader
2) flash experimental kernel(unzip the kernel file and flash the boot.image via fastboot)- """will flash experimental kernel,root and install CWM recover ?
3)full wipe (cache, data, dalvik-cache)
4) flash rom via CWM
5)reboot to system
 

asd987

Member
Jun 25, 2012
42
13
Maribor
thanks ,I ask that question because of this http://www.youtube.com/watch?v=38Uw...dTRFN0sPvYjlmf-6yQ8KDv&feature=c4-overview-vl ,if you have time please watch this .......!!!!

are this steps correct ?

1)unlock the bootloader
2) flash experimental kernel(unzip the kernel file and flash the boot.image via fastboot)- """will flash experimental kernel,root and install CWM recover ?
3)full wipe (cache, data, dalvik-cache)
4) flash rom via CWM
5)reboot to system

between 1 and 2 steps you must root your phone. To do this follow this: http://xdaforums.com/xperia-u/u-development/ics-noob-proof-root-via-flashtool-t1933985

2) you don't need unzip the kernel.elf, just move rom zip to the phone. In this video that you add he use kernel.elf, but you can use experimental kernel (has many features like overclocking so you can use this kernel) and flash like he done for kernel.elf

Then just follow instructions on your video ;)
 
Last edited:

xperia anfer

Senior Member
Dec 7, 2013
73
6
between 1 and 2 steps you must root your phone. To do this follow this: http://xdaforums.com/xperia-u/u-development/ics-noob-proof-root-via-flashtool-t1933985

2) you don't need unzip the kernel.elf, just move rom zip to the phone. In this video that you add he use kernel.elf, but you can use experimental kernel (has many features like overclocking so you can use this kernel) and flash like he done for kernel.elf

Then just follow instructions on your video ;)

no i said "flash experimental kernel(unzip the kernel file and flash the boot.image via fastboot)" only for the flashing experimental kernel,i agree with you i should not unzip the rom file.....!!!
that video he unzip the rom file and flash a file and then he install the rom via CWM recovery,1st part of that video(i gave you the, link for the 2nd part) he flash experimental kernel,thats why ask you do that questions
i give you the both link and then you understand what i am saying and what i am confuse about ,please watch and reply soon....!!!

1st part - http://www.youtube.com/watch?v=V232...dTRFN0sPvYjlmf-6yQ8KDv&feature=c4-overview-vl

2nd part - http://www.youtube.com/watch?v=38Uw...dTRFN0sPvYjlmf-6yQ8KDv&feature=c4-overview-vl
 
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asd987

Member
Jun 25, 2012
42
13
Maribor
no i said "flash experimental kernel(unzip the kernel file and flash the boot.image via fastboot)" only for the flashing experimental kernel,i agree with you i should not unzip the rom file.....!!!
that video he unzip the rom file and flash a file and then he install the rom via CWM recovery,1st part of that video(i gave you the, link for the 2nd part) he flash experimental kernel,thats why ask you do that questions
i give you the both link and then you understand what i am saying and what i am confuse about ,please watch and reply soon....!!!

1st part - http://www.youtube.com/watch?v=V232...dTRFN0sPvYjlmf-6yQ8KDv&feature=c4-overview-vl

2nd part - http://www.youtube.com/watch?v=38Uw...dTRFN0sPvYjlmf-6yQ8KDv&feature=c4-overview-vl

when you rooted phone (follow my link) flash this kernel http://xdaforums.com/xperia-u/u-development/kernel-experimental-v11c-t2326515 with flashtool. you don't need flash kernel.elf, because you flash experimental kernel.

then just go to cwm and follow instructions
 

xperia anfer

Senior Member
Dec 7, 2013
73
6
when you rooted phone (follow my link) flash this kernel http://xdaforums.com/xperia-u/u-development/kernel-experimental-v11c-t2326515 with flashtool. you don't need flash kernel.elf, because you flash experimental kernel.

then just go to cwm and follow instructions

Thanks for your help.. you help me a lot ,just one last question are you saying that ,
" flashing experimental kernel will not root my phone ?
i am on 6.1.1.b.1.54 firmware so this version can not flash via flashtool but i found another way......thanks for your time ,i think you understand my reason for the confuse after watching the those videos....
i am not saying that you don`t know about this, but ,,.I am creating a new thread about " my bootloader unlocked or locked ? "because i have a small doubt about that" ( from my knowledge after bootloader unlocked, pc companion will not recognize my phone,that`s why we can not get sony officail updates via pc companion "after" unlocking the bootloader)

once againg thanks please answer my last question ?
 

asd987

Member
Jun 25, 2012
42
13
Maribor
Thanks for your help.. you help me a lot ,just one last question are you saying that ,
" flashing experimental kernel will not root my phone ?
i am on 6.1.1.b.1.54 firmware so this version can not flash via flashtool but i found another way......thanks for your time ,i think you understand my reason for the confuse after watching the those videos....
i am not saying that you don`t know about this, but ,,.I am creating a new thread about " my bootloader unlocked or locked ? "because i have a small doubt about that" ( from my knowledge after bootloader unlocked, pc companion will not recognize my phone,that`s why we can not get sony officail updates via pc companion "after" unlocking the bootloader)

once againg thanks please answer my last question ?

Answer on your question :No it will not

if you have doubt if you have unlocked bootloader try again. i think this will help you: http://xdaforums.com/xperia-u/issues/guide-beginners-how-to-unlock-t1971363

I didn't know that you have b.1.54 firmware
To root you must first flash B.1.10 kernel here: http://www.4shared.com/file/LcgUNFYl/Xperia_U_ICS_404_kernel_nu.html
Than root wtih these http://xdaforums.com/xperia-u/u-development/ics-noob-proof-root-via-flashtool-t1933985
Than flash b.1.54 kernel here: http://www.4shared.com/file/ob4lM4PB/xperia_u_611B154_World_kernel.html

to istall jeally bean only flash experimental kernel:http://xdaforums.com/xperia-u/u-development/kernel-experimental-v11c-t2326515 and copy rom zip to phone. you don't neeed to have rooted phone.

Then go to cwm and follow instruction to flash rom

I hope i help you and sorry for my bad english ;)
 
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xperia anfer

Senior Member
Dec 7, 2013
73
6
Answer on your question :No it will not

if you have doubt if you have unlocked bootloader try again. i think this will help you: http://xdaforums.com/xperia-u/issues/guide-beginners-how-to-unlock-t1971363

I didn't know that you have b.1.54 firmware
To root you must first flash B.1.10 kernel here: http://www.4shared.com/file/LcgUNFYl/Xperia_U_ICS_404_kernel_nu.html
Than root wtih these http://xdaforums.com/xperia-u/u-development/ics-noob-proof-root-via-flashtool-t1933985
Than flash b.1.54 kernel here: http://www.4shared.com/file/ob4lM4PB/xperia_u_611B154_World_kernel.html

to istall jeally bean only flash experimental kernel:http://xdaforums.com/xperia-u/u-development/kernel-experimental-v11c-t2326515 and copy rom zip to phone. you don't neeed to have rooted phone.

Then go to cwm and follow instruction to flash rom

I hope i help you and sorry for my bad english ;)

("if you have doubt if you have unlocked bootloader try again. i think this will help you: http://xdaforums.com/xperia-u/issues/guide-beginners-how-to-unlock-t1971363")

i follow this steps i want to find it works or not ???
 

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