How to update android version into Jelly Bean in Xperia U

Shichiro said:

Here's the details of my phone.

Model Number: ST25i
Android Version: 4.0.4 (Ice cream sandwich)
Baseband version: u8500-49020908
Kernel Version: 3.0.8+ BuildUser@BuildHost #1 SMP PREEMPT Mon Oct 15 14:57:07 2012
Build Number: 6.1.1.B.1.54

I'm newbie so I need a step by step tutorial. Including working download links etc.

If you still need something, feel free to post here in my thread or PM me boss.

I appreciate your help. Please!

Thanks!

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Shichiro said:

I can't make that one work. After flashing kernel, it's not booting into the phone now. Just the logo and after that It's all black.

Any video on how to make that work?
Or can you teach me here? I don't really know if i'll extract it or not. That's why I need a step by step process

Thank you!

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Shichiro said:

The author said to "flash kernel"

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Shichiro said:

I did as what he said. Did I skip something?

Well, you obviousely did. Custom kernels are only possible to flash if the bootloader is unlocked.
Uhm. My bootloader is already unlocked sir. But incase it still is locked, how do I know if it's locked or unlocked?
I already know how to unlock it but how to know if it's locked or unlocked?

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How can you know how to unlock if you don't know how to check if it's locked.
in dialer type *#*#7378432#*#*, click service info, click configuration.
If rooting status is "bootloader unlocked: yes", it is locked, if it's "bootloader unlock allowed: yes(or no)" then it's not.

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Shichiro said:

ChikeD said:

Not because I know how to unlock it means that I know how to check if it's locked or not.

I simply followed the steps here - http://talk.sonymobile.com/t5/Xperi...rooting-Xperia-U-wilth-custom-rom/td-p/223263 few days ago.

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Have u updated ur phone to jellybean
if not,ask any required help

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