How to preroot fimeware?

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Could anyone please tell me how to preroot firmware for an xperia u? There isnt much support for it here and I thought it would be best if I do it myself when new updates comes out.

If you want to flash prerooted firmware you need to have unlocked bootloader.

If you have locked bootloader wait until root solution appears.

For more info about bootloader go here -http://forum.xda-developers.com/showthread.php?t=1527159-

Hi all,
download link for 184 kernel with autoroot and recovery: dl.dropbox.com/u/1562739/kernel.elf

credits to KeiranFTW,nickholtus, K900, championswimmer

thanks for that but could you also explain how you create a rooted kernal? I already have bootloader unlocked.

you must unpack the kernel, edit the ramdisk and repack it. For do that can you use the championswimmer kitchen

sorry if im being annoying, but what part exactly do I edit?

You can extract the ramdisk from a kernel with root and recovery and repack that ramdisk with new kernel

thanks will try that today when I get back from work.

Is this a rooted kernel? I have the superuser app right there but all requests got denied no matter I set it to allow or prompt requests, it always get denied!!

Sent from my ST25i using xda app-developers app

Why this topic in dev section?

Sent from my ST25i using xda app-developers app