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I would like to install a Custom ROM in my Xperia J and its named AVD ROM. To install that ROM do I have to install the ICS first or no need?

Please help me. thank you.

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If your device is rooted/unlocked, and you already use a custom recovery (like or ), there's no need to downgrade first. the will either replace the complete system, regardless of the installed version: usually, the images contain complete "disk images" for all relevant partitions.

If, on the other hand, your device is not rooted, and there doesn't exist any solution for the currently installed Android version, but only for ICS: then yes, you might need to downgrade so you can gain access to your device, and flash a custom .

On some devices it might be sufficient to simply unlock the bootloader in order to install a custom recovery or flash a custom rom. If that applies to your device, I must leave for someone else to answer.

  • May I keep the stock kernel or must have to install new kernel ? – rɑːdʒɑ Dec 11 '13 at 12:35
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    The kernel is part of the image, so you won't keep it either: the custom ROM will bring its own. – Izzy Dec 11 '13 at 12:43
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Not necessary...

No need to downgrade...

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