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[HELP] Creating pre-rooted flashable firmware from .ftf

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Cool [HELP] Creating pre-rooted flashable firmware from .ftf

Can anyone tell me how to creating pre-rooted flashable firmware from .ftf file?
I've try this
but I struck at step 7.type aIUP.exe system.sin 4096 system
I try to change 4096 to 2048 , 8192 even 16384 but still can't extract.
Please help me. Tell me how to creating pre-rooted flashable firmware from .ftf file.

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No need for any of that in the thread you linked, just use flashtool to extract the system.

Use the link above.

How to get root on Xperia Z1 with KitKat 4.4.2, 4.4.3 & 4.4.4

If you are unsure, then read this.
If you are still unsure, watch this.


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