[Q] script clonar a memoria interna. Restaurar o sistema .

I have an Android s710i MT6516 - Delete the Launcher and then did a clean rom and kernel, now I want to -
script clone the internal memory. for System Restore.

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I'm using these commands in the update.
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updater-script
package_extract_file("busybox", "/tmp/busybox");set_perm(0, 0, 0777, "/tmp/busybox");
run_program("/tmp/busybox", "mkdir sdcard/carlos");ui_print("ok...");
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The script appears normal and runs until the ui_print.
But the folder and not created. Course and a test and then execute the command.
dd if = / dev / ... of = / sdcard / ..iso
Someone has a way I run the update alert by busybox? :D