Reinstalling Android after mobile has been erased by DBAN? I was curious if a Android mobile is erased using DBAN, then can the Android be reinstalled on the mobile or it becomes useless ?
As the question already is answered with the line of comments to it, I'll take the freedom to sum up the details to make them easier to find:
What is DBAN?
My first point was that I never heard of DBAN before, so I had to look it up. Luckily, my first hit was Wikipedia (which article I linked here), and it answered this question quite compactly:

The program is designed to securely erase a hard disk until data is permanently removed and no longer recoverable, which is achieved by overwriting the data with pseudorandom numbers generated by Mersenne twister or ISAAC.

So we are not talking about some &quot;remote attack&quot; destroying your device, but a willful wiping of the &quot;drives&quot;.
What could DBAN wipe on an Android device?
This question was answered by eldarerathis and GAThrawn in the comments: Unless there is an Android version of DBAN which can be executed directly on the device, DBAN is limited to the SD-Card and internal storage (the storage devices offered to the computer via UMS). It cannot access e.g. the /system partition for two reasons: 1) it is not made available via UMS, and 2) it is mounted read-only (unless the device is rooted, and you explicitely mounted it read-write -- which cannot be done without rooting). Similar reason (not made available via UMS) applies to all other partitions.
So what about restoring the Android system?
Nothing. No need for this. As described in the previous section, DBAN at maximum can access two of the data partitions. But it cannot access /system (where the Android system resides), /boot (where Android is bootet from), or even /data (where your apps and their data reside). Since nothing is lost from the Android System itself -- there simply is nothing to restore, it's all still there.