[Q] broker superuser, cant unroot to fix

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I am on a stock asus transformer prime 4.0.3 rooted with sparkyroot app. When I try to use sparkyroot to unroot it says permission denied and when I try to use the superuser app to update my su binary it also says permission denied. I am unsure of how to proceed to fix this, thank you for any help

use blob downgrade, then retry.

Probably sent through one of those little windows in AOKP cornerstone for my tf9001.

What version should I downgrade too?

Don't matter as long as it's ICS. HC is doable but risky(I think).

So,it turns out u need su privileges to downgrade, atleast based on this article http://forum.xda-developers.com/show....php?t=1492887 .. how should i proceed?

Try installing this:

https://play.google.com/store/apps/d...infire.supersu

If you want to uninstall it be sure to follow the instruction on the play page.

I don't have that app. Not sure how that helps