ASUS TF101: how to downgrade Android from version 4.0.3 to 3.x?

Question

Android

I have ASUS TF101. When it had Android 3.2.1 I was able to root it. But I forgot to protect it from the rally when updating the OS. Updated Android to 4.0.3 and root flew off. The previous tool was no longer suitable for getting root. And the new ones found for my version did not work correctly: some files from the old root remained, as I understood.
In this regard, the question is how to downgrade Android from version 4.0.3 to 3.x? To get root along the path traveled and then upgrade to Android 4.x

Answer 1

Here is a guy who solved the same problem.