[Acer Iconia A500] timmyDean:
There currently is no way to root a stock 3.2 or later tablet with a simple one click. In the past GingerBreak gave us that ability but since has been plugged. The other thing causing issues is ACER locked the boot loader making it difficult to flash in a new boot image to get to root.

=== 411 on rooting ===

So, if you have a tablet and want to root it then you have to start looking at security holes. This is what the GingerBreak exploit did along with others. But, ACER plugged those holes and as of today, nobody has found anymore.

So, you might look at exploiting an update.zip. These are OTA's that run but they are signed by ACER. So you can take it apart (unzip) and modify it, but you cannot resign it with an ACER Key. Therefore, you have to sign it with your key. Since it is NOT signed by ACER, the ACER recovery will not install it. So, you have to replace the ACER recovery with CWM which will install any update.zip regardless of who signed it. You just need to change the built in recovery by flashing in CWM recovery.

Lastly, you can just change the boot image and add root. This is easy and straight forward to do. This is just like making your own custom update.zip. Once you have your custom boot, you can then just use Nvflash to flash in your custom boot.

Now, fast forward. ACER (can someone please explain to me why?) decided to lock the bootloader thereby not allowing you to replace the recovery, boot, or any other area. Meaning, you cannot use Nvflash anymore without a key.

With the bootloader locked, you can only load new images if you know the key used to lock it. Of course, they use a public and private key combination, and they appear to use the serial number of the USB device as part of the public key making the keys on my tablet unique compared to yours.

With all this said, this ends all the easy simple rooting methods because first, they've plugged all the security holes (which they should do). Secondly, they locked the boot loader making it very difficult for people to just flash in a rooted boot image.

Armed with this, how do you root a 3.2? One way to do it is to get to a version prior to 3.2 loaded that has a security hole or does not have the bootloader locked. You now exploit it and get root. Now, with root access you make a 'backdoor' that only you know about which allows you to get into your tablet as root. With this done, now roll your tablet forward apply all updates. Since you have a 'backdoor' you can always gain root access.

Unfortunately, this gets to be messy or can be more difficult to do than just clicking on a GingerBreak application. However, if you follow the steps posted here in the forum, it's straight forward and easy enough to do. If not, you are going to have to wait for someone to find a hole and build a oneclick application. I wouldn't hold my breath on this, it probably will never happen because everyone is working on ICS.

Lastly, everyone should write to ACER, refuse to buy ACER (or any tablet) that doesn't allow you (AS THE OWNER) to change it. How would you like to buy a Ford to just have Ford lock the lug nuts on the rims so you could NOT put on your custom wheels.

I believe failure to allow owners to unlock these devices will be the downfall to Android. Windows 8 does NOT have such restrictions and businesses are not going to use devices that are locked and cannot be customized for business. Because developers write software they can sell, they'll move to Windows 8 and drop supporting Android and all these goofy flavors and restrictions. Android might be great and everyone hates Microsoft, but software vendors are going to NOT want to support all these devices.

my 2¢