Here's what you need to do (I did this last night so I could un-root and install this update). Should work to get you back to stock 1.029. 1. Get Android SDK & the official Acer USB Drivers Android SDK | Android Developers Acer Support: Downloads & Support Documents - Tablet / ICONIA TAB / A700 2. Unlock the bootloader: Unlock bootloader - xda-developers 3. Install Clockwork Recovery: CWM Recovery 18.104.22.168 for A700 - xda-developers - I had to install this recovery.img using the BAT file from this post. IMPORTANT! DO NOT INSTALL THE recovery.img FROM THAT LINK! It will brick you. Replace it with the one from the thread above (22.214.171.124). 4. Download the appropriate ROM for your device. You'll want the first CUS1 as it is 1.0.29: A700 & A701 ROMS list - xda-developers 6. Follow the directions in this link. If you can't get update.zip to run from an external SD (I couldn't) then try it from the root directory of your internal SD (I just noticed the post was updated after I messaged him). [GUIDE] Updating A700 while rooted! revised: 8/4/12, bonus for USA tab owners - xda-developers After you've done it all, be sure to choose "NO" when you reboot the system from CWM, otherwise CWM is still going to be there and you're probably going to be unable to get future updates. It took me about two hours to figure all this out, and in the end my bootloader was locked, my root was unrooted, and I was on stock 1.0.29 and able to get the update. So once you're back to 1.0.29, just don't do this latest one.