For an easier Script to do the same thing (and more), scroll down to the asterisk line, and read below that. Download this file [mirror] - appx 190mb - and unzip it to your desktop (contains all the files you'll need: image/zip system files, adb, and fastboot). Thanks droid-life [Make sure you use 7zip and not winrar - thanks GeLopez - see post #7] Three quick notes... First, this will wipe your phone, internal storage included. Second, #6 took a few minutes for me, so don't panic - all the others went quickly. Second, if you just want to wipe your phone clean and start with a completely clean factory slate, but maintain the unlocked bootloader, stop after #8. Now for the adb/fastboot commands... (plug your phone into your computer and make sure you have USB Debugging enabled) Ok... if it's [blue, italicized and in brackets, it's not a part of the commands] adb reboot bootloader fastboot flash bootloader bootloader-toro-primekk15.img fastboot reboot-bootloader fastboot flash radio radio-toro-i515.ek02.img fastboot reboot-bootloader fastboot flash radio-cdma radio-cdma-toro-i515.ek05.img [this one takes the longest - possibly a couple minutes] fastboot reboot-bootloader fastboot -w update image-mysid-icl53f.zip [If it doesn't reboot, #9 and #10 will work. If it does reboot, log in, enable usb debugging, and for #9 use "adb reboot bootloader" instead, then proceed to #10. Also, stop after #8 if you want to maintain the unlocked bootloader] fastboot reboot-bootloader fastboot oem lock Now restart by highlighting "Start" and pressing the lock/power button. That's it! ****************************************************************** Here's an easier/better script method from Mr. ZoSo, in this post (thanks!): Here's a modified script that will allow you to choose between 4.0.1 and 4.0.2. (as long as you have either image or both) It also has the option to re-lock the bootloader, without the need to have the full Android SDK on your system. I'll also update it when the official 4.0.3 images are released. I don't take no credit for what was already done, I just modified it Prerequisites: -------------- Windows PC running XP, Vista, or Windows 7 USB and ADB drivers must be installed and working properly. Google Images (You only need the one you want to flash to, having both is optional): 4.0.1 - https://dl.google.com/android/aosp/mysid-itl41d-factory-516b56c2.tgz 4.0.2 - https://dl.google.com/android/aosp/mysid-icl53f-factory-65895fa8.tgz Instructions: ========== 1- Extract folder with contents of this package. 2- You will need the Google Factory image for the version you want to restore, or both if you want. 3- Extract the image files to the same folder in step one. Image files should not be in a seperate folder! So you should have, in one folder, the above files contained in this package plus: image-mysid-xxxxxx.zip (xxxxxx= pertains to what version) radio-tor-i515.xxxx.img radio-cdma-tor-i515.xxxx.img flash-all.sh bootloader-tor-primexxxx.img 4- Enable USB debugging in Developer options on phone. 5- Dbl click on GNexRestore.bat and follow the prompts. Optional: --------- If you do have the Android SDK installed, just copy the image files and GNexRestore.bat to the platform-tools folder. fastboot.exe will also be needed, if you don't have it already, just copy the one in this package to the same location. Then run GNexRestore.bat Download: Multiupload.com - upload your files to multiple file hosting sites!