Hi! Here's something else from the French forum I mentioned in my topic on Rooting the C91 - *Update* I already tried this method and installed the ICS on my tablet! - by the way I installed the xxx2n version(http://www.zenithink.com/Eproducts_C91.php?download ;if you are not sure which version to install because your Model num doesn't have a xxx2n or xxx3n then use the file browser to go to your internal memory - there is a text file which has 2n in its name (my tablet was the xxx2n version - I don't know for 3n version users, just see if you have such a file in the internal mem) ) : That method is not originally mine - I'm just translating what I found in this post - TabletteDroid.com Le Forum ! • Afficher le sujet - METHODE POUR FLASHER UNE ROM ZT-280 C91 so all credits should go to the person who originally posted it. Method for flashing a ROM for the Zenithink C91: ATTENTION (yup that's pretty much a copy/paste from the topic on Rooting): There are risks involved in the flashing of your device. If you do something wrong, or use a corrupted(badly-decompressed) ROM (no idea what they mean by badly-decompressed - guessed it should be corrupted) or if your tablet shutdowns during the flashing due to lack of energy, etc. (there are a lot of things that could happen) that could lead to the "death" (I mean it may not work anymore) of your tablet. Nor the forum (http://forum.tablettedroid.com; I'd add also http://www.androidtablets.net) , nor the person who wrote this (cake1974;nor me, I'd add) will be taken responsible for any damage caused to your tablet by flashing it. 1.Format the microSD to FAT32. 2.Shutdown your ZT-280 C91 and start charging it. 3. Create a folder - " zt-update " on your MicroSD. 4.Copy the files from the ROM to the " zt-update " folder 5.Insert the microSD in your ZT-280 C91 6.Turn on your ZT-280 C91 and immediately click on the camera button 7.Click again on the camera button to confirm (there was no need for this when I installed the ICS on my C91) List of files to copy to " zt-update ": The file "license1.ef" is a Dolby Digital license. It is necessary for AC3/DTS audio decoding. ImageShack® - Online Photo and Video Hosting If you have any questions feel free to ask.