attached the g9t_root.zip
I tested it on my G9t with 4.04 (8.22). It works!
Thanks a lot ethaler, I guess your chinese is better than mine
Successfully rooted with thatFor people wondering here are the steps
1- Download the g9_root.zip file
2- make sure your sd card is formatted as a TF card and then copy the zip file on the card
3- Boot in recovery, choose the option to install from cache. It will then install and reboot
4- copy the build.prop previously attached by Kobra. I also edited the line of the version in the build.prop to say 4.0.4 instead of 4.0.3 as I like to know on which version I am
5- copy all other files (xml files) with correct permissions.
reboot and enjoy a market with much more stuff available. Some is not available thought for me. I might do some other modification to the build.prop and let you know if I have something working better