Sent from my Nexus 7 using XDA Free mobile app
sorry wrong thread!
my phone was working properly (rooted but not boot unlocked)
pc companion told me there were a new version availlable (.253) I accepted, install, reboot, everything was fine.
I tried to backup my data in order to change the sd ca...
ok , I've tested the new version
apparently it's much easier whith a lot of the operations that you don't have to do...problem is that the command prompt menu was in japanese...