I am opening this thread to find a solution to upgrade 351 models. Otherwise We will never be able to upgrade anything it is a same for such a great phone. :)
Impossible for me and others 351 unlocked users to do any upgrade official firmware or leak. I have only succeed to do this upgrade: (3.5.3 to 3.6)
If someone from the staff here could help to find a solution!
Thanks in advance.