Let me see if could explain better...

Fine, the no detect any network or modem 2g/3g.

File manager don´t open the cell memory.

X-terminal don´t accept any command, neither "sudo gainroot" and nothing.

The app manager, kolos you are right, only could delete apps but the app is very slow to start.

I flash the divice to resolve the problem, which to show suddenly, i think than i did how you say twice but without positive results.

I try find connections in place with wifi network availables, free and locked but don´t detect its, neither the modem inside the cell.

I dón´t know than colud be, i think than the antenna chip is broken... and another chip/processor is fail.