Thread: from 4.0 to 5.0 then 4.0 and 4.0......

Good day guy!>.

Can any1 help me how to upgrade back my O.S to 5.0?
I already have OS 5.0 ,just wanna try the 4.0 OS ,when suddenly i want to upgrade it back
I cannot upgrade it.,


pls help'
thanks

304B5E44

So you are on OS 4 and are trying to upgrade up to OS 5?