well somehow i buggered my minecraft up and had to reinstal it. So now i'm 1.8.1 though on my laptop i have a 1.5 something or other. oh and some jar files which i assume are patches for the versions up to 1.7.3. can any of these be copied over to the 1.5 file somehow and used to update that to 1.7? or not really and i'm better off staying with 1.8?.
I trtied a program called mc nostalga and that's how i buggered up my minecrsaft last time (well something i did anyways)