Problem solved. If you ever have this problem, read my original post + the answer right below.
So here's the deal : since I upgraded to 3.40 oe-a, I can't go online. Everytime I try to go online, there's a blue screen popping and telling me to press "O" 'cause I need to reset my settings. The problem is that I can't press "O", the PSP freezes there. :Argh:
I've tried switching memory sticks with the same result. I read here that other people have this problem but I didn't find a solution. Could anyone help me pretty please?
If I have to reinstall 3.40 oe-a, is there a guide somewhere to "reinstall" it without srcewing my PSP?
If you ever get this problem, go to :
restore default settings under- settings (far left of XMB) system settings - restore default settings. Do that and it should work afterwards. Sorry if this post is noobish but hey, we all start somewhere! ;)