New and need help :(

[LanaBanana]

I didn't want to make another topic... But I wanted to ask another question;

For some reason, it might be in my mind but, after I messed with it and tried that de-branding thing, i got up to the bcking up the things I needed to back up... But it failed and I tried another couple of times but they all failed because I had to upgrade it to 52... when I was on 53... Anyways, my phone has been acting weird.... ?
Like, when I wanted to plug it into the pc to transfer files... It get a white screen and takes a while to actually go onto the file transer screen... And when I take the cable out, using the safe removal USB thing too, the screen goes while again and takes a while to go back to my stand by screen.

Also, I was texting earlier, and it went to a white screen again and then went to the text again... The rest of the phone works perfectly after that, although it's a little slow to text... but that's been since I got it...

Anyone know what I've done to my phone? It's a K800i.