I just jailbroke today using Blackra1n and I am having a problem updating Cydia and Rock. It will not allow me to download winterboard as well. It tells me that there is a Size Mismatch. I am currently trying to use my works Wifi and some things are blocked. I was able to install Iblank but that is about it. When I bring up winterboard on Rock the download page says blocked could that be the problem for no install?