100% solution for iphone 3g with cydia after jailbreak with redsn0w
 

Now as mentioned above, this is just a beta release of RedSn0w, which means you might have a few issues. One of the most common issues is that the Cydia icon appears all white. In order to fix this, simply add the following repo to Cydia and reboot your iPhone: http://apt.saurik.com/cydia-3.7.:):):):eek: