I just updated from 4.0 to 4.3 using redsnow and everything appeared to work except for Cydia, the icon is just white. It just crashes after running. I tried the fix i read about of booting it into a tethered mode and that fixed it, but after rebooting, it doesn't work again. Is there any good, untethered, fix or a certain firmware I should downgrade back to? Thanks.