After following the instructions on updating my 3gs iphone to 6.15.00 and ran redsnow to jailbreak it. The processed seem to be completed successfully. But when the iphone reboots, the Cydia icon is white. I click it but nothing happens...What did I do wrong? any help would greatly be appreciated!

Originally Posted by monsteranh

After following the instructions on updating my 3gs iphone to 6.15.00 and ran redsnow to jailbreak it. The processed seem to be completed successfully. But when the iphone reboots, the Cydia icon is white. I click it but nothing happens...What did I do wrong? any help would greatly be appreciated!

This is normal - it's because you have not used the "just boot tethered for now" option in redsn0w to boot your jailbroken 3GS.

Dev-Team Blog - Thanksgiving with Apple

# “Tethered” does not mean you cannot boot at all without PC/Mac assistance. If you have not installed any tweaks that hook into important programs like SpringBoard or CommCenter, your device will actually boot. However, jailbreak programs like Cydia won’t work (and Cydia may still have a white icon). Also, certain built-in apps that had to be moved by Cydia will fail (Safari being the most noticeable example).
# If you’ve installed MobileSubstrate tweaks that hook into SpringBoard or other important programs, your boot will actually fail (you’ll get stuck at the Apple logo). You need to use redsn0w to “Just boot tethered right now”.

I did this also and it just shows me a picture of a pineapple while my phone shakes every two seconds, never loading the iphone...