I recently bought an iPhone 3GS that came with 4.0.1. Like several others, I am having troubles with Comex's jailbreak; it gets to the 'sit tight' message and then returns to the home screen. I've tried clearing the cache/history/cookies multiple times, the email method and the iBook method, all to no avail. Is there something obvious I'm missing? I've been led to believe a restore to 4.0 may solve my problems but am I right in assuming that as I don't have the SHSH blobs, I won't be able to do this? Apologies if a solution has been mentioned elsewhere, I wasn't able to find anything.