iPhone stuck in boot. Cantuck in boot. Can't SSH. Need Help.

[zoti]

I have a 3GS with 3.1.2. I Jailbroke and unlocked it with black snow. Went fine. I installed some apps from Cydia and now it's stuck in boot logo (apple). It will show the logo for about a minute and then turn off.

I can get to DFU mode but this already happened yesterday and I restored. I want to try and fix the problem without restoring. I understand it's a cydia problem but I can't get iphonebrowser to recognize the phone.

What are my options?

[jinthec]

Check your serial number, if the last digits of the first five numbers are 45 or higher, then you have the newest bootrom or iboot, which renders your iphone impossible to reboot after Blackra1n jailbreak, unless you run Blackra1n again.
It's called a tethered jailbreak and Blackra1n's tethered jailbreak is the only way to jailbreak iphone 3gs with the newest bootrom, we are S.O.L until some finds another way. I doubt the author of Blackra1n is going to change it since he calls the thethered jailbreak a feature rather than a problem.

[zoti]

I bought it the first week it came out and the serial number is XXX29XXXXXX so I should be ok.

I have restored again but now i'm afraid to install anything from cydia.

I decided to install everything through rockmyphone. so far no problems.

[andydlux]

i have a 3gs too and i stuck a couple of times in an endless loop after cydia starts by restarting springboard then u manually reboot and stuck at the apple sign. u have to connect the phone to ur computer then itunes pops up telling u the only way is to restore. but instead u have to have blackra1n u just click on blackra1n then make it rain and its back to normal.. at least in my case its like that. maybe its cause u use black snow not sure try it with blackra1n and go ahead and use cydia.
hope that helped