Urgent! Problems with blackrain 3GS 3.1.2 and restoring

Hi,

I own an Iphone 3GS with the new bootrom, and jailbroke with blackrain about a month ago.
Since then I have had no problems with it being tethered, and have successfully rebooted it a number of times with blackrain.
Last night I then installed blacksnow, and then my wifi would not find networks. So I reset the network settings, and then rebooted.
I then plugged into blackrain to reboot, but when I reboot it loads up with Geohots mugshot on, for around 5 minutes, and then goes back to the apple logo and tries to boot again.

I have tried editing the host file on my mac so I can then restore to 3.1.2, but in iTunes I get the error, 'The iPhone ' iPhone' could not be restored. This device isnt eligible for the requested build'. I tried restoring in DFU mode also.

I saved my SSH with cydia before it went wrong, and have tried using Umbrella V222 to recover the SSH, but it says there are no SSH files for this iphone, and I am positive that they were saved on Cydia.

So what are my options? Is there any way of booting it up without restoring it?
Is there any way of me restoring back to 3.1.2 after restoring to 3.1.3, as it seems iTunes is not letting me restore to older versions of the firmware?

Please help, I am desperate as I need my phone to be usable again, but also would like to keep the jailbreak.

Thank you very much, please help!

 

Thanks for the responses. I am positive that I had my SSH on file for 3.1.2 with Cydia, I always remember the green writing at the top saying it was stored.
Any other ideas for editing the host file/ umbrella? Im sure I edited the host file correctly, and tried it a few times.

 

Im on a mac

 

It was definitely with 3.1.2, I have never had 3.1.3 installed. And yes it was about a month ago as that it when I purchased the phone, and did it through cydia, after jailbreaking. Am I screwed then?
I guess there is no other way of downgrading to 3.1.2?
But what I dont get, is if I currently have 3.1.2 installed, why can't I just press option + restore and select the 3.1.2 firmware?
Or have apple blocked it so that you can only restore to 3.1.3 now, regardless of the firmware installed before?

Also I dont understand why the jailbreak screwed up in the first place, its been working fine since I have had it, is there any way of fixing it though blackrain as it isnt booting properly with it, to avoid restoring?

 

Ok, Im trying iRecovery now. Ive download iRecovery and libusb, they are both in my downloads folder.
In terminal I typed the command cd /users/Will/Downloads, and then iRecovery -s, but after I type iRecovery -s, I get the message, 'command not found'.
Any ideas on how to get it working?
Thanks so much for your help so far by the way

 

Thanks, I'll give them a go after my dinner and let you know how it goes

 

Ah, this sucks.

Tried to follow this tutorial
http://www.ihackintosh.com/2009/07/irecovery-iphone-recovery-mode-loop-restart/
When I entered these commands:
setenv auto-boot true
saveenv
/exit
into iRecovery there seemed to be no response, the only one which did anything was when I typed 'reboot', and the iPhone reboots, but still in recovery mode.
Im losing hope
Any familiar with iRecovery?

 

Anyone? I'm about to restore to 3.1.3 as I need my phone operational, anyone experienced with iRecovery?