Hi, I have an iPhone 3G, which originally was running a redsn0w jailbreaked 3.0. Recently, I've decided to update to 3.1.2, and through google, found a guide that told me to download a custom firmware and update that. Initially, I accidentally used the "update" function, but canceled that and started to restore it to 3.1.2 (not sure if it matters, but thought I should mention it). The guide said that my phone should be jailbroke after that, but when I turned it on, it was no longer jailbroken, and because my carrier is T-Mobile, it wouldn't even let me in. I had no idea why this didn't work, and resorted back to google to find an alternate solution. I downloaded an original 3.1.2 firmware and redsn0w 0.9.2, and proceeded to use that. Everything proceeded smoothly until my phone displayed the downloading ramdisk picture, in which it suddenly shut off. I have no idea why it did this, and I cannot find any other method for which to try again with. Please help, because right now I don't even have a usuable phone!