First of all, let me say this. There is no way to brick your iPod Touch 2G through the jailbreak process. You are, during the process, only adding files to the RAM for them to boot the already jailbroken filesystem. These are only software changes, and every single problem that you have can be completely fixed with a single restore from iTunes. Also, please be sure that your iPod is not simply in DFU Mode, or that you haven't put it in DFU Mode correctly when applying the boot patch. These are common mistakes, and checking these two issues can save you a large amount of time. To restore your iPod in iTunes, you have two options. First, you can simply click "Restore" in iTunes, and the latest firmware will be downloaded and applied, or you may hold the left Shift key and click the Restore button, allowing you to choose which firmware file to Restore to. This means that your iPod must be in Recovery Mode, or DFU Mode. To enter Recovery mode: Disconnect your iPod Touch from the computer, if not done already. Hold the Sleep button (Power button) until you see the slider disappear, and the iPod has completely shut down. Hold down on the Home button, releasing the Power/Sleep button right after. Connect your iPod Touch to your computer while still holding down the Home button, your iPod Touch should show a cable and the iTunes Logo. Recovery mode is mainly to restore your iPods firmware. It does not allow the full functionality of DFU mode, which is needed in order to send commands to the iPod and boot a patches system. To enter DFU Mode: Leave your iPod Touch connected to the computer. make sure your iPod Touch is completely shut down. Press and hold both the Home and Sleep buttons for 10 seconds. Your computer will make a sound telling you that your iPod Touch has been disconnected. Release the Sleep button after TWO SECONDS of hearing the previous sound of the iPod Touch being disconnected. Continuing to hold the Home button, wait for your computer to make the sound telling you that it has found your iPod Touch. It may not be a recognized device, which is completely fine. An iTunes Restore should completely fix your problem every time. Also, do not be afraid to restart the jailbreak process if your iPod failed halfway. Since these are all software changes, simply restarting the process will not harm the overall state of your iPod Touch. I would honestly recommend using the manual tutorial for both Windows and Mac, since this is the most secure way to jailbreak. If iTunes fails to recognize your iPod Touch after a jailbreak, reboot your iPod and patch it to boot using one of the many scripts provided on this forum. You may also want to see if you can SSH to your iPods directory, which is detailed in many other threads also provided here at iPodTouchFans. If your computer fails to recognize your iPod Touch without a jailbreak, reinstall iTunes. This will also reinstall the drivers needed to recognize your iPod. If this fails, reboot your iPod. Many users have had trouble installing Libusb, and if you suspect that this is the issue, reboot your computer in Safe Mode and do a System Restore to remove Libusb. Extra explanations, for novice users: Your iPod, during the jailbreak process, will be in DFU mode. This is a completely black screen, but with a closer look you will be able to see that the screen is lit up from behind. Whether or not your computer recognizes your iPod as a usable device is unneeded, but for your computer to know that it is THERE is necessary. When booting the iPod, your screen will turn white when it is ready to accept the new iBoot. If your screen is white and you cannot send any files or commands through iRecovery or a commands prompt, then you have either entered the previous commands during the process with an error, or you have unplugged and reconnected your iPod during the previous attempt. If your computer fails to recognize your iPod at this time, perform a full reboot by holding the Sleep and Home button for 10 seconds, and entering DFU Mode to restart the booting process.