[Captivate Q&A, Help & Troubleshooting] Geoff423:
I've searched high and low, and I can't find any existing threads that really address this issue.

My captivate is rooted, running Cog 2.3b8.

This week I connected my phone to my computer to charge overnight, just like I do every night. The next day the phone was dead, and with some extensive investigation I determined that for some reason it didn't get a good connection and ran the battery down.

It seems that the stock USB cable now won't get a good connection at all. It will charge if I fiddle with how it fits, and hold my mouth just right, but it won't make a good data connection. Occasionally it will make a data connection, but my computer won't recognize the device and my phone won't give me notification that it's connected.

I normally have the phone set on debugging and set to select connection, but I've tried every option. I had Kies installed originally, but I hadn't used it for some time and uninstalled it to make sure that wasn't the issue. I also deleted my drivers and downloaded and installed them again, multiple times. Finally, I've used 3 different data cables, and all of them get a good charge connection, but don't register on the computer or on the phone as data connections.

The phone hasn't had any previous issues with the USB, and unless my kids did something to it, wasn't dropped or damaged while attached to the USB or otherwise.

Additionally, I don't believe there has been any liquid damage to the phone. The liquid indicator patch behind the battery is white. I did notice that my car charger cable had some very minor corrosion on it, which I suspect is getting some minor water on it from briefly being dropped into my floor mat. It was connected to the phone while it had that corrosion on it, but I do not know if it was actually connected while it was wet as I didn't note it until after the fact. I carefully cleaned all of my cables and the phone connector without any changes.

While I could deal with syncing various things via wifi or bluetooth (though I suck at building networks for wifi networking), and I can make the phone charge in a number of various ways, but I'd like to flash to the new Cog and/or go to the stock Froyo if/when it actually arrives, and I'm not sure how to go about doing that without the USB connection for the Odin master clear and reset to stock. Can I use the build in data wipe, use bluetooth/usb/wifi the update.zip and kick it into download mode in a different way? That would get me back to stock, but I'm not sure how to root back to stock to use ROM manager or titanium back up without the USB.

Any suggestions? Is there something special or proprietary about the Sumsung USB that makes the connection that my aftermarket, data capable, USB doesn't have so it won't work for my phone?

Also, is it possible that it could be related to a bad ROM install? This is my 3rd version of Cog, and I trust DG's work pretty well, but I have a LOT of issues with apps crashing that I didn't have on previous versions, and have pretty constant vibration notifications for something without any indication on what it's for. I won't say for certain I didn't screw it up, particularly with the master clear in Odin.