Purchased my AT&T Wireless 3G card about 2 months ago. Has worked flawlessly since then, up until today. Out of no where, when trying to connect with a full 3G signal available, an error message stating Error 668 caused the connection to terminate. I tried the usual problem solving of removing the aircard and reinserting it, restarting the ATT connection manager, and restarting my laptop. Nothing worked, and it continued to produce the Error 668 message.
As I would rather squeeze turnip juice than call AT&T Wireless for any technical support issues, I tried A few Google searches which netted some promising results. While I am not sure exactly what fixed my problem, it is now working again without any hardware replacement. Feel free to try the methods below.
Reinstall the Firmware
- If you have a different model or Mac OS, you can start at the Sierra Support website
- Otherwise, visit the 881 AirCard Support Downloads page for Windows
- Download and run the firmware application, while keeping your aircard plugged into the PCMCIA slot.
- Some people mentioned that installing the Connection watcher utility from the support downloads page may also help with this issue, but I did not need to use it.
After reinstalling the firmware, I attempted to connect again but still received the same error 668 code. I then moved to this next little workaround.
Install New ATT Connection Profile Using wap.cingular
This is what I think finally fixed my problem, but it did not work without first reinstalling the firmware.
4. Hit next, make sure both radio buttons are select to “Obtain IP Address Automatically” and hit next again.
5. Give your new profile a name, I used AT&T (2). I changed the connection options window to “Automatic” from the default manual, and that seemed to work for me.
Hope this was some help to you. Please post in the comments if this did or did not work for you.