I just updated my Dell E521 bios with the Modded SLIC 2.1 one I found here on this board but I notice after I flash it that my Service Tag has changed. I was wondering can I change it back to the original one or is the service tag linked with the SLIC and changing it back would revert the system back to a SLIC 2.0? If one has nothing to do with the other I would like to change it back to the original one. I've tried using the asset209.com method (i.e. asset /s <new_service_tag ID>) and it says it changed but I when look in bios system setup menu it still shows the old one still. Then I'd tried the svctag.exe method and a get error message saying the utility isn't the compatible with bios. If I'm missing something I would appreciate the help! Thanks in advance for any advise!!