the lan manager isn't as thorough as saving via rs232 or usb for the image file or channel list.
The receiver lets you choose the individual parts to add to the image before it gets saved,the lan manager doesn't have that option.If you compare dumps from usb and from lan with a hex editor,you will see they are different.It's a quick way to load firmware and channel list anyway,since I have the ethernet cable connected all the time along with rs232.Rs232 is the most thorough way to dump,followed by usb then lan.