Extreme Networks

I have been playing around with the Extremes for a few days now, I'm more familiar with Cisco networking gear and i cannot figure out how to extract the XOS off the unit. I know for cisco the command would be "copy tftp flash:"

i have 2 switches both with no iOS and they repeat The system is coming up, please wait...Read board ID of 0x80 from addr 0x23 Read extended model ID of 0x19 from addr 0x22 Matched board/model ID to platform index 6 Read board ID of 0x80 from addr...

Just trying to get into the switch mainly im new to Extreme and I just wanted to play around with one. learn how to back it up and reconfigure it, i bought a used machine with a unknown password and i have tried many was to reset it none are working ...