HELP! Powerconnect 5224 - can not access the ctrl+f menu

We recently got a used 5224 and while trying to update the firmware via console, I apparently loaded the wrong file and now I can not access the ctrl+f menu to reset to default, download firmware, etc. Anyone know of any way to get around this. Also I have noticed that when i do a "show system", the serial number, MAC, etc are all blank.

  file name      file type startup size (byte)
 -------------------------------- -------------- ------- -----------
                  Diagnostic52511 Boot-Rom image       Y     1570724
         ES4524B-77_V3.1.0.13.bix Operation Code       Y     1570680
       Factory_Default_Config.cfg    Config File       Y        2686
 -------------------------------------------------------------------
                                         Total free space:    262144

Console#show system
System description: PowerConnect 5224
System OID string: 1.3.6.1.4.1.674.10895.4
System information
 System Up time: 0 days, 0 hours, 22 minutes, and 34.46 seconds
 System Name            : [NONE]
 System Location        : [NONE]
 System Contact         : [NONE]
 MAC address            : 00-00-00-00-00-00
 Web server             : enable
 Web server port        : 80
 Web secure server      : enable
 Web secure server port : 443
 Telnet server          : enable

Please help if you have any information on this issue. I tried calling Dell but due to this being bought used, I had to do a change of ownership form and cant get assistance with this for 2 weeks!