s3c2440的BIOS模式（从nor启动）

本人刚买了个友善之臂的mini2440开发板。按他们的用户说明中，建立好“超级终端”后，打开电源，从NOR FLASH启动。在超级终端中输入每一个命令，都是“Could not found '*' command”的错误提示。到底什么原因，莫非Supervivi没有烧写吗？希望知道的牛人们帮个，感激！
##### FriendlyARM BIOS for 2440 #####                                    
[x] bon part 0 320k 2368k                        
[v] Download vivi                 
[k] Download linux kernel                        
[y] Download root_yaffs image                             
[c] Download root_cramfs image                              
[a] Absolute User Application                             
[n] Download Nboot                  
[e] Download Eboot                  
Download WinCE NK.nb0
[w] Download WinCE NK.bin
[d] Download & Run
[z] Download zImage into RAM
[g] Boot linux from RAM
[f] Format the nand flash
[p] Partition for Linux
Boot the system
Set the boot parameters
[t] Print the TOC struct of wince
Backup NAND Flash to HOST through USB(upload)
[r] Restore NAND Flash from HOST through USB
[q] Goto shell of vivi
Enter your selection: q
Supervivi> d
Could not found 'd' command
If you want to konw available commands, type 'help'
Supervivi> t
Could not found 't' command
If you want to konw available commands, type 'help'
Supervivi> s
Could not found 's' command
If you want to konw available commands, type 'help'
Supervivi>