App Header Failed

[zhangjie5168]

this is my MOD5282 serial output information:
Waiting 2sec to start 'A' to abort
//====================================
App Header Failed
No Valid app


Netburner MOD5282 Monitor V1.13 Dec 6 2005 14:35:59
HELP for help
nb>

//=======================================

and I didn't input anything via MTTY,for exemple "help"