if the service processor detects that its programming has been corrupted when it is powering on to standby mode, it will enter recovery mode. in recovery mode, it prompts for the firmware update diskettes by putting eight-digit codes on the operator panel display, as shown in the following table. after the update process is complete, the service processor resets itself and performs a complete reboot.

   

    1. if the wrong diskette is inserted at any time, or if the diskette is left in the drive after it has been read, b1fd 001f is displayed, indicating that the wrong diskette is in the drive.

    2. if b1fd 001a is displayed at any time during the process, the service processor must be reset by activating the pinhole reset switch on the primary drawer operator panel.