Quantum DLT 1 Operation Manual page 67

If the drive's code is not up-do-date, the drive reads the code image file from the cartridge.
The In Use and Write Protected LEDs flash alternately during the update process, which
typically takes two or three minutes.
When the drive finishes reading the code image file from the update cartridge, the drive
rewinds the tape to the beginning (BOT), resets, and performs a POST. The drive then
ensures that the code image file is valid. If so, it updates the controller's flash EEPROM. The
In Use and Write Protected LEDs flash alternately during the update process.
6. If the firmware update process completes successfully, the drive ejects the Code
Upgrade cartridge. Your DLT1 drive is now ready to use with the new code.
Note: If the drive does not eject the Code Upgrade cartridge, the firmware update failed.
Refer to the next section for troubleshooting information.
BENCHMARK
Preliminary 5-3
September 21, 1999
T A P E S Y S T E M S