Quantum DLT 8000 Product Manual page 383

If the WRITE PROTECTED indicator does not blink, check that:
1. POST passed
2. The drive is unloaded.
3. The drive handle is in its down position.
C. Release the UNLOAD button, then press the UNLOAD button again within
four (4) seconds. The second press should take less than one (1) second.
D. The TAPE IN USE and the WRITE PROTECTED indicators will blink. This
indicates that the tape drive recognizes that the firmware update mode has been
selected.
If you are unsuccessful in selecting the firmware update mode (if, for example,
pressing the UNLOAD button the second time requires longer than one [1]
second), the WRITE PROTECTED indicator will stop blinking within several
seconds. Try the procedure again. If the drive and controller PCBA are not
communicating properly, you cannot select the firmware update function.
Once the firmware update mode has been successfully selected, insert the cartridge with
updated firmware image into the drive. The drive then
Automatically reads the cartridge. The tape will move for a few minutes
performing calibration and directory processing before any data is read.
Examines the data
Verifies that the data is a valid firmware image for the tape drive.
At this point, the firmware update mode is automatically cleared. One of the following
conditions will occur:
If the firmware image is valid and the drive code is up-to-date, the drive code
does not go through an update.
If the firmware image is valid and the drive code is NOT up-to-date, the code in
the drive is updated. This will take 2 - 3 minutes
While the drive code is being updated, the WRITE PROTECTED and TAPE IN
USE indicators flash alternately.
NOTE
Quantum DLT 8000 Tape System
Appendix C: Updating the Firmware
C-3