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### Instruction:
ZEN-6-FPD_ERR
### Response:
(Severity: 6), (Category: INFRA), (Description: The message indicates that new zen boot header is missing, have to use backdoor command to do upgrade. The command will upgrade spi flash with new boot header, working image, and golden image.), (Recommended Action: Go to /opt/cisco/calvados/bin, try ./zen_driver_test_cli -A -c 0.)
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