Hello, at the CCO you can see:
Problem: "Permission denied"
"This error message appears when the boot parameters are not set correctly. In most of the cases, when setting the boot parameters during or after the upgrade, the word flash: is mistyped or completely missed.
Go to Setting BOOT Parameters at ROMMON (Switch: Prompt) to verify and set the BOOT parameters correctly.
If setting the BOOT parameters to the correct filename does not resolve the issue, perform an X-Modem upgrade, as the file present on the Flash memory could be corrupted or invalid."