In the event of continuous failure, enter monitor mode by pressing b during a boot cycle. Only a restricted CLI is available in monitor mode if the device was previously running in FIPS mode. This restricted CLI does not allow the use of commands that refer to the reading or writing memory location.
If you intend to run the memory access commands, erase the startup configuration file using the erase startup-config command. After the startup configuration is erased, the device lifts restrictions and starts with a blank configuration and FIPS mode is disabled. Use the reload command to reload the device. Refer to Reloading the device.
In this mode, you can download a new image to the device if required.