Do I need to upgrade the BootROM when I run the startup system-software command on a fixed switch to specify the software package for next startup

In V100R006 and earlier versions, the system displays the following information when you run the startup system-software command to specify the software package for next startup: "Warning: Basic BOOTROM will be upgraded. Continue?(Y/N)[N]." You must upgrade the BootROM; otherwise, the switch cannot start. Follow the instruction in the upgrade guide when you upgrade a switch.
In versions later than V100R006, the system automatically upgrades the BootROM after you run the startup system-software command to specify the software package for next startup.

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