Issue Description
Q:
Attention points for Bootrom upgrade of R serial router.
Handling Process
A:
Bootrom of R serial router upgrades from 4.36 to 7.03, there are some attention points. Press ctrl+b and enter into boot menu, and then press ctrl+D and enter into bootrom upgrade menu and upgradebootrom.
Suggestions
Please operate according to the order above, otherwise bootrom upgrade fails.
