If you turn off the LCD.EnableDebugMessages; you can’t see the instructions when flashing new firmware! Eep :o
Good thing I can do this blind. Maybe next update you can override that when in TinyBooter mode?
this is not only in latest FW…
Im update my ChipworkX in blind mode 
first press UP+DOWN+CENTER button and hold them then RESET system.
After reset Im release buttons and 2xpress UP button and wait few minutes.
Then Im reset it and use ChipworkX Updater to update new FW…
Customers only disable those messages when product is shipped and should use the IFU feature if it is designed to be updated. While in development, do not disable debug messages if you need the messages.