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6
Maintaining Software
Overview
Files Managed by a U200 Series Device
Three types of files need to be managed on a U200 series device. They are:
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BootWare program file
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Application file
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Configuration file
BootWare Program File
The BootWare program file is used for booting applications upon device startup and is saved in flash
memory. A full BootWare program file includes two segments: basic and extended.
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Basic segment of BootWare is used to finish basic system initialization.
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Extended segment of BootWare provides abundant human-computer interaction (HCI) functions
and can be used to upgrade the applications and boot the system.
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After the basic segment is booted, you can load and upgrade the extended segment on the menu
of the basic segment.
Application File
A U200 series device supports the Dual Image function. By default, the system defines three application
files for booting.
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Main application file
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Backup application file
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Secure application file
The three kinds of application files are stored in flash memory.
If you have loaded the three application files into flash memory, the system will boot using these three
files in order. For more information about application files, refer to the "Maintaining Application and
Configuration Files” section on page 6-26.
The following gives the default names and types of the application files and their priorities for booting.
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Main application file. The default name is main.bin, and the file type is M. It is the default application
file used for booting.
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Backup application file. The default name is backup.bin, and the file type is B. When the system
fails to boot with the main application file, it attempts to boot with the backup application file.
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Secure application file. The default name is secure.bin, and the file type is S. When the system fails
to boot with the backup application file, it attempts to boot with the secure application file. If the boot
with the secure application file fails, the system displays a boot failure prompt.
Note that:
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