Chapter 4: Web Interface 37
The Bootstrap Image section indicates the version number, size and internal slot number for
the embedded kernel image. The previously installed image is maintained as a backup. The
Bootloader field indicates the version number and size of the bootloader image. The FPGA
field indicates the version number and size of the FPGA.
2. To update the application image:
a. Click Update Application. The Application Image Update window appears.
b. Enter the IP address of the TFTP server and the application image filename.
c. Click Apply. The update process may take up to 30 seconds to complete. After the update
completes, status will be displayed.
3. To update the bootstrap image:
a. Click Update Bootstrap. The Bootstrap Image Update window appears.
b. Enter the IP address of the TFTP server and the bootstrap image filename.
c. By default, the bootloader will only be updated if the version number of the new image is
greater than the version number currently installed.
If you wish to downrev the bootloader (that is, use a previous/earlier version), enable the
Update Bootloader Regardless of Version checkbox. It is generally recommended that this
checkbox be disabled.
d. Click Apply. The update process may take up to 30 seconds to complete. After the update
completes, status will be displayed.
The new Flash image will be used after the ESP serial hub reboots.
Displaying or Changing Configurable Features
The Configurable Features display includes the current settings of the features described in
Table 3.11 on page 29.
To view or change configurable features:
1. From the Main Menu, select Configurable Features.
2. Click the Enabled or Disabled radio button next to the feature to be changed.
3. If you changed any setting, click Apply. The change will not take effect until the next reboot.
To reboot, click the Reboot button.
When the ESP serial hub is reinitialized, all configurable features are restored to their
default settings.
Downloading a Configuration File
To ease the task of configuration, the ESP hub supports file-based configuration. The
Configuration Download operation initiates the loading of a configuration file from a TFTP server.
The commands in the file are processed and the configuration is then updated. See Chapter 6,
beginning on page 55, for more information.
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