HP Handheld sp400 Installed File Stamps, Update Files, Understand how the update process works

Use the HP sp400 Series Configuration Software

Installed File Stamps

The list of installed file stamps provides information about which HHP files are currently installed on your All-in-One device. To put it simply, the installed file stamp is the sum of the HHP file stamps that were used to update the All-in-One.

Update Files

The Update Files section is used to update the firmware and configuration of the All-in-One using HHP files. For instructions for performing an update, see “Update firmware through USB.”

Understand how the update process works

The update process uses file stamps to determine which files should be applied to the All-in-One. The file stamp of a file is a number computed by the software from the contents of the HHP file. The Install File Stamps section on the left side of the Update tab is a listing of the file stamps of the files currently installed on the All-in-One. The Update Files section on the right side of the Update tab displays the file stamp for each of the files that will be installed.

The software determines whether or not to apply firmware and security files by simply comparing the file stamp currently installed to the file stamp of the HHP file. If they match, no update is needed and the file is skipped. A simple comparison works for firmware and security files because there can only be one of each of these files. It makes no sense to have two FPGA firmware updates or security updates; however, for the other file types it does make sense to have more than one file in a set of files. The file stamp representing files other than firmware and security files in the device is the sum of the individual file stamps that were applied to the device. Therefore, in order to determine whether a file type needs an update, the software computes the sum of all of the files of that type and compares the sum to the file stamp for that file type in the device.

If you prefer to ignore the file stamps and force all of the selected files to be applied to the All-in-One, select the Force update check box.