H3C S3100 Series Command Manual page 751

full: The full update mode is used when the PSE processing software is damaged. The full update
mode is to delete the original damaged software in the PSE completely and then reload the PoE
processing software.
filename: Update file name, with a length of 1 to 64 characters and with the extension .s19.
Description
Use the poe update command to update the PSE processing software online.
Use the full mode only when the refresh mode fails. In normal cases, use the refresh mode.
When the PSE processing software is damaged (that is, all the PoE commands cannot be
successfully executed), you can use the full mode to update and restore the software.
When the online upgrading procedure is interrupted for some unexpected reason, for example, the
device is restarted due to some errors. If the upgrade in full mode fails after restart, you must
upgrade in full mode after power-off and restart of the device, and then restart the device manually.
In this way, the former PoE configuration is restored.
Example
# Update the PSE processing software online.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] poe update refresh 0400_001.S19
Update PoE board successfully
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