This article provides the steps required for administrators to upgrade the system image in a Kerio Control NG box using a USB flash drive, which can be helpful when upgrading the device with no access to the console.
Note: The upgrade is not repeated if a restart is performed with the flash drive still in the USB port. Once the operation is finished, the flash drive can be unplugged, and all data and settings will be preserved after the upgrade.
Warning: There are two types of USB flash drives on the market. Kerio Control NG 500 requires a flash drive formatted with a Master Boot Record (MBR). USB drives with floppy-type formatting cannot connect to Kerio Control NG 500.
Insert the flash drive into a USB port on your computer.
Note: Make sure that only one partition with the
FAT32 (VFAT)file system is created on the flash drive. The USB disk must not be formatted by the
Download and save the kerio-control-usbupgrade file into the flash drive.
Turn off the Kerio Control NG box.
Plug the USB flash drive into a USB port of your Kerio Control NG box.
Turn on the Kerio Control NG box. The upgrade starts automatically once the device is turned on. When the upgrade is completed, the Kerio Control NG box reboots to the new version.
Remove the flash drive from the Kerio Control NG box.
Kerio Control is upgraded to the new version after the reboot, and the new version is displayed in the Advanced Options section of Kerio Control's administration interface.