Updating Kerio Control using a USB flash drive

Kerio Technologies provides a system update tool that uses a USB flash drive.


We recommend using these tools for Kerio Control Box and Kerio ControlSoftware ApplianceA special operating system designed to run on a computer.. In this article, Kerio Control refers to Kerio Control Box or Kerio Control Software Appliance.


This article describes Kerio Control Box 1000/3000 series. For Kerio Control NG series, read Updating Kerio Control Box NG series using a USB flash drive.

The Update tool is designed for a single use. An operation does not repeat if you restart with the flash drive still in the USB port. Once you perform the operation unplug the flash drive.

Updating Kerio Control

To upgrade Kerio Control:

  1. Download the file kerio-control-usbupgrade.
  2. Insert the flash drive to your computer into a USB port on your computer.
  3. Make sure that only one partition with file system FAT16 or FAT32 (VFAT) is created on the flash drive. The USB disk must not be formatted by file system NTFS, ext2, ext3, or ext4.
  4. Save the file kerio-control-usbupgrade to the flash drive.
  5. Switch off Kerio Control.
  6. Plug the USB flash drive into one of the USB ports of your Kerio Control.
  • When upgrade process begins, the box beeps once.
  • When upgrade process ends, the box beeps once.
  1. Switch on Kerio Control.
  • When Kerio Control boots, the box beeps twice.
  • When Kerio Control Engine starts up, the box beeps three times.

Kerio Control is up to date, and all settings and data are saved.

If the steps above do not work, try another flash drive. Different Kerio Control Box models require different USB drive formats:

  • Kerio Control Box 1110, 3110, 3120, and 3130 require a USB flash drive formatted like a floppy disk (not partitioned).
  • Kerio Control Box 1120 requires a flash drive formatted with a master boot record (MBR). USB drives with floppy-type formatting cannot connect to Kerio Control Box, but can be reconfigured to work. See Formatting a USB flash drive with MBR.

Related articles

Recovering your Kerio Control password using a USB flash drive

Diagnostic tools for Kerio Control Box

Restoring Kerio Control default configuration using USB flash drive