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Deploy WMS 5 on Hardware, Virtual and Cloud PBXs.

Created: July 2020

Updated: March July 2023


Table of Contents


Upgrade to WMS 5 is supported on: Per User PBXs updated to the latest WMS 4 version with monthly, yearly or 5 year subscriptions. Lifetime per user systems bought  onwards.

Upgrade to WMS 5 is NOT SUPPORTED on: Per Service PBXs and Lifetime Per User PBXs , licenses for these PBXs must be regenerated.

How to update an unsupported system to WMS5: 

  • If your system is a LifeTime or a Per Service PBX, you can convert it to Cloud, follow the procedure present in the guide PBX Licensing and Activation (chapter Move PBX to Cloud)


For upgrade/restore procedure, you need to prepare special USB flash drive:

  • Download image
  • Write image to USB flash drive 



    This will irrevocably delete all files on your USB flash drive, so make sure you do not have any important files on the flash drive before doing this. Be absolutely sure that you are directing dd to the correct drive before executing.

Windows: Use Etcher GUI tool.

Mac OSUse Etcher GUI tool or command line utility dd as below.

Run the following commands, replacing /dev/diskX with your drive, e.g. /dev/disk2. A USB device is normally auto-mounted in macOS, and you have to unmount (not eject) it before block-writing to it with dd:

Code Block
# diskutil unmountDisk /dev/diskX
# dd if=PATH_TO_IMAGE of=/dev/rdiskX bs=1m


Run the following command, replacing /dev/sdX with your drive, e.g. /dev/sdb (Do not append a partition number, so do not use something like /dev/sdb1):

Code Block
# dd if=PATH_TO_IMAGE of=/dev/sdX bs=512K status=progress oflag=sync


To deploy HW PBX, proceed with the following steps:

  • Connect to PBX via serial cable (speed 19200)
  • Insert a special prepared USB flash drive as described in the previous section
  • Turn on or reboot PBX
  • Press a key on the keyboard within three seconds to be able to move inside the boot menu (e.g. Up/ Down key)
  • Select Upgrade to version 5 in GRUB menu
  • Select Upgrade

  • Wait for the system to be updated and turned off automatically

Once the system has started, follow PBX Licensing and Activation Admin guide and reactivate the existing licenses, upload the backup saved previously. Connect the existing USB storage and configure it if needed, DO NOT RE-INIT the storage as all data will be lost.