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.
Mac OS: UseEtcher 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:
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
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.
Activate or upgrade Cloud PBX
Add a new Cloud PBX
Go to PBX Per user
Select a customer and go PBXes tab
Click + to add a new PBX
Select WPBX-CLOUD (WMS5) in Model field
Fill in all other fields
Note: Wait for approximately 3 minutes before proceeding. Your PBX will be activated.
Upgrade your Cloud PBX
Cloud PBX running WMS version 4
To upgrade your newly created or existing Cloud PBX to WMS 5 version, proceed with the following steps:
Reboot the PBX
Update it to the latest WMS4 version (using repository rel40)
Update it to the first WMS5 version (using repository rel50)