/usr/share/vpb-driver/fetch-openline-firmware is in vpb-driver-source 4.2.59-2.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 | #! /bin/sh
set -e
FIRMWARE="vpbmain_pci.out"
FIRMWARE_DIR="/usr/share/vpb-driver"
FIRMWARE_URL="http://www.voicetronix.com.au/Downloads/firmware/$FIRMWARE"
WGET="$(which wget)"
if [ -z "$WGET" ]; then
    echo
    echo "  You will need to install wget to run $0"
    echo "  Alternative you may just manually fetch:"
    echo "  $FIRMWARE_URL"
    echo "  and install it to: $FIRMWARE_DIR/$FIRMWARE"
    echo
    exit 1
fi
if [ $(id -u) != "0" ]; then
    echo
    echo " You must be root to run $0"
    echo
    exit 1
fi
mkdir -p "$FIRMWARE_DIR"
( cd "$FIRMWARE_DIR" && $WGET -nc "$FIRMWARE_URL" )
 |