This section covers a few methods to flash firmware onto your Mango.
Connect to your Mango web interface and navigate to (System → Backup / Flash Firmware),
then select your firmware image and press Flash image, on the next page click Proceed to begin flashing.
Connect into Mango and download the binary image to RAM under /tmp. 
(Alter your username, IP and path to match your binary image location)
scp tester@192.168.1.254:/home/tester/openwrt-ipq-ipq60xx-8devices-mango-dvk-squashfs-sysupgrade.bin /tmp
Perform upgrade procedure with configuration reset:
sysupgrade -n /tmp/openwrt-ipq-ipq60xx-8devices-mango-dvk-squashfs-sysupgrade.bin
Perform upgrade procedure without configuration reset:
sysupgrade -c /tmp/openwrt-ipq-ipq60xx-8devices-mango-dvk-squashfs-sysupgrade.bin