So this video purports to show a new firmware for the Radioddity GD-77 which adds several features to the radio including a VFO mode.
PLEASE NOTE this firmware is not yet available on the Radioddity website so upgrade AT YOUR OWN RISK.
It is said to come from a Radioddity employee but I cannot confirm this 100%. The original post is on the 'Radioddity Two Way Radio' Facebook Page.
I will be waiting for some feedback from other users before trying myself as I do not want a bricked radio!!!!!
UPDATE: Firmware and new software now on official Radioddity website - CLICK HERE