I've converted many standard vbars from 5.3 to 6.0, but this is the first time I've gotten an error.
I hook the mini vbar up to my pc and start the 5.3 software.
I go to File > Online Update, and the popup window shows 3 entries - 5.3.4 express, 5.3.4 Pro (which has the red checkmark) and 6.0.7
I click on 6.0.7 and then LOAD and I get an error - Error at loading Firmware. Option not available.
On the VStabi site under My Devices I see the unit in question, it is registered to me.
I click the Show Options icon and it shows below:
It looks like it's showing 6.0 is already installed, but the software clearly shows it's running 5.3, and I'm currently flying it with a Spektrum satellite on a JR radio.