How to solve VXDIAG VCX NANO Firmware Update Failed?

Problem:

My vxdiag vcx nano volvo interface has got quite old version firmware 1.5.1.0 as i see the latest goes to 1.6.6.0.  I tried to update the firmware but it failed me and reported an error “Firmware update failed”. Device was connected and communication indicators turn on.  Any idea?

Vxdiagshop solution:

Firmware version is too old to directly update to latest version.

First download firmware file 1.5.2.exe and install.

https://mega.nz/file/SnA30Kxb#2Jb9G6btO1WG3OQ5b8HJ8nUWgK-I020Y8wChvfo8eWI

Then update firmware from 1.5.2 to latest version.

*The solution can be applied to all vxdiag scanners with older firmware version than 1.5.2.