You can try to refer to this post the upload the firmware.
http://www.geeetech.com/forum/viewtopic ... 222#p82222
Or you can feedback it to the sales at first.
They will give you more help.

You are correct.jugufu wrote: Thu Feb 14, 2019 1:49 am Hi again,
Thanks for the link but that should not to be the problem.
I like to install the newest software version 1.38.59 because with 1.37.58 there are ploblems when leveling the z-axix.
In the readme from 1.38.59 they wrote "When upgrading through the Smartto Firmware Upgrader Tool, you need to use the V2.x or higher
version of the tool to complete the upgrade correctly."
But Version 2 or higher is not avilable.
Best jugufu