Hello, Perhaps something in this video will help.
The MacOS part begins @5:33…
Also saw this…
" Note
For Mac OS users, you need to type “chmod +x ./tone_dfu_tool_macos” to create an executable firmware upgrade tool"
From Khadas Docs, Tone1 section, under upgrade the firmware, scroll down until you see the following title.
" Tone1 - Upgrade to Official Khadas Firmware via legacy methods"
Underneath of that title you will see a tab for MacOS…
I know these directions are in the Tone1 section, but they are mentioned in the video, and even the directions mention the Tone 2 Pro. Do keep in mind, when the directions point you to a Tone1 directory, you need to adjust that to navigate to a Tone 2 Pro directory.