upgraded my mod with the provided firmware..
Remove batteries from the mod. plug microusb cable into the back of the computer (don't use front panel ones.. if it disconnects for any reason during a flash you will prob brick the mod)
Plug micro usb cable into the port (after unplugging rubber 'stopper' blocking the port in the mod)
Trigger press 5 times to turn on (you should be running on usb power at this point batteries removed)
Trigger press 3 more times after the mod is booted to enter setting menus.
Navigate to settings option, Long press the fire button to select it.
Navigate now to the Download option. Long press the fire button to select it.
Mod should look like it turned off. Windows (win10) should have the 'new device connected' sound.
Ensure from this point on the micro usb does not accidently become unplugged from either the computer or mod. Don't touch it.
Unzip the .zip file provided. to a directory.
Run the executable file 'NuMicro ISP Programming Tool.exe' (the .exe extension may be hidden by default settings)
Click on the connect button located on the Connection check tab
Next click on the APROM button
A dialogue box will open up .. select the drop down and select .hex
Then Select the file located in the directory as follows double left click or highlight and select open:
Then select Start (note that this image is from an already upgraded mod connected so what you see may vary depending on which version you are running. note: once your press the Start button.. if you disconnect.. bump or in anyway interrupt this process you will likely brick your mod. Be very careful that you, your cat, kid w/e isn't near it.
The upgrade should be completed. Exit out of the program. Unplug your device after the success message. Reinsert your 4x 18650's, enjoy the upgraded mod.