DAHAO 41 Series, Owner'S Manual, Page: 234 / 268

2.10.12 Update Mode
In function setting interface, press . The
system will ask for the manufacturer ID. Input the
correct ID to enter the software update mode.
The updating software shall be located in the
catalogue “Update” in the U disk.
First click the [select directory] key to
select the directory where you want to upgrade the
software.
Then select and click the ok key to return to
the software upgrade interface and display all the
upgradable software information in the directory.
Click the details key to select the
details of the software to be upgraded.
Click the "confirm" key to return to the
software upgrade interface. Press the "confirm" key
again to upgrade the corresponding software.