UTD2000 Series User Manual 
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11.3 Help Menu 
Press the HELP key to go into help menu, then press any key will display the help 
information of this key. 
11.4 Upgrade program 
The USB upgrade program makes upgrade easier and more flexible. To use this function, 
please follow the steps below: 
(1) Download a program file to be updated from internet and store the file in USB.
(2) Turn off DSO and pulg USB into DSO, then turn on DSO.
(3) If  only  one  program  file  is  stored  in  USB,  the  interface  will  display  “whether  or  not
update”, press F3 to update. If two or more than two program files are stored in USB,
the interface of selecting files will appear, press F1 to select a program file to be
updated and press F3 to start updating.
(4) When the update is completed, a prompt of successful update will  appear, please
unplug the USB and turn off the DSO, the program update is complete when you turn
on the DSO again.
NOTE: 
(1) The update time is about 10 seconds.
(2) Do not turn off the DSO or unplug the USB when the program is upgrading, otherwise
the upgrade will fail or unpredicted error will appear.
(3) Turn off the DSO if the upgrade is FAIL. Turn on DSO again to upgrade the program.