Unzip the downloaded firmware folder. You will usually see files with extensions like .bin , .txt , and sometimes folder structures.
: Copy the entire QD_Update folder to the root directory of your USB drive. Insert & Update : Plug the USB drive into the printer while it is off . Turn the printer on . Navigate to the Settings (suitcase icon) > About . qidi xplus firmware install
: Ensure the nozzle height is correctly set. Unzip the downloaded firmware folder