1, open Ledset point "settings." 2. Click on "Hardware Maintenance" and enter the password "cfxoki" or "admin" to bring up the "Hardware Maintenance Upgrade" window. 3. Click "Load" "Browse" to open the upgrade file. 4, select the chip model (such as ICN2 0 53 chip click ICN2 0 53 chip corresponding to the corresponding version of the receiver card upgrade program) 5. If the universal chip is opened, select the corresponding version upgrade program of the corresponding model receiver card (such as the 4008 or 400C program of the RV9 08 receiving card). 6, to load the specified program, find the file selected and click Open. 7, after loading the file click "upgrade" 8, After upgrading to 100%, click " 9, after the completion of programming to receive the card off, restart the green light flashes to complete. Technical index oxygen machine portable, oxygen machine for sale, oxygen machine amazon, oxygen machine for covid, oxygen machine india Jiangmen soundrace electronics and technology co.,ltd. , https://www.soundracegroup.com
"You can select "Receive Card" and click "View" to check the version number to see if the upgrade has been successful. 
Methods: oxygen pressure swing adsorption
lnhalation: ear oxygen inhalation, nasal oxygen suction
Input power.150w
Rated voltage:AC 110V/60Hz
Rated current:1.4A
Oxygen concentration: 30%-90% adjustable (rnom temperature,0.1MPa)
Oxygen flow:2-10L/Min
Oxygen pressure:0,03-0.06L/MPa
Carbon dioxide: according to the prescribed method of test qualified
Carbon monoxider according to the prescribed method of test
PH: according to the prescribed method of test qualified
Shape identiication: dorless, colorless gas,a combustion supporting force
Running noise:<45dB
Product size:358×231x321mm
Product net weight:6.5Kg
Electrical classification: class B
Display control:LCD screen display intelligent chip control, wireless remote
control