: If your unit is from a known brand, check the Joying Firmware Blog or Dasaita Support first.
: Ensure the file is in the "root" of the USB and that the USB drive is 32GB or smaller. Larger drives sometimes fail to read. cvd1810 wj update link
: After the update, it is highly recommended to perform a factory reset. Note that you may need a factory password (commonly 8878 , 3368 , or 1617 ) to reconfigure your CANBUS and button settings. Common Troubleshooting : If your unit is from a known
: After an update, you often need an internet connection to reactivate ZLink. : After the update, it is highly recommended
: If sound disappears after an update, check the Factory Settings under the "AMP" or "Audio" options to ensure the correct output is enabled.
: If your unit doesn't detect the file, try creating a folder structure on the USB: mnt/media_rw/udisk/ and place the update.zip there.