Ew6800 Firmware Update 'link' -

: Do NOT turn off the car or the unit during the update, as this can permanently "brick" the device. Update Instructions

Skip this unless you have a null-modem cable and terminal software like Putty. It is slow (baud rate 9600) and prone to errors. Use USB or Ethernet instead. Ew6800 Firmware Update

Fixes for known crashes or intermittent connectivity issues. : Do NOT turn off the car or

: Firmware patches frequently fix compatibility issues with newer smartphone operating systems. Common Troubleshooting Ew6800 Firmware Update