cfg file from firmware image downloaded above by clicking on Image Folder button,Ĭlick on Start download button and power on the SIM800 module and download should start Select the Firmware update method to USB,īrowse and select the. Select the SIM800 module which you have on your board, Once you have connected the USB lines of SIM800 to your PC, Open up the SIM800 firmware update tool you downloaded above, So that, later when board is ready you can just plug in the USB cable and update the firmware of the SIM800 module straight away. If you have designed or thinking to design a board using any of SIM800 modules then it would be wiser to leave out the above mentioned USB lines to a USB connector. UART Interface : Slower, Needs 3 lines of SIM800 module, UART_TX, UART_RX, PWRKEY and GND connectionįor updating the firmware through the USB lines of SIM800 we need to connect the USB data lines ( USB_DN, USB_DP) and USB power line ( USB_VBUS) to a PC or laptop using a USB connector. USB Interface : Faster, Needs 3 lines of SIM800 module, USB_DN, USB_DP, USB_VBUS and GND connection We can program a new firmware image to our SIM800 module using either UART interface or USB interface. First download the tools, files and documents used for the firmware update from the below links,
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