The DR750S also reapplies your settings upon upgrade so you do not have to update your password or settings. sticker (you can unmount the front camera to reveal it). Note: the X Series, DR900S, DR750S and DR590W Series models have a unique password included in the box and on the camera’s serial no. To connect using the BlackVue App, use the default password “blackvue“. After firmware upgrade Wi-Fi login information will be reinitialized.After the firmware upgrade, please use the latest version of the BlackVue Viewer and/or App.If you format the card from the BlackVue Viewer, it will be formatted automatically in FAT32. The SD card must be formatted in FAT32 format.Please backup all necessary files before formatting the SD card, since all your videos will be erased in the process.