Hello James, you could kindly follow the instruction below to update to the latest firmware. And you could update without the INNOVV App.
1. Click the link via https://www.innovv.com/downloads to download the latest firmware named K2.bin to your computer
2. Copy the K2.bin file to an SD card which shall be in FAT32 format. The file name must be the original name and other
names could not work, such as K2(1).bin or K2(2).bin.
3. Insert the Micro SD card into your INNOVV DVR.
4. Power on your INNOVV camera system and the firmware will be automatically updated with the red light flashing erratically.
Once update is successful the blue light will be flashing on a regular basis appx once a second. If for any reason the update is not successful, please repeat the update.
You are welcome. May you have any other question, please feel free to contact us.