Fixes issue with "Record File Error" that causes user to format SD card.
1. Download firmware to your PC
2. Unzip the file which will produce 2 firmware files
3. Transfer files to a clean, formatted SD card.
4. Insert SD card into your monitor
5. Settings > firmware upgrade and proceed with monitor instructions.
6. After upgrade, depending on your hardware, go to Settings > Information and ensure the firmware is now A2.4.6