INNOVV C5 & K2 only support 64GB or 128GB SD card in FAT32 format. 

Windows can not format more than 32GB in Fat32.

EaseUS partition tool is the best FAT32 format tool to format SD card to FAT32. 

Note: Formatting will delete all your data, please be sure to backup all your files before starting the job. ​

Click Blow Icon to download Partition Master and follow the instruction to install in on your PC.