Every time I see a help thread so simple like this, I feel very depressed.
It is very difficult to help a case that is not even clearly described.
if "Micro SD Initial Error!" occurred !!!
1. SD card only support SDHC, not SDXC, SD card must be formatted as FAT32, 32KB file allocation unit size.
2. Not support clone console, such as GB Boy.
3. if you are using a genuine Gameboy Color, please check the CPU suffix.