To use the korgkromeinnerstorageimage.img file, you cannot simply copy it to a card. You must "burn" or "write" the image to a micro-SD card (typically 4GB or larger).
Use software like Win32 Disk Imager or BalenaEtcher.
Insert your micro-SD card into your computer. korgkromeinnerstorageimage.img file download
If you have flashed the card but the Krome still won't boot, check the following:
Resolves "System Error" messages at startup. To use the korgkromeinnerstorageimage
Ensure you are downloading the image for the original Krome, not the Krome EX, as the internal data structures differ. Troubleshooting a Failed Restore
Select the .img file in the software and target your SD card. Insert your micro-SD card into your computer
Most Korg Krome issues stem from a corrupted internal SD card. Unlike many keyboards that use fixed flash memory, the Krome runs its OS from a micro-SD card hidden inside the chassis.