A 2021-updated image file (often around 122MB to 128MB) specifically for firmware 5.017.
This can occur if the tool is connected to the internet while software is running, which may damage the NXP chip. If replacing the SD card doesn't work, the NXP chip itself may need a rework.
Insert the blank card into your KESS unit and connect it to your PC. Open K-Suite ; it may throw an error, but this process often generates a unique hardware key on the SD card.
This utility is required to combine the key file with the decrypted image into a format the KESS hardware recognizes. Step-by-Step Replacement Guide
This usually indicates the software cannot find the protocol files on the SD card. Ensuring the KSuite/Update folder content is correctly placed on the card can resolve this.
Use WinHex to read the SD card and copy the specific key block (often located at offsets 000000D0 - 0000019F ) into a new file named "Key".