The error means your current development environment (e.g., Arduino IDE, PlatformIO, IAR, Keil, or a vendor SDK) for the MT68 platform.
Search GitHub for arduino-mt68 or platformio-mt68 . platform mt68 not supported on this version
: Devices that have been modified or customized might not be compatible with standard software/firmware versions. The error means your current development environment (e
: In the MediaTek ecosystem, chipsets are often labeled with internal codes. For example, the platform mt68 not supported on this version