The PSA Interface Checker is a specialized utility software used to identify the firmware version and hardware serial number of diagnostic interfaces.
: It allows users to manually upgrade or downgrade the VCI firmware by selecting an .apli file from the software directory. psa interface checker 440 link
: Essential for "Full Chip" VCI kits to utilize the latest features like UDS protocol support. for a specific Diagbox version? PSA Interface Checker and Lexia Version - French Car Forum The PSA Interface Checker is a specialized utility