I’m gonna use the Xhorse Multi-Prog Programmer to read BMW 5 F10 CAS4+ 5M48H D-FLASH & P-FLASH on bench. And it worked.
Open Multi-Prog Software,
Select car model >> Connection diagram
Follow the diagram, connect ECU to Multi-Prog and computer.
Read D-FLASH.
Read success, save D-FLASH data file.
Read P-FLASH.
Read success, save P-FLASH data file.
Quite an easy job.
Done.