hi,
my job is to provide my customer an identical Ics by copying the program

Okay, at such task you should ask people who have programmed that chip for original *.bin or *.hex file. At least, you must ask them about the permission about duplication their program yourself. Now the reasons:
- commercial software may not be duplicated with a third-party firm;
- generally, software placed into MCU/external hardware is protected from reading (with protect bits, secure array, CRC, serial number etc) and so in most cases it is not possible to copy it with simple read-then-write operation.
My suggestion is: call original software authors and drop this idea to duplicate chips yourself.

Regards,
Oleg