I performed follwing procudure

1. create certificate_request.xml using [generate certificate request] function

2. i set two duid

one thing is virtual duid i got that on [develop.samsung.com] site

other one is serial no of actual device (gear2). i got that using [/sdb get-serialno] command

3. send [cetificate_request.xml] to [gear2.sec@samsung.com] and got [certificate_registration.xml]

4. execute [regstration certificate] function

5. set [security profile] on [preference –> tizen sdk –> security profile] tab

6. import sample App

7. run on actual device using [run] function

and occur [signature_invaild] error

please advise me. if my procedure is wrong.

thank you for help