bluetooh programing

Hi, I know there's a lot of topic about this problem but I could not find any solution. I want upload sketches via bluetooh module OEMSPA310i . Module is fine for serial communication with microcontroller. I try use RTS pin connected via 100n capacitator to Reset pin (flow is controlled by RTS/CTS. CTS is grounded) - without success.

-- Sorry for my english.