How to change setting of Bluetooth module?

How to change setting of Bluetooth module?

1. To get the info of bluetoth:
“AT+VERSION”
2. Change PIN code
“AT+PIN1234”
*pincode is 1234
3. Change Name of BT:
“AT+NAMEAPPLE”
*Name as APPLE
4. Change Baudrate:
“AT+BAUD1”
*as Baudrate 1200bps

Bluetooth baudrate class:

1——-1200
2——-2400
3——4800
4——9600
5——19200
6——-38400
7——57600
8—–115200
9——230400
A—–460800
B—–921600
C—–1382400