I have a CSR8675 and I want to set a PIN for pairing device. I found that I need to change PSKEY_LOCAL_SUPPORTED_FEATURES at PSTool. Default value for it was feff fe8f ffdb 875b. People say I need to change it to ffff fe8f ff9b 8753. But when I do this CSR8675 not even start until I revert changes. Tell me please how can I set PIN code for pairing?