Thanks for this! I was wondering why my bluetooth mouse was not working. In my case (Byzantium recently flashed), I had to change it back to dev_oper_mode=13 to re-enable BLE and it is working.
This is my firmware:
[ 1641.883419] redpine_91x: ================ RSI Version Info ==============
[ 1641.883423] redpine_91x: ´================================================
[ 1641.883427] redpine_91x: FW Version : 1.2.20.0
[ 1641.883434] redpine_91x: RSI FW Version : 0000.1.2.0.0502
[ 1641.883440] redpine_91x: Driver Version : RS9116.NB0.NL.GNU.LNX.OSD.2.0.0.0024
[ 1641.883445] redpine_91x: Operating mode : 13 [Wi-Fi STA + BT DUAL]
[ 1641.883449] redpine_91x: Firmware file : RS9116_NLINK_WLAN_BT_IMAGE.rps
[ 1641.883454] redpine_91x: ================================================```