Did you do: change the operation mode to dev_oper_mode=14?
I still have dev_oper_mode=5:
$ cat /etc/modprobe.d/librem5-devkit.conf | grep dev_oper_mode
options rsi_sdio dev_oper_mode=5
options redpine_91x dev_oper_mode=5 rsi_zone_enabled=1 antenna_diversity=1 wlan_rf_power_mode=0x00