I mean DOWN to older version and UP for newer version, so if you have already [[2.5.1.11.rps]but not working] then first downgrade of version by using this version: https://source.puri.sm/Librem5/redpine-firmware-nonfree/-/raw/master/files/firmware/RS9116_NLINK_WLAN_BT_IMAGE.FW2.3.2.3.rps
reboot
now upgrade to: https://source.puri.sm/Librem5/redpine-firmware-nonfree/-/raw/master/files/firmware/RS9116_NLINK_WLAN_BT_IMAGE.FW2.5.1.11.rps
make sure delete all rps(BLOB) file everytime to updating the firmwares to prevent conflict.