Firmware 3.105 will have nightly build, you can try and discuss on forum thread below. https://forum.gl-inet.com/t/firmware-3-105-snapshot-update/12887
*Use the .img file when you upgrade through Uboot. Otherwise, please use the .tar file.
 The latest firmware of our official firmware.
 The testing firmware which is under development.
 OpenWrt/LEDE firmware with Luci admin page only. Our official user admin page is not included.
 Tor firmware.