Not sure who needs to know this and/or if this can potentially be an issue.
I downloaded the latest firmware for the S705 from the official Sangoma site. It appears to have an extra period at the end of the version number.
Product Model S705 Firmware Version BOOT--126.96.36.199(2017-11-16 13:37:00) IMG--188.8.131.52.(2020-09-14 19:08:00) ROM--184.108.40.206.(2020-09-14 19:08:00) DSP--9.0.3(Patch 1.0.16)
You can also see it in the UA
[root@freepbx ~]# asterisk -x"sip show peer 222" | grep Usera Useragent : Sangoma S705 V220.127.116.11.