OpenThread ot-br-posix is now Thread 1.4 compliant, but current S200 firmware is not updated about a year and included ot-br-posix version is outdated about an year and half, supports Thread 1.3 but not 1.4.
Hope to see support for Thread 1.4 and GL SDK 4.8+ based firmware updated not so far.
Hi,
Thank you for your suggestion.
We will submit it to the product team for discussion.
Hey, I’d like to join the request for updates. I purchased GL-S200 without checking the update history first and then I got a bit worried when I saw the last update happened almost 2 years ago.
Hi
Thank you for your feedback. We will also pass this on to the product team.
another question, there’s glinet app to control routers and separate S10, S20 apps to control IoT gateways, but S200 seems not applied neither of them 
I am also interested in an update to the S20 for Thread 1.4 support. I use the S20 with Home Assistant and they recently deployed beta support for Thread 1.4. It looks like it may be supported soon. I would like to continue to use the S20 as a redundant TBR however, I do not want to run it in a mixed network.