The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
Fixed an issue where SRM might fail to select DFS channels on RT1900ac.
Fixed an issue where Smart Connect might not work properly when connected devices do not support 5GHz connections.
Fixed an issue where 5GHz Wi-Fi might not work properly on RT2600ac and MR2200ac.
https://archive.synology.com/download/S ... ck/7742-4/