I came across an issue here. 

 I am Brazilian and I acquired 3 decos S7 in version 1,20. So far so good everyone has come updated with version 1,4,5. I'm an infrastructure analyst and that's why I took a walk in the community and noticed a beta version 1,5,1 that in theory brings several improvements. This beta version became the official one (even the download link still informing the beta. What bothers me is. It became official in the S7 version 1,20 but what is the difficulty of TP-Link in disseminating the updates in all countries? In Brazil the firmware version to officially download on the tp-link website remains 1,4,5 without any mention of version 1,5,1 and I could only find this version here in the community there is no link where you can observe if there is a stable version only the direct link to the beta provided by a community adm.