I have experienced often intermittent connections when connected to my deco wifi. From 1 minute or more to send an iMessage, delayed push notifaction on my iPhone that would take up to 2-3 minutes to

Is the Deco S4r same with the S4 in term of firmware update? Since, my s4r is an eu version would it be possible to update it? I have not seen any post regarding the S4r. There is currently a new firm