@JaapHoutman No date has been set. Also, since the latest firmware (1.5.6) was released on the 1st week of February, the 1.6.0 update is at least 4 months away.

@JaapHoutman I think all of the Deco M4s currently being sold are V4. For clarification, if you go to buy a Deco M4, it'll show the hardware version on the packaging. FYI, the features in Deco M4...

@Nictzw Yes, it should be possible. However, you also need to configure your Deco M5 according to the connection type (Dynamic IP, PPPoE, Static IP etc.) Please refer to the quick installation guide...

@Uilenpol Please post here in English. And What did you mean mean by "changing/strengthening the router"???

@Yosea One of the reasons is already mentioned by David-TP. The other one is, the latest firmware for Deco M4 is 1,5.6

@Yosea Your firmware version looks like a customized one (from your ISP or the company you bought it from) If that's the case, you need to contact them for the latest firmware with security option