I purchased a Zyxel NR5101 via Zyxel Amazon a couple of days ago and it came with the following firmware/module: * V1.00(ABVC.3)C0 * RG502QEAAAR11A03M4G I set up the device and all appears to be working… There was a firmware update available via the online firmware upgrade option and so I updated the firmware. It's now running: * V1.00(ABVC.4)C0 * RG502QEAAAR11A03M4G I now have a problem with the routers WiFi connection. After a few hours use both the 2.4GHz and 5GHz bands won’t allow any device to connect or vanish completely. Reboot the NR5101 and the WiFi is up and running again. Yes, I have tried factory resetting the NR5101 but it happened again! When this happens the phone port still works as do Ethernet connections. So, the router is still maintaining a data connection with my cellular provider. It's just the WiFi that has failed. I don't think it's hardware related as a reboot resolves the problem and all my devices reconnect to WiFi. I had the WiFi setup as shown below: Band: 2.4GHz * Channel: Auto * Bandwidth: 20/40MHz * Control Sideband: Upper (Can't change this) * WiFi Network Name: ***Changed from default to custom SSID*** * Max Clients: 32 Band: 5GHz * Channel: Auto * Bandwidth: 20/40/80MHz * Control Sideband: None (Can't change this) * WiFi Network Name: ***Changed from default to custom SSID*** * Max Clients: 32 WPS is Disabled and 802.11 Mode is set to 802.11 a/n/ac/ax Mixed. All other setting are at their default values! I have made the following changes to my WiFi configuration in an attempt to resolve the WiFi issue: Band: 2.4GHz * Channel: 3 * Bandwidth: 20MHz * Control Sideband: None (Can't change this) * WiFi Network Name: ***Changed from default to custom SSID*** * Max Clients: 32 Band: 5GHz * Channel: 56 * Bandwidth: 20/40/80MHz * Control Sideband: None (Can't change this) * WiFi Network Name: ***Changed from default to custom SSID*** * Max Clients: 32 WPS is Disabled and 802.11 Mode is set to 802.11 a/n/ac/ax Mixed. All other setting are at their default values! I am now waiting to find out if the changes I have made above fix my WiFi issue. Anyone else experienced this issue? If I can't resolve it, I will have to return the NR5101 to Amazon for a refund! 😔

Hello @WelshPaul I don't know if it will help you or if you want to try it, but the ABVC.3 firmware is available at https://support.zyxel.eu/hc/en-us/articles/4403365084818-Advanced-Downloads-for-5G-devices if you wish to try a rollback. Kind regards, Tony

Oh my... Rolling back the firmware hasn't resolved my WiFi issues after all! 🤬 It works for longer with the V3 firmware but eventually all of my devices lose WiFi and cannot re-authenticate unless I reboot the router. To clarify, I have fill WiFi signal on both 2.4GHz and 5GHz but nothing will authenticate! Ethernet works, phone port works but WiFi just gives up and crashes after an extended period of use. I'm returning mine to Amazon for a refund!

WiFi drops out after a few hours

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WiFi drops out after a few hours

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