RBR50 drops internet connection at exact point random devices connect

[RCGuy666]

We've had this system installed for more than a year now - never with great reliability.  Main issue is that during 'normal operation' during the day - the moment any random device connects (like powering on a laptop) we lose our internet connection.  This can be starting a large download on phone, or simply turning on an Ipad or tablet. 

Remedy is to reboot (power down then up) our Xplornet modem.

When we lose the internet the ring glows magenta.  Rebooting only the RBR50 usually does not restore the internet.  It's as if when this happens - it locks up the Xplornet modem.

I see many similar issues - is there a remedy?

Running firmware version V2.5.2.4 (main + satellites)

Satellites approx 30-50 feet from main

[FURRYe38]

What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?

One User Experience/Configuration:
https://community.netgear.com/t5/Orbi/Most-Stable-Orbi-Configuration/m-p/1941087/highlight/true#M970...

Has a power off for 1 minute then back ON with the ISP modem and Orbi system been performed since last update?

[RCGuy666]

It's an Xplornet LTE modem panel mounted on a 50' tower beside my shop. The reset consists of unplugging the POE power supply that connects to it, then plugging back in.

I can try logging into the panel tonight and see what info I can find.

[FURRYe38]

There have been some posts regarding v4 FW and some bad experiences, you might upgrade to something more recent:

https://community.netgear.com/t5/Orbi/RBR50-RBS50-Firmware-Version-2-6-1-40/m-p/1997895/highlight/tr...

[RCGuy666]

Ok thanks!  I'll look at updating the firmware this evening.  Will post results if this works.

[FURRYe38]