Connection troubles with NR7101 after every 24 - 48 hours

I have sent a question to Zyxel!

V1.00(ABUV.6) & R11A07M4G

Had a drop in connection soon after update but then 10 days without issues.. good?

Blackbird said:

I have a weekly reboot and so I have now since 3 or 4 weeks no problems with V1.00(ABUV.6) & R11A03M4G. I wait for the official R11A07M4G upgrade. 

Wow, didn't notice there was this post around.
Since atm im the most commited and knowleadgeable on this Router, i will shed some light on the matter, maybe it helps.
There is no official modem firmware from zyxel, it's quectel, and you dont need for zyxel to release an official modem firmware, because they DON'T do it.
They just release the dfota that works on their products, but it doesnt mean they build it.
The reasons they don't have official downloads for the device, or the reasons why they didn't update the 5g download page whit latest firmware, probably because none of these firmware are really stable 100%.
the V6 should be release when it gets the stable version, at least on the 5G download page.
About firmware, since the firmware is already not really stable, they don't want to give more chance for breakout to ppl that are not IT technicians.
So, quectel does the firmware, they just do the Dfota to work whit zyxel, but you can also upload whatever latest version available on quectel forums, because they are all original and official, and have nothing to do whit zyxel.
Having said that, if you want, you can have all latest firmware on my drive, im just sharing latest because i keep giving feedback, and they usually give me latest firmware on zyxel, and the same whit quectel.
Latest i have is nr7101_datecode_20220419, build on may.
Will get latest soon, and you will notice a difference. Have fun!
As reminder, always reset after a firmware upgrade, even inside gui you can reset, on backup/restore page. This is true for Zyxel firmware, not modem firmware. usually even just a reboot is enough, and reset doesnt affect modem in anyway.

https://drive.google.com/drive/folders/1RVYbTX4NlLoMDlcjn0Iddlnwx0Zhv-H0?usp=sharing

I'm fine with Openwrt on my NR7101 here. It has a cron job to daily reboot and the package "watchcat" installed which resets the modem in case 4 pings in a row fail to a specific host in order to bring the net online again.

Hello @n_o

Here is a OpenWRT page, see https://openwrt.org/toh/zyxel/nr7101 

Although it is described as not easy, there is a thread at https://forum.openwrt.org/t/flash-on-zyxel-nr7101/116006/72 that talks about the experiences of running OpenWRT on NR7101.
     - some users have got it working on Telekom in Germany, and some on Telenor in Norway.

Not easy though. I have not tried it myself, but users on the OpenWRT forum say that it can be done but describe it as not easy.

Kind regards,
     Tony