I’ve been using the RUTX50 for the past couple of weeks with no issues; 5G NSA, n78 band, pulling 250-300Mbps down, 50-100Mbps up…
Today I decided to upgrade the internal modem firmware to RG501QEUAAR12A08M4G_04.200.04.200 (previously 12A07). Unfortunately the modem is now no longer connecting to 5G and is instead failing back to 4G LTE.
If I reboot the modem, I see that it connects to 5G NSA briefly and then immediately disconnects and fails back to 4G.
How can I go about downgrading the modem firmware to the previous version?
In terms of the RUTX50 firmware, I have been using the latest RUTX_R_00.07.04.4. But it is only with the upgrade of the internal modem firmware that I’ve now got an issue.