Thank you very much dengxinfa :pray:.

I cloned the openwrt master after they integrated your commit.

Compiling and using the FW works great now on the X1200.

Just the LTE signal strength indicator is an open issue right now.

Any hint that point me in the right direction would be greatly appreciated.

In /sys/class/leds I can only see:

ath10k-phy0 → …/…/devices/pci0000:00/0000:00:00.0/leds/ath10k-phy0
ath9k-phy1 → …/…/devices/platform/ahb/18100000.wmac/leds/ath9k-phy1
green:wlan2g → …/…/devices/platform/leds/leds/green:wlan2g
green:wlan5g → …/…/devices/platform/leds/leds/green:wlan5g
red:system → …/…/devices/platform/leds/leds/red:system

I can also read the signal strength of both modems:

root@OpenWrt:~# uqmi -d /dev/cdc-wdm0 --get-signal-info
{
“type”: “lte”,
“rssi”: -36,
“rsrq”: -10,
“rsrp”: -67,
“snr”: 16.800000
}
root@OpenWrt:~# uqmi -d /dev/cdc-wdm1 --get-signal-info
{
“type”: “lte”,
“rssi”: -57,
“rsrq”: -12,
“rsrp”: -90,
“snr”: 4.800000
}

But I am stuck on how to address the signal strength indicator LEDs.