We want to upgrade the firmware of old RUT900, serial/mac: 08166555 00:1e:42:15:23:81
The problem is that the auto-reboot feature looks like not working, sometimes we need to power off (disconecting the power adapter), and power on again, because sometimes it looses the 3G connection and never recovers, regardless we have the auto-reboot feature to reboot it daily at night.
So my question is if the actual firmware is valid for an old device (serial number 08166555)
Thank you
