Sorry to hear about the issue. I just tested GPS with FW version: RUTX_R_00.02.01.1 and it works well, which leads me to believe that this is not a FW issue. Here are a few possibilities and suggestions:
- When you're testing GPS, make sure the antenna is not inside a building. Otherwise, a GPS fix may be very hard to obtain.
- Please inspect your GPS antenna for damage, especially the cable. If the cable was damaged it can short circuit the GPS device. You can also test this by measuring the voltage on the GPS antenna connector. If it works, the measurement should be about 3 V. If it is damaged - 0 V. If that is the case, please follow the warranty procedure. The first step is filling out an RMA form.
- You can send me a Troubleshoot file for analysis. It may provide some insight into what might be causing this. The Troubleshoot file can be downloaded from the System → Administration → Troubleshoot page. Before downloading the Troubleshoot file, make sure GPS is enabled, GPS antenna attached and placed outside. Then reboot the router and wait for about 5 minutes - this will give time for the router to obtain a signal and in case there's a bug, it will be easier to locate if the device is recently rebooted. Please send the file via private message.
I am not sure, however, what you mean by saying there are two branches of RUTX11. I can assure you, there is only one branch. HW versions are sometimes updated, but the same software works on all versions.
Best of luck and please inform me of what you find.
EDIT: the issue was caused by an upgrade from a considerably old FW to the latest version. A FW with a fix is provided in the comments.