The RF signal delivered to the input of the GNSS positioning chip is attenuated significantly, sometimes to the point where the positioning chip can no longer establish a fix.
Yes.
The failure is not correlated with any activities performed by the firmware.
Unfortunately, there does not seem to be any. We have designed and manufactured an add-on module as a stopgap measure:
It is supposed to be installed on top of the existing LNA SAW footprint. Please contact alexander.sysoev@zubax.com if you need more information (please reference this post in the email).
We are not. We stopped doing so immediately once we discovered the defect. We also made sure to inform Titan Elite and are keeping them up to date on our progress.
We are expecting the new revision to be available by July 2019. As to the detection of latent issues in the future: by definition, it is theoretically impossible to do, just like you can’t detect unknown bugs in your software because by definition they are not yet known. Our recently updated internal policies dictate that all new designs are to incorporate only parts certified by AEC-Q100 grade 2 or equivalent, which we believe is at least sufficient to prevent similar problems from occurring again.