I bought the HTC Vive a few months ago. On 6th May I updated the firmware of the lighthouses. As result, one of the lighthouse did not start anymore at all. All trials to solve this as found in the forums and by the support were not successful. I wonder why HTC is not able to implement a firmware update which is working or at least to reset the hardware?
Therefore HTC asked me to send the lighthouse to their repair center. I did so and got the lighthouse 2 weeks later back. Result: The lighthouse is not working, this error is shown "Lighthouse has a manufactoring error". Furthermore they did not update the lighthouse to the newest firmware in their repaircenter (?!).
I contacted the support again and asked why they do not test their hardware before the send it back. I never got an answer to this question. They sent me again a UPS Ticket and I sent the lighthouse again to the HTC repair center. Now I got it back, and guess what? Same result: Lighthouse is not working, same error as above and again old firmware.
I can hardly imagine that HTC provides such a low quality: Twice NOT testing a repaired lighthouse, Twice not upgrading the firmware. The only option left is that HTC has not interest at all to do repairs and don't care when their hardware is not working, even HTC made it with their firmware unusable.
Conclusion: Think twice, whether you really want to buy a HTC Vive