The firmware is upgraded to OpenTPCast and its performance is quite good. The vhui64-4.5.1(USB server program version) is more stable than the latest version. If you can't find it, I will provide it. The detail guideline for installation is on below link.The item "TPCast for Oculus CV1 (Wireless VR)" is in sale since Monday, January 13, 2020. This item is in the category "Consumer Electronics\Virtual Reality\Parts". The seller is "dhjeong2011" and is located in Seoul. This item can be shipped worldwide.