Report Flirc not working after upgrade to 3.25 in Firmware Bugs Posted September 28, 2020 On 12/21/2019 at 8:57 AM, AcIvI said: It works! Thank you very much for your help. Hi to all, I'm new here and just received my Flirc USB 2. I'll be using it to control my Sunrise TV Box UHD via a Harmony Ultimate remote+hub. Unfortunately, nothing happens. I uploaded the Sunrise_Flirc_updated.fcfg after upgrading the Flirc's FW to 4.9.3 and Flirc app version 3.25.3 on a Windows 10 PC. Any type of assistance would be highly appreciated.