drebbe

I have two flircs, I've loaded the same fcfg file to both and both are controlling two different Chromeboxen running OpenElec 6.01, the flirc with 3.3 firmware works on both, another flirc with 3.7 firmware works on neither. I tried using a URC MX-870 and MX-780 and the results are the same with either remote. Is it possible to downgrade to firmware 3.3? If not, is there another alternative?