Currently running 1.2, but when I try to update to 1.2.5 (and yes, battery is full on both the CBR and my iPhone 8 Plus), it goes through steps 1 & 2, then shows "Restarting", but then I get "OH NO failed to update firmware". Tried this several times, deleted the app, then reloaded it with no difference. I'm running iOS 12.1.4. Also tried the SD card removal/replace with no joy. HELP!
How are you updating it? What SD card? I am on 1.3.0 (I think it's Beta release). I went back and forth couple of times, but each time I just downloaded the code from their web site. If you could download, you may have a memory problem in the MCR or the file is corrupted. The guys at Firefly are busy, but very helpful and competent. Did you try them?