Unlike my other topic, I also own a R4 Revolution. It once worked, doesn't seem so. So a while back, I wanted to update my fireware and I did so. Before I did it, I had a feeling something weird might happen, so I saved my old junk into another folder, containing my old firmware and everything else. So when I did it, like I guessed, it failed to boot up, just continued with the loading screen. So I went to put my old junk back in the R4 including the firmware and what happens, it doesn't load up. So I spent countless hours trying to fix it, getting different firmwires and trying to see what was wrong with it. It fails to load, just stays on the loading screen. Most of my other friends who own an R4 say it is broken, do you agree? And unfortunately, at that time, my computer broke and I've lost that SD card...(I'm an idoit and so is HP)So I won't be to much help with remembering the old firmwire and some questions. I'd appreciate any help, thx.