Hi, I have a white r4 SDHC dual-core card and it has an explosion symbol on the top right-hand corner with the word NEW in it. Its also a pretty old card, maybe 2013. I have spent countless months putting different firmware and kernels and woods and everything that corresponds to it and it no go. When I boot it up it just shows a white screen. Any help will be greatly appreciated. Even though the files say long time ago, its only been like 3 days since i formatted it the last time.