I have tried using recovery to clear my system cache but I keep getting the android laying on its back with an exclamation point in a red triangle. I have read on the forums to hold them volume up and down for 10 seconds to get past this, this has not worked for me. Also have seen it said to hold down for 5 then hit up, and then hold down for another 5-6 seconds to bypass the screen. This has also not worked for me. Any suggestions?