Hi everybody, I have installed Ubuntu 13.04 (Desktop version) to Nexus 7(2012). It works but, now I want to reinstall Android, problem is that: I can't boot to recovery. If I push Power on, vol+ & vol- it isn't turning on. When I press only Power on it turns and boots to Ubuntu, how can I flash Android? It was rooted and cwm installed before Ubuntu. Ubuntu isn't installed in dual boot. Thanks for answers.