When I try to go into recovery, I get the Exclamation mark with the android. I found this: I checked and that file is there with permission -r-. How can I fix recovery? I don't want to install any roms until I know recovery is working. I had issues yesterday after trying to install cyan's rom. I had to do a restore. Recovery worked until I did the restore now I can't get into it. I followed this guide Full Update Guide - Nexus One Firmware to CyanogenMod - CyanogenMod Wiki At no time did it mention needing root access. But this link says root access is required. [Recovery] [21-Mar-2010] RA-nexus-v1.7.0 - xda-developers I did not install superboot.