Stuck in 'Android System Recovery'!

[Broncowolf]

I am getting rid of my phone and wanted to set it back to factory settings. But now, I am stuck in 'Android System Recovery'. This is what comes up every time I reboot the phone. I don't know how to get out of it and back to normal:

Android system recovery

- Reboot system now
- USB-MS toggle
- Backup/Restore
- Flash zip from sdcard
- Wipe
- Partition sdcard
- Mounts
- Other
- Power off

Build : RA-thunderc-1.1.0-GNM


I've tried to load a flash stock (stockopv.zip). It seems to install. I get a message stating 'Install from sdcard complete', but right before it says this, it says 'ohno... ...'.
After rebooting it just comes right back to 'Android system recovery' and I'm back where I started.

Any help would be appreciated, please!