So, you've flashed a bad ROM or ZIP file, and now your Nexus 7 won't boot up. Maybe it just went haywire for no reason. Whatever happened, the bad news only keeps coming—you didn't make a backup of your system, contacts, or apps.
The issue of device backups has been brought up many times before in the Nexus 7 SoftModder forum, and I figured it's about time to do a decent guide. This will walk you through the steps needed to quick and easily backup your Nexus 7, so let's begin!
Backing Up Your Android OS
You'll need a custom recovery for this.
If you don't have a custom recovery or know... more