Here’s a detailed content piece about “crDroid boot.img install” — explaining what it is, why you’d do it, and a step-by-step guide.

Then copy it to your PC. This is your lifeline.

Note: Some guides suggest fastboot boot boot.img (temporary). For a permanent crdroid bootimg install, you must use flash, not boot.

Backup Your Stock boot.img

Before flashing crDroid, always:

crdroid bootimg install