Go to Apply Update -> Apply from ADB . On your PC, type: adb sideload crDroid-version-filename.zip
for crDroid didn't start in a corporate office, but as a hobby by developer Cristiano Matos in late 2012. Originally created for the Samsung Galaxy S III crdroid recovery.img
crDroid recovery does not support flashing multiple zips sequentially. After booting into the ROM once, you must: Go to Apply Update -> Apply from ADB