Hi, I have recently switched phones from a galaxy s4 gti9505 and I was planning to sell to my friend. I had cyanogenmod and TWRP installed. From inside android I started a factory reset but once it booted to TWRP it started looping. I have downloaded the CW recovery to attempt to use that instead but when I connect my device in download mode adb devices shows nothing. I have access to windows 10 and OS X 10.10.4. Any help would be appreciated.