I lost my phone in Peru and had to downgrade to my old Nexus 5. It was rooted so I couldn't update the OS. In trying to unroot it, I [somehow] deleted the OS, and now the phone won't boot. I get to the TeamWin recovery options and it will say "No OS Installed, are you sure you want to..." How can I fix this?

Note: nexus 5 does not allow for external SDs to transfer files, etc.

  • Welcome to Android Enthusiasts! No complete instructions (I have no N5), but the basic answer is: download a ROM for it, and flash that ROM. To get you started on the topic, please check with our rom-flashing tag-wiki. – Izzy Apr 20 '17 at 17:15

You need to reflash the stock Google Factory Firmware image for your device with fastboot.

Instructions and images are available here. Make sure to use a quality USB cable... we have had several bricking issues flashing firmware on Nexus 5 devices because of defective or poor quality USB cables.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.