Are you in envy of others that are running the latest Android 5.0 (Lollipop)? Do you want to get it on your Nexus 5, but you don’t have a computer? Well I got some good news for you, you can get it. It’s fast and easy. Here’s how: You will want to make sure you have unknown sources checked in the settings.
First, You’ll need to get Root Access. The easiest way to do that is to download Towelroot. Install > open > hit “make it ra1n”. Once it does its thing you will want to download SuperSU from the Play Store.
Second, You’ll need to install a custom recovery. TWRP is my preferred choice. Head on over to the Play Store and download Flashify. Open > Recovery Image > Download TWRP > Choose the lastest version (Currently 188.8.131.52) > Yup!
Step 3: Dowload the N5 TWRP Backup LPX13D > Unzip to the root of sdcard (or somewhere you can find it easy)
Step 4: Reboot into TWRP recovery. Turn off phone > Hold Vol Down + Power (You’ll be taken to bootloader) > Tap Vol Up or Down twice (either way works) until you get the option Recovery Mode then press the Power Button.
Step 5: Create a backup. To do this select Backup > Mark System + Data + Boot.
Step 6: Move the backup of the LPX13D Preview into the backup folder in TWRP that you just made. Advanced > File Manager > sdcard > Find your N5 TWRP Backup LPX13D file > Click on it > Click Select on the bottom right > Move > sdcard > TWRP > BACKUP > click on the folder in there which should be a bunch of numbers and letters > Click Select again.
Step 7: Restore the LPX13D backup (Warning: This will reset your phone). Restore > Select the LPX13D backup > Swipe to Restore.
Step 8: Reboot and Enjoy!
I spent hours of failed attempts to get mine to work correctly. This is the end result. Hope you guys enjoy the Android 5.0 Dev Preview. I know I am. Just be sure to be patient during the process and do this at your own risk. I do not take responsibility if you mess something up.