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How to install Android 5.0 Lollipop NamelessROM on Galaxy S3 I9300
Step-1: Connect and mount Galaxy S3 USB memory on the computer using
USB cable. Now move the downloaded zip files to the SD card of the
phone. Ensure the files are in the SD card root, not in any folder
Step-2: Disconnect the phone from the PC and switch it off
Step-3: Enter recovery mode. To do so, switch on the phone while pressing and holding Volume Up, Home and Power buttons together
Step-4: In recovery mode, perform a full data wipe by selecting wipe
data/ factory reset. Use
the Power button to select while in Recovery
Mode
Step-5: Perform a cache wipe by selecting wipe cache partition
Step-6: Perform a wipe of dalvik cache. This is optional but it is
recommended so that the phone will not get into boot loops or any other
errors. From recovery, go to advanced then select wipe dalvik cache
Step-7: Return to the main recovery menu and select install zip from
sdcard then select choose zip from sdcard. Using the Volume keys
navigate toNamelessROM, which was earlier copied to the Phone's SD card.
Select it using the Power button and confirm installation on the next
screen
Step-8: After the ROM is installed, repeat the similar procedure to install Gapps file on the phone
Step-9: When the installation process is completed, return to the
custom recovery screen and reboot the phone by selecting reboot system
now
Your Galaxy S3 should now be running Android 5.0 NamelessROM.
Navigate to Settings>> About phone to verify new software version
of the phone
