How to flash CM10.2 on GS3 w/MK3 baseband
This tutorial will show you how to flash CM10.2 on the Sprint GS3 in just 10 easy steps! Follow the steps and make sure to check the video out as well!! ENJOY!!!!!!!!!!!!!!!!
*****CREDIT GOES TO MR. STRUCK FOR THE INFORMATION GIVEN*******
Link to video tutorial
You must first root your phone to get Philz Touch Recovery 6.
Link to Root
Once you have rooted your device and have successfully gotten Philz recovery on your device you must make a nandroid backup. After the back up has been completed, you must download both the rom and gapps.*******I RECOMMEND DOWNLOADING BOTH FILES TO DESKTOP FOR EASY ACCESS******
Link to ROM
Link to GAPPS
Once you have downloaded both the rom and gapps you must download WINRAR to view the files inside the zipped folder. Any zip manager will work but heres a link to the Full Free winrar download.
Link to WINRAR
After you have installed WINRAR you must next download NOTEPAD++ to edit the rom files.
Link to NOTEPAD++
Once NOTEPAD++ has been downloaded you must navigate to where the rom file was downloaded. Once you have found the zipped rom file, open it with WINRAR and navigate to: /META-INF/com/google/android and open the updater-script file with NOTEPAD++
Once the updater-script file is open you must highlight all the lines above: mount("ext4", "EMMC", "/dev/block/platform/msm_sdcc.1/by-name/system", "/system"); This line should be number 10. Delete everything above it making this line number 1.
After you have deleted all of the unnecessary lines close out of NOTEPAD++ and click yes on the prompt. WINRAR will to bring up a prompt, just simply select yes and drag both the ROM and GAPPS to your internal/external storage.
After both files have been placed into either the internal or external storage, power off your phone and enter recovery mode. To access recovery mode you must press and hold volume up first, home button second, then power button until blue text appears on the upper left hand corner of the screen.
****You should have already performed a nandroid back up before proceeding. If not please do so now!!****
After recovery has booted navigate to wipe data/factory reset to prepare the device for a new rom. After the factory wipe has been completed you MUST navigate to the advanced option and select wipe dalvik cache. Once that has been completed, navigate to install zip to locate the rom file and gapps file. You must flash the rom file first before the gapps file to prevent damage to the phone. After the rom file has been flashed continue with flashing the gapps.
After the rom and gapps files have been flashed you may reboot the system and continue with the setup of the device.
IF THIS TUTORIAL HELPED PLEASE LEAVE A LIKE AND IF YOU HAVE ENCOUNTERED ANY ISSUES PLEASE POST A COMMENT OR PM ME FOR FURTHER ASSISTANCE THANKS!!