[Galaxy S 4 Q&A, Help & Troubleshooting] ww2916269:
Everything about i9502 ! This is all what you need !

I decide to share what we do for i9502 in China about RECOVERY ROOT and CUSTOM ROM :D

There are two ways to root i9502 : one key root from LBE, or flash custom recovery and supersu zip.

one key root from LBE

original link:http://bbs.lbesec.com/forum.php?mod=viewthread&tid=9813&extra=page=1

download link:http://pan.baidu.com/share/link?shareid=4174314091&uk=3777408402

About how to download file from baidu cloud disk:

1. click "下载(4.94M)"

2.click "普通下载"

other downloads is like the same.

Tips: connect your 9502, open usb debug and run this tool run as administrator , permit your pc operation(usb debug) and wait

It would flash a custom recovery and install LBE root manager (some tool like Supersu or superuser)

REMEMBER: after reboot, go to LBE root manager and uncheck all other stuff except "root manage"/"授权管理" and then reboot, or root will not working. This is because LBE root conflict with LBE firewall/defense in the app.

However this bug may confuse you, so you can just reboot to recovery and flash supersu.zip, which is introduced blew.

Recovery:

This is a custom Chinese CWM Recovery 6.0.3.2 for i9502 and exFat supported, plz flash it as pda via odin.

Download link is blew:

http://pan.baidu.com/share/link?shareid=78577642&uk=872783661

Original link is : http://www.wanjiquan.com/thread-30581-1-1.html (all credit to wanjiquan and 凌凌漆)

ROOT

after flash recovery, reboot into recovery. It's a total chinese recovery but if you have used cwm recovery, it's not too difficult for you to find the right option.

1. choose a zip flash like this: "选择ZIP刷机包"

2. chosse the first one like "从SD卡中选择一个ZIP格式刷机包"(inner storage) or the last one like "从外置SD卡选择ZIP文件"(ExtSDCard)

3. flash the UPDATE-SuperSU-v1.45.zip via recovery. download link is http://download.chainfire.eu/343/SuperSU/UPDATE-SuperSU-v1.45.zip

4. reboot and now you have root

CUSTOM ROM

1. flash the newest offical rom first, I recommand the newest offical rom CMG2 or BMG2, CMG2 give you a bigger storage partition to /data, so your left inner storage space is about 2GB bigger than BMG2.

Download link:

CMG2(recommand and with all 5 files):

http://pan.baidu.com/share/link?shareid=3191785497&uk=1765165646

BMG2(just 1 pda file, and if you want to flash BMG from CMG, you have to flash AME3 5files first and then flash this pda file or upgrade via ota or samsung kies):

http://www.hotfile.com/dl/233057707/d615d5f/I9502ZNUBMG2_I9502CHUBMG2_CHU.zip.html

2. custom rom

Custom rom must match the version CMG2 or BMG2 above, CMG2 custom rom can be only flash on offical CMG2 rom and BMG2 rom on BMG2 offical rom.

Here is some famous custom rom from China and all of them have GAPPs inside and bloat software from China Unicom&&samsung removed.

for CMG2 user:

custom rom V7 by wanjiquan 凌凌漆, original link :http://www.wanjiquan.com/thread-648469-1-1.html

download:

http://pan.baidu.com/share/link?shareid=4236840626&uk=872783661

beauty package thread:http://www.wanjiquan.com/thread-737365-1-1.html

download:

http://pan.baidu.com/share/link?shareid=806207731&uk=872783661

for BMG2 user:

custom rom by gfan xwcoco, original link:http://bbs.gfan.com/forum.php?mod=viewthread&tid=6435822

download link:http://pan.baidu.com/share/link?shareid=3778876403&uk=3509615084

patch rar(move the app inside to /system/app and change the permission): http://pan.baidu.com/share/link?shareid=963978973&uk=3509615084

tips:XWCOCO's rom is light, fast and power saving and 凌凌漆's rom is stable fast and offical feature.

other tools:

Backup EFS tool

http://www.wanjiquan.com/thread-250429-1-1.html (all credit to wanjiquan and 凌凌漆)

download link:

http://pan.baidu.com/share/link?shareid=2765681177&uk=3657708989