[Galaxy Grand 2 Android Development] pururava:
URGENT ISSUE!!! PLEASE REPLY ASAP!

This post is quite long as i have tried to mention each and every little details i can think of..so please do not stop reading mid-way..

Hello,

I am facing some problem while trying to root samsung galaxy grand 2 sm g7102..

Though i m nt much expert or pro or developer...m nt noob either..

I have successfully rooted 15-20 different devices of my friends..

This current grand2 is my brother's..

I am trying to use CF-auto root method cos i dont want to download giant 1 GB pre-rooted firmware...

I downloaded CF-auto root zip file from chainfire's official website..

My problem is, after odin gives reset/pass, phone reboots, on top left corner in blue color, "recovery booting" is written..samsung splash screen is shown..phone stays on this screen for 5 seconds and then shuts off..

Same thing again n again..if i start phone normally, it ll show same "recovery booting" n ll shut off after sometime..

I tried to boot into recovery mode..same issue..

I tried to boot into odin download mode...that is successful..now it shows binary status-"custom"..meaning rooting should have been successful..

Bt phone doesnt go beyond recovery booting..

So..as a last resort, i reflash whole stock firmware..

Finally, phone booted perfectly..

I tried to root again..same issue..so reflashed stock firmware again..

Currently phone is working absolutely fine..no issue at all..bt the major setback..NO ROOT ACCESS..

I have taken all basic precautions like

1)checking n using latest drivers

2)using latest version of odin

3)using various data cables to eliminate faulty cable

4)wipe data n wipe cache from recovery

5)usb debugging on from developer settings

6)anti-virus,windows firewall n everything is disabled in computer..

7)battery is 80%

8)all options in odin is empty..only autoreboot n f.reset time is checked.

9)loaded file speciafically in AP/PDA sections..

10)odin gives PASS

11)stock firmware flashing has no issue at all..only CF-autoroot flashing causes issue..

I even saw youtube video showing how to root device..

I did everything same like that..bt end result is different..

I saw in that video..

In that video,after odin completes flashing,phone boots,goes on to same recovery booting screen..bt phone in video does not shut down..video shows phone goes into a mode where red colored 1-eyed pirate android is in background and there is writing for CFauto root..after process is complete,phone boot normally..

This whole thing is missing in my phone..

My phone does not go into this red android CFauto root process..it shuts down..

No matter what i do,the does not root..

My current andriod version info

Model num:SM-G7102

Android version: 4.3

Baseband:G7102DXUANC1

Build number:JLS36C.G7102XXUANE2

possible causes i found after 2 days of googling..i dont knw how to overcome them..

1)odin download mode says "write protection:enable"

"Secureboot:enable"

Is that preventing CF autoroot flash??

2)read something about setUID restriction..n some special kernel which removes this restriction..

3)KNOX security counter..

Please, if any can give any help how to root my brother's phone..it ll be very helpful..