Hi,
I made a step by step tutorial
for the new ones in this forum
for our LG O3D
Post if I had forgotten something
so here we go:
ROOT:
THIS WORKS ONLY ON FROYO AND GINGERBREAD V21A
THERE IS ANOTHER WAY I WILL ADD SOON
At first, before you can do anything special
is to root your phone.
You will need.
Froyo/V21A:
SuperOneClick
Gingerbread:
Megatron
LG USB Drivers
Froyo:
Video (it isn't my video!!!):
http://www.youtube.com/watch?v=5biS7DYqtLQ
Text:
1. Install the driver (it isn't shown in the video!)
2. Enable USB-Debugging on your phone (Settings-->Applications-->Development-->Activate USB Debugging)
3. Unzip the SuperOneClick package and run the exe as Admin
(Maybe you have to disable your Virus Scanner)
4. Connect your phone to the computer (No USB-HUB!)
5. Wait till the computer has installed the drivers.
6. Press Root in the SOC-Tool
7. Your phone will reboot between the root progress.
8. You have Succesfully rooted your Phone,
and you can now use apps witch requires root!
Gingerbread
Text:
1. Install LG ADB drivers
2. Put the device in USB debugging mode
3. Connect via USB
4. Extract the zip file
5. and execute run "run.bat”.
Credits go to Dan Rosenberg
INSTALL CWM-RECOVERY
Before you can install a ROM you need CWM-Recovery.
Video (It is my video):
http://www.youtube.com/watch?v=BChCSyPEfd0&feature=youtu.be
Text:
1. Install the free app Rom Manager from the Play Store
2. Start the app.
3. Press Flash CWM
4. Select the LG Optimus 3D (No Other devices from LG!!!)
5. An window will be opened witch
asks you if you want to give Rom Manager
Superuser rights, give it.
6. Wait till the progress bar is full.
7. You have no CWM-Recovery
BACKUP
If you want to install a new ROM all apps
will be lost so you'll need to backup them
Video:
http://www.youtube.com/watch?v=Hbz8-HkH0Lg&feature=youtu.be
Text:
1. Download the free app Titanium Backup
from the PlayStore.
2. Open the app and give it SU-rights.
3 Follow the video because I can't say
it in english
INSTALL NEW ROM:
Here in the forum are many
ROMS you can try...
1. Download a rom from the Forum. (Dont rename or unpack it!!!)
2. Put it on your Phone.
3. Open Rom Manager
4. Select Reboot to recovery.
5. The Phone will rebbot and you'll see an menu.
You can move with the volume kays and
select with the search button and go back
with the back button.
6. IMPORTANT!!!!:
Go to Backup and Restore
Select Backup and wait till it is ready.
7. go to the main menu with the back button.
8. Select Wipe Data/Factory Reset
9. Select Wipe Cache
10. Go to the install zip menu
11. Press install zip
12. Select your zip.
13. Reboot your phone when it is ready
14. Your done !
----I have not much time now so there will be only videos----
----Post if text is needed a reply----
RESTORE APPS
http://www.youtube.com/watch?v=LHB5-9zoqNU&feature=youtu.be
If you want to restore faster you need the permium version
or the second way to restore apps
RESTORE APPS
This method is faster than the free version
of Titanium Backup but there could be problems
like force closing apps or annoying stuff like this
1. Boot into recovery with Rom Manager or
shut down the phone and press volume down +
3d + power (sometimes a little bit tricky)
2. Go to backup and restore and select advanced
restore.
3. Select the backup with the apps you want to restore.
4. Select restore data.
5. Reboot
INSTALL NEW KERNEL/OVERCLOCKING
1. Download a Kernel from the Forum (Titan Kernel is great!!!)
2. Boot into reckovery
3. !!!Make a Backup!!!
4. Select install zip
5. Select the zip
6. Reboot
After that you can take a look on this:
http://forum.xda-developers.com/showthread.php?t=1592110
/////////////////////////////////////////////////////////////////////////
More things will be added soon!!!
If there are any questions you can post it
here. I will not answer on PMs or E-Mails!!!
You can post requests too.
Changelog
Changelog 05.01.2012
added Gingerbread root.
problem restoring
Hi ive recently ran into problems with my O3d and i need to do a recovery on it. I had rom manager on it and i backed up everything before it went wrong but now all my apps and games and stuff has gone including rom manager!!! Ive also tried the volume down and power button but i cant seem to access the restore part of it only wipe data/factory reset. I know all my stuff is still on my memory card though which makes it the more frustrating lol. Is there anything that can help me with this or is it a case of I just have to start again??? Any help would be grateful. Cheers
taffy2502 said:
Hi ive recently ran into problems with my O3d and i need to do a recovery on it. I had rom manager on it and i backed up everything before it went wrong but now all my apps and games and stuff has gone including rom manager!!! Ive also tried the volume down and power button but i cant seem to access the restore part of it only wipe data/factory reset. I know all my stuff is still on my memory card though which makes it the more frustrating lol. Is there anything that can help me with this or is it a case of I just have to start again??? Any help would be grateful. Cheers
Click to expand...
Click to collapse
You could install a new rom using kdz method then root it then install clockwork recovery then enter clockwork recovery and restore
Hello...
Nice guide you have. Overlaps with manbearpig's somewhat, but you have the video tutorials
For flashing CWM, I recommend using this instead. Prevents the common problem where ROM Manager shows LG Optimus 2x rather than Optimus 3D and the user flashes it anyway, bricking/bootlooping the phone.
You have only included installation of custom roms, You may add installation of stock roms by kdz method. first do this http://forum.xda-developers.com/showthread.php?t=1473781&highlight=kdz then http://forum.xda-developers.com/showthread.php?t=1287236 and get kdz from here http://lg-phone-firmware.com/index.php?id_mod=2
thanks for the posts I will add this tomorror or in a few hours because I am now online with my phone and it is to much to write
Stunningkun said:
You could install a new rom using kdz method then root it then install clockwork recovery then enter clockwork recovery and restore
Click to expand...
Click to collapse
Nope tried that method and still the same??? I spoke to someone from lg and they said theres a method of doing it through my googlemail account but I'd have to send the handset off??? Any ideas?
so u r on a stock rom which is rooted and you dont seem to be able install cwm and by pressing volume down and power you are entering default android recovery...right
have you tried this http://forum.xda-developers.com/showthread.php?t=1482713 for installing clockworkrecovery?
Hello guy!Today i'll help you rooting your SKY VEGA R3 A850-a quadcore 1.5Ghz phone from Korea
Ok!Let's follow this tutorial,very easy!
farm9.staticflickr.com/8194/8096513506_25133a8bf2.jpg
Root:
- On your phone,be sure that you have enabled "USB debuging mode"(Seting>System>Developer options), and Unknown source(Seting>System>Security)
- Download and install LG USB DRIVER
- Download this file and unrar it,you'll have "RootOptimusG" folder
Link: http://www.fshare.vn/file/T6CD2X1ZKT/
- Run "RootOptimusG.bat", chose "y" then hit "Enter"
- Look up to your phone screen,select "Restore my data"
- Have a coffee ultil it completed, check SuperSU icon on the phone screen!
Credit: choimobile.vn team
Please click thanks if you found out it is usefull and visit our website at www.cafe.choimobile.vn or like us on facebook https://www.facebook.com/ChoiMobile.vn to encourge us
Thanks!
we are porting Clockwork mod recovery,follow this topic to update our latest develop
Sent from my SHV-E140L using xda app-developers app
Any ideas where to buy this phone online?
thanks man!!! i just need this!!!
nice!
more reason to get this phone, but i'm still getting more info on the freq if it can work in either China or Philippines.
thanks
A850 CWM
Here is a CWM for A850, creadit to bbs.wpcnn.com for this one.
Download the file from here: http://www.mediafire.com/download.php?lkqaspemne2l0o3
Copy this file to ADB directory
1. Make sure that fastboot.exe is placed in ABD folder
2. Power off your phone
3. Hold Vol - keep it held, hold power button and wait for the phone to boot in fastboot mode
4. Connect USB cable and run the following command: fastboot flash recovery recovery.img
5. All done
In order to boot in recovery- Power off phone then Hold Vol + keep it held, hold power button.
Need help.
how do you run it ?,went i run the file, no msg appear on the phone ?
edit
got the root to work :laugh: :victory:
Thank you
If I don have adb how? I duno how to do adb...
Sent from my IM-A850L using xda app-developers app
A850L 4.1.2 SMS fix, let try
choimobile.vn/threads/a850l-rom-jb-4-1-2-full-tieng-viet-fix-tin-nhan-sms-3g-sky-im-a850l-a850.1916
There is an update 4.1.2 in march13. Can it be rooted using the same method. Using a850s
I tried this method but it doesn't work on my A850K running 4.1.2. After I confirm on the phone data restore nothing happens. Because I didn't find LG Drivers I installed Vega USB Drivers. If anyone succedeed rooting 4.1.2 please tell me.
Whoever wants root for JB follow below:
(I will not be responsible for any bricked device, so try this on your own risk)
Download the usb driver from below:
For K version: http://file.isky.co.kr/upload/software/USB/IMA850K_USBDriver.zip
For L version: http://file.isky.co.kr/upload/software/USB/IMA850L_USBDriver.zip
For S version: http://file.isky.co.kr/upload/software/USB/IMA850S_USBDriver.zip
Download Recovery Below:
https://vkl.box.com/s/rlrm9ehql8d5h86jo60r
Download Root zip below:
850K : http://dl.dropbox.com/u/51675047/Sky Vega R3/Jelly Bean/A850K_Root_JB_2.12_10-4-2013.zip
850L: https://dl.dropboxusercontent.com/u/51675047/Sky Vega R3/Jelly Bean/A850L_Root_JB_2.11_23-4-2013.zip
850S: https://dl.dropboxusercontent.com/u/51675047/Sky Vega R3/Jelly Bean/A850S_Root_JB_2.15_23-4-2013.zip
HOW TO ROOT:
1. Install USB drivers and enable USB debugging on the phone. (Choose the one applicable for your phone K, L or S)
2. Copy the root Zip file to the sd card (USE THE CORRECT FILE FOR VERSION S, L, OR K)
3. Power off phone, hold the VOL+ , VOL- and Power button (all three together)
4. Scroll down to fastboot using volume keys and press power key to select fastboot. (wait for computer to install the driver)
5. Run the "Install recovery from fastboot" from the "IM-A850_Recovery_All in one_06-4-2013.rar"
6. Select the recovery you want to install (I chose 8) select 8 and press enter.
7. select "install zip from sd card" using volume keys and select it using power key then select "choose zip from sdcard"
8. select the file according to your version and select using power key and then confirm.
9. Reboot phone.
Your phone is rooted! Enjoy
papa.khan123 said:
Whoever wants root for JB follow below:
(I will not be responsible for any bricked device, so try this on your own risk)
Download the usb driver from below:
For K version: http://file.isky.co.kr/upload/software/USB/IMA850K_USBDriver.zip
For L version: http://file.isky.co.kr/upload/software/USB/IMA850L_USBDriver.zip
For S version: http://file.isky.co.kr/upload/software/USB/IMA850S_USBDriver.zip
Download Recovery Below:
https://vkl.box.com/s/rlrm9ehql8d5h86jo60r
Download Root zip below:
850K : http://dl.dropbox.com/u/51675047/Sky Vega R3/Jelly Bean/A850K_Root_JB_2.12_10-4-2013.zip
850L: https://dl.dropboxusercontent.com/u/51675047/Sky Vega R3/Jelly Bean/A850L_Root_JB_2.11_23-4-2013.zip
850S: https://dl.dropboxusercontent.com/u/51675047/Sky Vega R3/Jelly Bean/A850S_Root_JB_2.15_23-4-2013.zip
HOW TO ROOT:
1. Install USB drivers and enable USB debugging on the phone. (Choose the one applicable for your phone K, L or S)
2. Copy the root Zip file to the sd card (USE THE CORRECT FILE FOR VERSION S, L, OR K)
3. Power off phone, hold the VOL+ , VOL- and Power button (all three together)
4. Scroll down to fastboot using volume keys and press power key to select fastboot. (wait for computer to install the driver)
5. Run the "Install recovery from fastboot" from the "IM-A850_Recovery_All in one_06-4-2013.rar"
6. Select the recovery you want to install (I chose 8) select 8 and press enter.
7. select "install zip from sd card" using volume keys and select it using power key then select "choose zip from sdcard"
8. select the file according to your version and select using power key and then confirm.
9. Reboot phone.
Your phone is rooted! Enjoy
Click to expand...
Click to collapse
Man u're gr8! It worked like a charm! Thanks a lot!!! You made my day!!!
Whoever wants root for JB follow below:
(I will not be responsible for any bricked device, so try this on your own risk)
Download the usb driver from below:
For K version: http://file.isky.co.kr/upload/softwa..._USBDriver.zip
For L version: http://file.isky.co.kr/upload/softwa..._USBDriver.zip
For S version: http://file.isky.co.kr/upload/softwa..._USBDriver.zip
Download Recovery Below:
https://vkl.box.com/s/rlrm9ehql8d5h86jo60r
Download Root zip below:
850K : http://dl.dropbox.com/u/51675047/Sky..._10-4-2013.zip
850L: https://dl.dropboxusercontent.com/u/..._23-4-2013.zip
850S: https://dl.dropboxusercontent.com/u/..._23-4-2013.zip
HOW TO ROOT:
1. Install USB drivers and enable USB debugging on the phone. (Choose the one applicable for your phone K, L or S)
2. Copy the root Zip file to the sd card (USE THE CORRECT FILE FOR VERSION S, L, OR K)
3. Power off phone, hold the VOL+ , VOL- and Power button (all three together)
4. Scroll down to fastboot using volume keys and press power key to select fastboot. (wait for computer to install the driver)
5. Run the "Install recovery from fastboot" from the "IM-A850_Recovery_All in one_06-4-2013.rar"
6. Select the recovery you want to install (I chose 8) select 8 and press enter.
7. select "install zip from sd card" using volume keys and select it using power key then select "choose zip from sdcard"
8. select the file according to your version and select using power key and then confirm.
9. Reboot phone.
Your phone is rooted! Enjoy
Click to expand...
Click to collapse
sorry for the newb question, but this will not only root my phone but install a custom recovery that i can use on installing custom roms?
sethxavier said:
sorry for the newb question, but this will not only root my phone but install a custom recovery that i can use on installing custom roms?
Click to expand...
Click to collapse
Yes it will install custom recovery on your phone and you can install custom roms (if there are any good ROMS out there which are better then stock).
But I wouldnt suggest trying any other ROMS for 3 reasons;
1. The bootloader of a lot of the Sky-850 variants are locked so you might brick your phone by trying to install another rom (I did once took me a good 5 hours to bring it back to life)
2. They are all in Chinese and Vietnamese so you can accidentally flash a wrong ROM without Knowing the right one.
3. None of these ROMS out there are any better then the stock one, not even close so you better stick to the Stock ROM.
papa.khan123 said:
Yes it will install custom recovery on your phone and you can install custom roms (if there are any good ROMS out there which are better then stock).
But I wouldnt suggest trying any other ROMS for 3 reasons;
1. The bootloader of a lot of the Sky-850 variants are locked so you might brick your phone by trying to install another rom (I did once took me a good 5 hours to bring it back to life)
2. They are all in Chinese and Vietnamese so you can accidentally flash a wrong ROM without Knowing the right one.
3. None of these ROMS out there are any better then the stock one, not even close so you better stick to the Stock ROM.
Click to expand...
Click to collapse
I've got an A850S, and the only reason why im looking for a custom ROM is for the SMS fix, I'm using the phone outside korea you see. I'm actually looking for a modded stock rom for the SMS fix, or like a patch i can install for the sms fix, but haven't found any yet.
sethxavier said:
I've got an A850S, and the only reason why im looking for a custom ROM is for the SMS fix, I'm using the phone outside korea you see. I'm actually looking for a modded stock rom for the SMS fix, or like a patch i can install for the sms fix, but haven't found any yet.
Click to expand...
Click to collapse
I also have the S version, Just Install Go SMS or Pansi SMS from the market. You will be good to go.
You can also root the device using the method above and freeze the stock messaging app (which I would not recommend for you).
So the best way is Install a good messaging app from the market and hide your stock messaging app using the hide feature in the app drawer.
papa.khan123 said:
I also have the S version, Just Install Go SMS or Pansi SMS from the market. You will be good to go.
You can also root the device using the method above and freeze the stock messaging app (which I would not recommend for you).
So the best way is Install a good messaging app from the market and hide your stock messaging app using the hide feature in the app drawer.
Click to expand...
Click to collapse
I know what you mean by freezing the stock messaging app, thing is, if i use go sms or whatever sms app, im able to send messages with 160 characters fine, but anything more than that, it says unable to send message at this time, please wait until the service becomes available. I can set handcent to break the message into 2 separate ones, but id like it to be just one message if you know what i mean. (sorry kinda OC)
i try 2 machine but both cannot detect the driver when i plug in the phone a850s, both were 64 bits with windows 7 and window xp machine. i have install the driver given but it just cannot find the sky driver . i cannot reinstall the driver as it will prompt me i had already done so. please help
mrdaris said:
i try 2 machine but both cannot detect the driver when i plug in the phone a850s, both were 64 bits with windows 7 and window xp machine. i have install the driver given but it just cannot find the sky driver . i cannot reinstall the driver as it will prompt me i had already done so. please help
Click to expand...
Click to collapse
Finally get it rooted,
happen to have another os window 8 which i haven't used it for months, after boot up it take quite a long time to search for driver (not sure how long cause was away for an hour) , i never install the driver from this website link. after that i just run the software and it works, and follow all the steps given except i need to swop to my sdcard2 for the zip file as the sdcard is the internal memory of the phone
Is there any way to roll back to original recovery and unroot
Today I am sharing how to root MMX A110 using sp flash tools
First you need some things download below
1) CWM recovery
http://d-h.st/Ky2
Thnxx @suhas.holls
2) MMX A110 Drivers
http://www.mediafire.com/?5ai8nwihmp30grw
3) VCOM drivers
http://www.mediafire.com/?3wec990b42j3nn7
4) SP flash tools
http://www.mediafire.com/?b111ivr9it76cma
5) Supersu.zip
http://www.mediafire.com/?i1y443she8hlby6
6) MT6577 scatter file
http://www.mediafire.com/?2cp7i70khi8fe84
Now after downloading all things
1)Install The drivers in your PC or lappy whatever, window xp or 7 should be used.
2)Now first copy supersu.zip into root(out of every folder)of your phone's SD card
3) Now in developers option tick USB Debugging
4) Switch off the phone remove then replace battery and connect it to PC now your PC will install MTK preloaders.
5) Now remove data cable and don't turn on the phone, if its turned on itself then turn it off
6) Now open sp flash tools folder and open spflashtools.exe , search for the option "Scatter-Loading" and click on it and locate the scatter file you downloaded.
7) A list will appear then untick all except"Recovery"
8) Click on recovery and locate the cwm recovery you downloaded.
9) After selecting recovery insert data cable in PC and not in phone only connect one side i.e. to the PC.
10)Now click on download button and a countdown will start in the lower progress bar then connect your phone (in switched off state) Then a yellow bar and a green bar will appear and after that a green ring will appear saying "Download OK".
Your phone's recovery is now cwm.
11) Now remove phone and press Volume up volume down power key simultaneously and a mode will appear with two option recovery mode and factory mode.
12) Using volume up choose recovery mode and press power key.
13) then choose again recovery mode and press volume down key.
14) Now choose Install a zip from SD card and select"supersu.zip"And after installing it reboot your phone.
After rebooting you will find an app named Supersu
Hurray Your phone is rooted and now it has endless things to do.
Remember- Rooting void your phone's warranty
If you liked my work, please Hit thanks button it will motivate me and won't cost you.
Important
avinash130413 said:
Today I am sharing how to root MMX A110 using so flash
I am not responsible if anything happens to your phone, do at your own risk..
Click to expand...
Click to collapse
HI all,
I saw the need of reposting my post #282 (main ZOPO ZP999 thread) for people who want to root, flash recovery or for some reason lost control of their precious Zopo and want to regain it
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
I have noticed that the link sometimes is unavailable : Mod edit sales link removed
Therefore i post it here again : also THANKS TO JASPER===JG77 and Ghost45
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
This is what you have to do:
- Preferably use a Windows 7 (x32 or x64) system
- Download and install drivers http://www.4shared.com/rar/f0a9TeP8ba/Zopo_ZP999-3X_32-64bit.html
- Download the firmware and extract it (a stock ROM) http://www.zopomobileshop.com/content/9-download-zopo-mobile-latest-rom
- Download a recovery (I used CarlivTouch) http://www.4shared.com/file/xKa5nYyuce/recovery_CarlivTouch_30_ZP999.html
- Download SP Flashtool and extract http://www.4shared.com/zip/FlMUfELsba/SP_Flash_Tool_exe_Windows_v514.html
- Download SuperSu https://download.chainfire.eu/641/SuperSU/UPDATE-SuperSU-v2.40.zip
- Boot your phone and connect to your PC and copy the SuperSu zip to your SD (I used a micro SDcard and not phone storage)
- Disconnect and shutdown the phone
- Start SP Flashtool (as administrator)
- Click 'Scatter-Loading' and select the 'MT6595_Android_Scatter.txt' from the downloaded Firmware! Picture 1
- Remove all selections except (!) recovery
- Click on the location of the recovery
- Select the custom downloaded recovery file (in my case recovery_CarlivTouch_30_ZP999.img) Picture 2
- Remove the battery from your phone (DON'T CONNECT YET) (battery pull :not necessary i think...but does not harm )
- Make sure you see 'Download Only' in SP Flashtool and click the 'Download' button
- Now connect your phone to your computer and leave the battery out of it!
- Wait till you see a green sign Picture 3
- Disconnect your phone but the battery back in but (!) DON'T BOOT
- Connect the phone to a charger and wait till it shows the battery level
- Press the buttons Volume-Up and Power and hold them
- After the first Zopo screen release Power (I kept holding Volume-Up)
- If all is well you now see the custom recovery! (you can let go of the volume button ) (if it didn't work the first time because of wrong timing, just shut down again and retry)
- Immediately install the SuperSU ZIP file (install zip-> Choose zip from /storgage/sdcard1)
- When done choose reboot and if you get questions about fixing to keep the custom recovery and fix root, say YES
- Let it boot into Android and Check ROOT with f.e. rootchecker
- Go to Google Play Store and install Busybox (not necessary)
- Start Busybox and make sure you give it Root right (not necessary)
- Press Install, if it fails the first time do it a second time. You should see an OK message if all is well. (not necessary)
- Reboot your phone, and PRESTO, your phone is rooted.
If you would install MobileUncle Tools from Google Play Store you can see you are rooted. (Here you allways can go in recovery without any problems)
Thanksbutton appreciated
@raystef66,
New Zopo Official have taken new Forum of Zopomobileshop original first Zopo Forum.
So New threads are always here in Xda ...look for them.
can somebody with a recovery that I can mode to run on my phone help? I am tired of using 360root.apk I want to use SuperSU and not these apps with Chinese interface
Here are the steps I followed after some extensive reading of other peoples methods and trying every possible app that would not work:
How to install TWRP and root the Samsung Galaxy J1 Mini (SM-J105F)
The device is powered by a Spreadtrum chipsets and Android 5.1.1
Basically what you need to do to root your Samsung, is to install/flash a custom recovery such as TWRP, which other than the limited functions of the OEM recovery, has all the features you need to flash a custom rom. You then boot into this TWRP recovery and use the touch menu to install/flash the SuperSu xx.zip file to give you root. It seems that other methods to root do not work on this specific phone.
Here is an Odin3 flashable *.tar md5 TWRP file that will also make it possible to root your Samsung Galaxy J1 SM-J105F, unfortunately it has to be paid for. Find it here: http://www.saroms.co.za/product/samsung-galaxy-j1-mini-j105f-root-file/ - and follow the bellow steps to flash the TWRP custom recovery and after rooting your J105F Samsung Galaxy J1 Mini.
Note: Odin3 only flashes with xxxx.tar or xxxx.tar.md5 files. TWRP can also flash xxxx.zip files.
To get into Odin mode or Download mode on the phone, switch off phone and unplug any cable to your PC or charger. Now hold in the Home button, the lower part of the volume button (V-) and the power button simultaneously. The phone will boot into a recovery screen and if you push the top part of the volume button (V+) you will switch to the Download screen. Only now can you plug your phone into the PC and run Odin3
Once TWRP recovery has been loaded, do the following to boot into TWRP recovery: Disconnect any cables to charger or PC. Switch off the phone. Now hold in the Home button, the upper part of the volume button (V+) and the power button simultaneously. The phone will boot showing the Teamwin screen and then the menu buttons which work from the touchscreen.
If you do not want to pay for the correct TWRP recovery for your specific device, then use Google to search for the file: TWRP SM-J105H_F_M_Y 5.1.1.tar
1. Download the following files:
(i) OEM Samsung firmware for your phone in case you have to fall back and reinstall the firmware i.e.
XFV-J105FXXU0AQA3-20170329071250.zip
(ii) TWRP SM-J105H_F_M_Y 5.1.1.tar or any other custom TWRP recovery file for your model phone.
(iii) UPDATE-SuperSU-v2.79-20161211114519.zip
2. Go to Settings > About device > Software Info > and tap on Build number a few times until you are a developer.
3. You should now see and tap on 'Developer options' if you go back to Settings.
4. In Developer options. turn on 'OEM Unlock' by moving the slider to the right, Enable. Never set that setting to off once you have loaded a custom firmware or TWRP custom recovery! You phone will brick and only show *“Custom binary blocked by FRP lock” after the next reboot!! (FRP = Factory Reset Protection)
* If so install OEM firmware with Odin3 and start again.
5. Copy the UPDATE-SuperSU-v2.79-20161211114519.zip file to the root of your internal storage SD card (not external). This will be installed by using TWRP recovery. Use your PC to do this.
6. Turn the device off and boot into "Download Mode” (V- and Home and Power ... and then V+)
7. Run the Odin3 application on your PC and load the recovery *.md5 file under 'AP' or load the file: TWRP SM-J105H_F_M_Y 5.1.1.tar.
8. Connect the MS-J105f to your PC and let Odin3 connect and ID:COM will go blue and show i.e. 0 : (COM4) > then click Start.
9. The SM-J105F will power on when done. Disconnect cable and power it off again.
10. Boot into recovery (V+ and Home and Power) will now boot into TWRP.
11. You will now see the TWRP menu touch screen.
12. Tap Install > scroll to the "UPDATE-SuperSU-v2.79-20161211114519.zip" file you downloaded and copied to the phone memory tap it.
13. Swipe at the bottom slider to confirm install.
14. Tap Reboot to system when done and you should be rooted.
15. Install and run SuperSU from the app store and run.
16. Install and run Root Checker Basic.
To reinstall the OEM firmware, download the proper xxxx.zip from the Samsung website.
You must the extract the xxx.tar.MD5 file from the download
If you can get into the Download screen on your SM-J105F then use Odin3 as above, just under PA select the OEM file xxxx.tar.MD5 (it takes a short while to select properly as it a very large 2 gb file after extracting)
Hope this helps someone else. Thanks to all whose posts and contributions helped me.