SM-G550T Galaxy On5 Unlock and Root

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This Samsung SM-G550T Galaxy On5 is lock on T-Mobile USA network SIM was arrive
on my repair shop with a problem on Invalid Sim, It means the phone is lock on
country that it came from.
Costumer want to use the carrier Sim here from Philippines he want to
Unlock Sim Carrier or we known it say's "Openline"

This model have "device unlock" apps and he tried already but permanent unlock failed.

How I Unlock this Samsung model SM-G550T (Galaxy On5)? Continue read below
and may i help as referrence what i do as short story steps ^_^

  • I Prepare my Paid Tool OCTOPUS BOX activated and update to version
Samsung Tab to Version 2.4.8
  • From phone, go to Settings -> About device. Tap 7 times on Build number to enable Developer options.
  • In Settings -> Developer options. (above About device)You need to enable OEM unlock, 
  • Logout all accounts and Make sure don't have Factory Reset Protection enabled in Google account.
  • Download at this Link ODIN TOOLS version 3.12 
and read the step by step what the tools about
  • Download Samsung usb driver at this Link
    If you have driver already ignore this part
  • Download  two files below to manually Root your Galaxy On5, Thanks to Team win for that files.
  • After download extract anywhere you want the "root files for g550t.rar"
and you see the two files name 
and twrp-3.0.2-0-on5ltetmo.img.tar

  • Place or copy the
to internal or sd card of your Galaxy On5
  • Open Odin tool and browse the twrp-3.0.2-0-on5ltetmo.img.tar file in the AP slot
  • Under Options tab disable Auto Reboot, then press Start button
Figure 1 : Successful flash the twrp-3.0.2-0-on5ltetmo.img.tar

After flash is complete like in figure1 above
you can pull the battery out then place the battery back in.
Now hold Volume Up + Home + [Power buttons of your Galaxy On5
until you reach recovery mode.

  • In recovery screen of device, you will see the screen asking you if you want to allow system modifications.
You will want to swipe to allow, otherwise the OS will replace TWRP once you boot!
If you want to be rooted with SuperSU apps you need select update using TWRP by browse select
the you copy earlier into internal or sd card
See figure below successful update using TWRP

Figure 2 : flashing SuperSU using TWRP

  • Then after successful flash the SuperSU Go to Reboot -> System
After all this was successful, your Galaxy On5 now is ROOTED
Proceed now to unlocking sim network using Octopus tool

  • Open the Octopus Samsung Tab to Version 2.4.8
  • Connect your Rooted Galaxy On5 with usb debugging enabled to PC port
  • Select model SM-G550T on Octopus Samsung model Tab
  • Press read info then Unlock button
  • Follow the tools prompt then wait to be unlock is finish
See the figure screenshot of Octopus tool unlocking success

Figure 3: phone not rooted unlocking is failed

Figure 4 : phone is after Rooted , unlocking is success

And the victory cheers" Phone is UNLOCK and ROOTED

For backup virgin security you can contact me
Thanks for viewing ..... happy unlocking
Note! Before Writing ROM to device
NOTE: Extract the downloaded compress file and provide given password if asked, Do it at your own risk, After flashed the device is set automatic in reset condition, All your user data is lost.
Make sure you full BACK-UP the device first before to proceed flashing your phone for future purposes.
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