SM-G550T1 Metro Pcs UNLOCK AND ROOT





This Samsung SM-G550T1 Galaxy On5 is lock on Metro Pcs network SIM was arrive
on my repair shop with a problem on Invalid Sim asking for network unlock, It means the phone is lock on
country that it came from.
Costumer want to use the carrier Sim here, he want to Unlock Sim Carrier or we known it say's "Openline"

About phone information using Octopus Samsung Tool
Platform: Samsung Android
Selected port: COM1
Selected model: SM-G550T1
Reading info, please wait...
Detected phone model: SM-G550T1
Firmware compiled date: Thu Mar 23 17:51:53 KST 2017
PDA version: G550T1UVU2AQC4
CSC version: G550T1TMK2AQC4
SW version: G550T1UVU2AQC4
Phone SN: RV8J30ANWQK
Android version: 6.0.1 (MMB29K)
Sales code: TMK
Country: USA
HW platform: exynos3
HW Chip: exynos3475
HW Modem: SHANNON308
Security patch level: 2017-03-01
Codename: on5ltemtr


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

How I Unlock this Samsung model SM-G550T1 (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 2.5.4
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.

⇨ How to ROOT
          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 metro Pc, 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 BETA-SuperSU-v2.74-2-20160519174328.zip
and twrp-3.0.2-0-on5ltetmo.img.tar

Place or copy the BETA-SuperSU-v2.74-2-20160519174328.zip
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  : Successful flash the twrp-3.0.2-0-on5ltetmo.img.tar



After flash is complete like in figure 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 BETA-SuperSU-v2.74-2-20160519174328.zip you copy earlier into internal or sd card

After successfully install the SuperSU zip, Reboot now as normal and see if this device rooted.
Well it is rooted and ready to unlock using Octopus samsung Tool but this SM-G550T1 Metro Pcs in my hand have high/new security thats why need to downgrade modem to unlock but try yours in your hand if you lucky it can unlock after root.

Sales code: TMK
Country: USA
HW platform: exynos3
HW Chip: exynos3475
HW Modem: SHANNON308
Security patch level: 2017-03-01

You see a new Security patch level a red line that is issue to failed unlock even if is rooted.
For me i downgrade the modem File compatibility on this gadget on my hand, if yours hand gadget is similar use it download below.


After download flash the Modem file CP_G550T1UVS2APL1_CL8180604_QB11766623_REV00_user_low_ship.tar.md5 using Odin tool Load to CP section of odin tool same step on above how to root.
Then Unlock it using octopus samsung Tool

Successful unlock SM-G550T1 Metro Pcs using Octopus Samsung tool requirements
- must be rooted
- If patch security is latest downgrade modem 
- Press unlock Tab



For backup virgin security you can contact me
Thanks for viewing ..... happy unlocking

A Smartphone Software repairing

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