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Root [GUIDE] How to root T-Mobile 6.0 update

Ok, so ive installed the 15 second program to install fast boot and adb system wide. I have an adb application in C:/adb i have a fastboot file in the same folder. Yet when i try to "fastboot adb devices, i get nothing. Ive been trying to figure this out for 2 days. Ive installed android studio, sdk, minimal adb and fastboot, drivers, and the 15 second adb fastboot installer. What do i do? More importantly, how do i install fast boot if its supposed to be installed already. I am at my wits end here, but would really like to be able to enjoy MM with root. Anyones help would be highly appreciated. Thank you.
 
Jack Mickey said:
Ok, so ive installed the 15 second program to install fast boot and adb system wide. I have an adb application in C:/adb i have a fastboot file in the same folder. Yet when i try to "fastboot adb devices, i get nothing. Ive been trying to figure this out for 2 days. Ive installed android studio, sdk, minimal adb and fastboot, drivers, and the 15 second adb fastboot installer. What do i do? More importantly, how do i install fast boot if its supposed to be installed already. I am at my wits end here, but would really like to be able to enjoy MM with root. Anyones help would be highly appreciated. Thank you.
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I dont know if it matters but i uninstalled minimal adb and just installed the 15 second program it also didnt want to work. and i also just opened the cmd program in the c:/adb folder holding the shift key and right click and select open command window here
 
I tried that too and it didnt work. When i plug my phone in, i verify the usb debugging toast. I think that when my phone reboots to fastbootmode, something is going wrong. Ive tried every adb fast boot app i could find. All to no avail. Once in fastboot mode, if i type adb devices again, my phone doesnt come up in the terminal. I just have absolutely no clue as what to do. I am beyond frustrated, to the point where im just about done. No matter what i do, no matter how many times i try, i cannot get my device to be recognised by my pc once in fastboot, which means i cannot acheive root.
 
I have. My issue is as soon as my phone reboots to fastboot mode( on the lg splash screen) it loses connection to my pc. From here, all i can do is a battery pull. Here are the steps i took. Revoke usb authorizations, enable usb debugging. Plug in. My phone asks if it want me to connect my data to my pc. I hit yes. The toast for usb debugging pops up. I allow. I go to C:/adb. In this folder i shift right click. In command i type adb devices. My phone comes up. I type fast boot devices, nothing. I type adb reboot bootloader. My phone reboots to fastboot mode(LG splash screen). During reboot i hear my phone disconnect and reconnect to pc. My phone stays in fastboot, and NO command in terminal does anything to it. If i type adb devices again, nothing comes up.
 
@Blu8 , ive tried installing the drivers for my device 5-10 times. Each time my pc says lg drivers installed successfully. How exactly do i properly install the drivers if i havent done so already. This is the only thing i can think of that i may be doing wrong.
 
I do this to the Tee. Once i reboot bootloader, my device boots to fastboot mode. (lg splash screen). If i type fastboot devices, nothing.
 

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Here is what im gonna do. Factory reset my phone, install drivers, adb and fastboot to a different pc. And then follow the guide. If it doesnt work, well i wont know what else to do.
 
When you type "adb reboot bootloader" and the phone boots, make sure you type "fastboot devices" and not "adb devices." That said, when I tried this with adb in Windows, "adb devices" always said my phone was offline even after revoking debugging permissions and reaccepting the key. Tried it in Linux (Mint 17) and it worked perfectly.
 
On the phone you can allow unlocking the bootloader, which doesn't actually unlock it. I believe you need fastboot to unlock the bootloader.
 
Checking "Allow OEM Unlock" in Developer Options doesn't unlock the bootloader. I had that checked when I tried booting TWRP in fastboot and got an error message saying I had to OEM unlock in order to boot a custom recovery. Once I did, I could boot TWRP. It's like a Nexus--you have to fastboot OEM unlock to use a custom recovery.
 
Damn! I was hoping it would carry over to MM. Looks like I will need a computer to get this done. Kingroot doesn't seem to be fully successful and OEM unlock can only be done in fastboot, from the sounds of it. I can get it done, I just need to make sure my computer won't crap out like it did the last time I did this (upgrading to 10L).
 
I think the bootloader was already unlocked in the Stylo on LP and the MM update locked it (but gave us adb & fastboot capability).
 
Jack Mickey said:
Here is what im gonna do. Factory reset my phone, install drivers, adb and fastboot to a different pc. And then follow the guide. If it doesnt work, well i wont know what else to do.
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I truly do not understand why you are having so much trouble with fastboot unless it is a driver issue. When you install your drivers for your device make sure your device is connected to your computer ass this does make a difference
Also try installing the drivers while your device is connected in fastboot mode. Wish I had more advice than that.

Telyx said:
I think the bootloader was already unlocked in the Stylo on LP and the MM update locked it (but gave us adb & fastboot capability).
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I did not test this but I feel like we could do the fastboot oem unlock in 5.1.1 as well. I think the Enable OEM unlock in developer options only unlocks the system, boot, and recovery partitions and allows booting of none factory imgs that are installed to one of these partitions. I think the fastboot oem unlock unlocks all the partitions and allows use of all fastboot commands.
 
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