[HTC 10 Questions & Answers] Emilicious:
UPDATE​

Long story short, couldn't solve my particular issue. Called T-Mobile and they sent me a new phone for free (I had only bought it a day before the brick happened). So that's one way to solve the problem :p:p I doubt they will send me another if I get stuck like that again (I don't think playing dumb and making them think they sent me a defected phone will work again lol). So I am going to take double the time for my root setup and comb through instructions twice!

Mmmk, so - I was told to post my issue to this thread. I will be honest, I didn't look through it to see if a similar problem has been outlined and addressed, but I decided that I'll post then look through and if there is one I will take my post down. Okie dokie so herin lies my problem:

HTC 10 for T-Mobile is stuck in either bootloader or download mode. I cannot boot the phone normally nor can I boot into recovery!

What did she do?

Welp...I'll tell ya:

rooted both my and my fiances phone (he likes to skim directions which often leads to hours of pure rage when it isn't working...I like to read directions and watch videos which means it takes me 20 to get a root working this = newb lover girl roots the phones)

he uses BETA SuperSU and I use the (RECOMMENDED) SuperSU 2.74-2 Force Encrypt Data

he starts flashing custom ROM's instantly and makes mention of needing partition permission set to permissive...

instead of digging further into exactly what it was he was talking about (which is really very odd for me...I usually research foreevvverrr before I touch anything) I get it into my head that I will just dowload the SELinuxModeChanger apk file onto my phone and install it thinking that was clever preparation, bc I totally just did it on my Desire 626S so OBVISOULY it'd work;):p and here's where I feel I f****d up....

the file says it fails the download and I start feeling weird about the foundation of my phone and everything related to the root

my response = "I must flash back to stock and redo everything, it shall bring my mind comfort"

...and here's probably where I actually f****d it up. I have used the RUU application before with my HTC Desire 626S, so I go to HTC's ROM library and they don't have HTC 10 under T-Mobile. However, they do have it under Unlocked/ Developer...and I thought that was perfectly fine (I am a newb rooter I know)

I download that RUU file and run it; yup totes forgot to relock the phone before running the RUU - however, it fails and gives me an error

I remember I forgot to relock the BL and I do that and from that point forward I have found myself stuck in either BL or DL mode ***YES I HAVE TRIED TO UNLOCK THE PHONE ONCE MORE, NO IT DOES NOT WORK. THE FASTBOOT FLASH GOES THROUGH AND MY PHONE RECOGNIZES IT...BUT ONCE I SELECT THAT I DO WANT TO UNLOCK THE BL IT JUST FREEZES AND BOOTS BACK INTO BL OR DL MODE:crying::crying:***

So here I am. I have learned that T-Mobile HTC 10 users don't even have a stock RUU ROM available to them, and I am pretty much a super sad panda. TBH between the two of us (my fiance and I) I thoughgt FOR SURE he'd be the one to brick his phone if a brick were to happen...and here I am...desperately hoping there is something I can do. I DO NOT have my phone in S-OFF mode. I am so sad. I literally JUST got his phone. Help me bring it back to life once more?

<<FUN NEW UPDATE: I haven't touched my phone all day for troubleshooting - the device is no longer recognized by Windows when I plug in and boot up>>

~Em