[AT&T, Rogers HTC One X, Telstra One XL] BlastingFurnaces:
COULD IT BE?? An ATT HTC One X with FW under 1.85? Trying to have some fun...?

As a first time poster (and a very long time lurker) I would first like to say THANK YOU to everyone is involved with XDA Dev forums as I have learned a great deal of knowledge regarding nearly EVERYTHING I've ever donae with phones throughout the years all thanks to you fine men and women. Alright, here we go:

I currently have an AT&T HTC One X that I would like to get up & running on either Viper or CM10/11 most likely. After spending MANY hours reading through the posts, tutorials, and gathering information on my device... I'm too afraid of where to begin. ( Not my first rodeo with carrier unlocking, flashing, rooting, bootloader unlocking, customer recovery, ADB commands, bricking/unbricking, etc etc etc... but yes, I am popping my HTC cherry here :fingers-crossed: ) I'm just looking for the SMOOTHEST possible way to accomplish my goal.

This AT&T branded HTC One X was purchased used, and has been running on Straight Talk for about 7 months or so. Why haven't I looked into this sooner - it's my sisters phone.

Apologies for the wall of text introduction, here is device info:

From Android menus:

Phone Name

HTC One X

Model Number

HTC One X

IEMI

XXXXXXXXXXX ( obv censored real # ) which is Clean/Active, stays connected to ST / ATT 4g MVNO network with no problems, and I think (hope) it hasn't been swapped "Repaired" using one of those nifty boxes from China.

IMEI SV

01

Device serial number

HT24RW303567 ( I understand risks posting this and will just say this: please don't steal my little sister's SN for cloning/swapping - there's a million other ones out there you can choose from- left it in case this is useful to anyone reading about my dillemma - thank you

Voice MSISDN Line1

13XXXXXXXXX (yep....)

SOFTWARE INFORMATION

Android version

4.0.3

HTC Sense version

4.0

Software number

1.73.502.1 710RD

HTC SDK API level

4.11

HTC Extension Version

HTCExtension_403_1_GA_4

Kernel version

3.0.8-01111-g188cf26

root@ABM009 #1

SMP PREEMPT Sat Apr 7 01:37:15 CST 2012

Baseband version

0.16.32.09.01_3_10.79.32.08L

Build Number

1.73.502.1 CL54373 release-keys

browser version

WebKit/534.30

BOOTLOADER

******LOCKED*******

EVITA PVT SHIP S-ON RL

HBOOT-1.09.0000

RADIO-0.16.32.09.01_3

eMMC-boot

Apr 2 2012, 21:08:24

OpenDSP-v25.1.0.32.09.01_3

So, this appears to be an older than 2 year old phone (certainly not aesthetically speaking) that has never been updated / modded - basically untouched as far as that goes, right?

I've researched virtually all the info/exploits here on XDA I could find, and would eventually like to get to: an Unlocked Bootloader, CID/SPOOFING, SU/Root, CWM/TWRP, etc, etc, .. to try out some ROMs (already taken a likening to Viper from what I've read, and CM is just a given...) to see which one my younger sister likes the best :)

Back on track.. so from my understanding it appears as though ALOT has changed in all the tutorials on where to begin FIRST, whether it be S-OFF, CID for bootloader unlock, SU, CID, and it seems to boil down to the current firmare ver which determinins how to get from from FIRST step A to Z the proper way, with least chance of bricking risk.

From reading reading through all those those posts I think I remember seeing members some mention that for newer build based ROMs I'd have to to have a certain specific RUU (possibly a few) due to being linked to HBOOT and then go from there...? But I also could have sworn someone said that switching out Kernels/Radios is smoother when you're at a lower HBOOT and we can just pull needed stock RRU roms and flash as need. Seemingly as with all things root/flash/mod , this whole process has changed from what worked perfectly in Jun 2012 is like an insta-brick now...

Again, I apologize for the wall of text, but I guess what I'm trying to ask is if you had an ATT HTC One X on all factory software, what would be the smoothest and safest way ( or perhaps now the ONLY way) to get some of the newest ROMS available on there.

I did find an RRU link for my current setup, but if there IS some great value (dev / headache prevention wise) in keeping/pulling and saving some all sock parts of my build, please let me know. I did UTFSE many times, and could not fine someone with a device with such early software in recent times.

Thank you for taking the time out to read this novel,

-BlastingFurnaces :)