[HD7 Q&A, Help & Troubleshooting] Momomuffins:
Hi :)

I've only started the learning process for modifying my WP7 as of today but in the past 7-8hrs (not kidding, I'm a semi-nerd LOL) I've learned a ton of stuff. I come from Android and Blackberry so this is new territory for me and my stock WP7 is absolutely boring me to death with those 10 dumb color options and very minimal ability to customize the phone. I just need a little clarification on a few things before I start tweaking stuff that I can't un-tweak later. I've tried searching everything I can with a screaming 11mo old with me all day before typing this up. So forgive me if I missed a thread out of the 50 billion on here :p

I currently have the AT&T HD7S, never modded, SIM locked, totally virgin phone. When I bought the phone I'm assuming it was running the NoDo version (correct my if I'm wrong) because I had to manually upgrade to Mango myself after unboxing. So here are my ?'s...

1.) Is it true that there's currently no way I can roll back to NoDo in order to be able to flash this ROM? I read the official Mango update modifies the bootloader so that HSPL can't be used BUT HSPL is needed to be able to load custom ROMs. I have the official Mango but I want custom ROMs/themes (catch22'ish) =/

2.) Initially I hooked this phone up to a PC laptop I no longer have. Is that where my backup exists? Will this potentially cause a problem in the future? My Zune software currently shows no updates available and no restore info below. I read somewhere if you don't have access to your own backup you can use someone else's as long as it's the same phone model and carrier. How does that really help when it comes to my own personal data or does that not matter? Not sure what sort of data is stored within a WP7 backup.

3.) As far as dev-unlocking the phone...as of earlier tonight the Chevron site wasn't allowing token purchases. Is there some way around this using some other tool AND/OR does the Chevron unlock even work on an HTC phone? I have a feeling the answer is no but I'm asking anyway. Also, if I can eventually dev-unlock does that override the need to SIM unlock?

4.)Is there any sense to interop-unlocking if I'm not a developer? All I'm wanting at the moment is the ability to change up my phone. Baby steps...

5.)Can you sense there's something I've missed? LOL

My main goal here is to load this ROM http://xdaforums.com/showthread.php?t=1271118&page=11and/or themes and eventually start learning more advanced parts of the process. There's just SO much to this OS and 500 threads leading to 500 other threads when I'm just trying to figure out what one simple term means so I'm just hoping someone can help me sort out what I might be overlooking. Pls excuse my n00bness :rolleyes: Everyone here is a friggin' genius in my eyes so all feedback is appreciated. I'll get there eventually. Thanks in advance!

**UPDATE** Just noticed on that ROM thread page it says it comes with dev-interop unlock...now I'm even more confused D:

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* My "Bootloader Screen" Info (if needed)*

PD29150 SS-BC (4K)

SPL- 4.5.2250.0 (129185) MNG

MicroP(LED) 0x07

TOUCH S1 (v1.8,#1624)

SD Sandisk 15193MB

Partition Info- v211v413

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Current OS Version: 7.10.7720.68