iPhone stuck on ios 6, cannot unlock, any tips?

[masterolive]

Ok, so I'm kinda tech savvy, and I tried my first jailbreak/unlock today.
Long story short, I'm spent. I have been working at It all day, learning all of these new technical words and processes.
I managed to run into and fix all sorts of problems, but I am at a dead end.

-using an AT&T-13.0 iphone4-GSM ios6 -Firmware 4.12.02
-Jailbroke using snowbreeze, -hacktivated it, and I reboot using ibooty (cause Im tethered -whatever that means.)
-Unlock by activating Ultra Snow fixer for 6x via ipare.com
-activated ulltrasnow via dev team.
-Downloaded TetherMe and made the proper changes in Data Network-MMS from tmobile.com
-Filed down my sim card to fit perfectly into sim slot WITHOUT TOUCHING THE GOLD(before anyone asks).

At this point I cannot connect to any data service,
and even though I changed the Data Network settings to t-mobile settings, that still does not changed my carrier, so I still get "no service" or "invalid sim"
any tips at this point???

I figured that I still have not fully unlocked my phone, so I read aobut this "SAM" method, but I have no "t-mobile unlock" ticket/file backup of my own.
based off the info I provided; will uploading a t-mobile ticket via redsnow fix my problem? if so, does anyone have a file or know where to get one?

 

[viperGTS]

Why not just completely restore and buy a $3 unlock on eBay?

 

[j.dstasio]

4.12.02 is not software unlockable. You need to unlock it via AT&T or using an IMEI unlock seller like unlock_fusion. Nothing you were attempting would unlock it.

 

[masterolive]

Why not just completely restore and buy a $3 unlock on eBay?

Well one thing lead to another, and I just became very involved in the process.
I was stuck for a wile, then I broke through, its been like this all day, and Im at a final stage of just unlocking it so I wanted to know if there where any tips from anyone.

but if there is absolutley no way to fix this, then I guess I will have to do an unlock.

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4.12.02 is not software unlockable. You need to unlock it via AT&T or using an IMEI unlock seller like unlock_fusion. Nothing you were attempting would unlock it.

where can I purchase a unlock service? (what is the best and cheapest?)
Also, I dont like to jailbreak, so can one of these services unlock my phone permanently without jailbreak?
and if so, can I restore It and start using it normally through wifi until I send it in?

 

[labman]

IEMI Unlock is the same as a factory unlock so know jailbreak is needed. all the info is here https://forums.macrumors.com/threads/1398957/

 

[Applejuiced]

If its an AT&T locked iphone 4 on that baseband version only way to unlock is with purchasing an IMEI unlock on ebay.
Its easy and very cheap like mentioned above.
You dont need any jb or any other hacks.
It will be unlocked forever and will work with any carriers gsm sim.