1. Bootloaders- are locked and as of now will be for the forseable future bearing we don't get some of the info we need one being the proper sbk. there are other methods we have been working on but i guess the easy way of putting it is we have gotten to all the final doors and have all the tools , how ever the locks on these final doors are at this point still un-pickable. My current suggestion for anyone wanting to help, unless you are a good crypto guy , in which case by all means message me, for the rest of you our best bet is a hot chic a tight dress and a even better B - to some one that has access of some of the stuff we need :P if you cant offer any of these things than just be patient so that next time i dont have to write this and once again we wont have to publish what we are doing for everyone to read and defend against, before we are ready too!! Remember they don't document online how the built the lock , so we should not publish how we want to dismantle it until it is done!!
2. Nvflash - Yes it exists on our devices, yes it can be accessed , yes you need a Dev. cable to do so. Yes using it theoretically we could re flash our devices with unsecured images , yes with it I could make our devices free , How ever this all being said there is a problem currently, and that is that its is signed with a sbk value, this value is unknown to us it is a AES key and is in this format 0x00000000 00000000 00000000 00000000. With out knowing the value of this key anything anyone wants to tell you about nvflash is complete and entire BS!! You can not even read from the device, any command that is sent via nvflash will return an error and than disable the connection to the device in order to prevent a brute force attack. Find us this key by sleeping with the enemy i will give you an unlocked device by tomorrow :P
3. Dev Cable- Yes they exist, yes you can make your own, You need to send 5v to pin 4 also known as the id pin, the battery must be removed from the device when using this cable, you will plug it into your phone hold the vol - button and goto nvflash mode than your computer can see it as well as nvflash. Is there any need for you to have this cable ? As of now probably not, as there is not much you can do with this cable unless you have a dead or damaged battery and need to reflash a sbf to fix your phone so that you can than charge your battery again. And yes TBH is offering to sell you one of these cables for $50, if that seems to be a fair price to you and do not wish to make your own and do have a use for a cable that as of now is not helping a retail atrix to much than by all means order one from there web page.
Anyhow despite our lack of posting here on XDA there are a few of us that still dedicate our time everyday to this ... We are not constantly updating people here because A) Anything less than a guide on how to unlock your device is a disappointment, B) We do not think that making our info publicly available would be beneficial to anyone, and increases the likely hood of a patch or block attempt. C) Its not a oh were almost there type of operation, there is no clear cut path. Anyhow i Hope this helps clear up info and stops foolish attempts and ridiculous comments lies and posts like i have seen the past week, keep faith and enjoy your device as is its a great devices just severely crippled thanks to AT&T thats right AT&T so if your board write to them, call them, sign the patition, file a complaint to FTC blog about it and from now on only buy devices listed like here, http://unrevoked.com/rootwiki/doku.p.../root_friendly
Have a Great DAY!!