Hi,
So in another forum, Willmaster (moderator) says he have a way for unlock iphone... i paste the post here

i can share a Dump of Bootloader and Baseband (Seczone not,because Lockdata,IMEI etc.) but it is Useless,because
there is no Public Programmer for new SgoldX,our Programmer is Directly from Infineon,a Prototype -Planned Release is Jan. 2009....

Our Hardware Unlock is Simple,just Reflash the Bootloader,Baseband and Seczone with Unlocked Ones
The Reflashed Bootloader has Hardcoded Token for Seczone and no Signing Area (0x0 - 0x300 Removed,The RSA),the Baseband is
Original but must Modded to Run on Unsigned Bootloader (0x2012 - Rewrite with 6 "0") ,the Seczone is Modified on the Same Way as IPSF does on the old iPhone,
Hardcoded Security Token (NCK) (RSA Removed, 0x200 , Replace it with "12 A1 11" To Accept every NCK)
then also an Modified lockdownd,to send an NCK on Every Startup (like SIgnal.app in 1.1.4)
But with this Unlock you can never Update because Modified Bootloader will Brick him if the Checksum of the Baseband is False (what would no Problem,just reflash) BUT it Bricks also the Main CPU,which ISNT
Flashable......

i have Bricked many 3G's by this Method (and i Think im Soldering very good,µBGA is normaly no Problem for me)

Its not Good Unlock,its a bad Unlock,even bader then the first iPhone 2G Unlock by Hardware, -But: it is an Unlock.

So me i have few question if someone know please post here:
Do you think this way work?
Xgold interface not release yet by infineon possible to do without?(or with JTAG or debug entry in x-gold chip)
have someone already try or have possibility to try?
any advice/info welcomed
regard

You should talk to ta_mobile more on this.