Will flashing an AT&T tilt with the HTC ROM unlock it from the network

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I am curious if flashing my AT&T tilt with the HTC software will allow me to use a sim card from another carrier. Has anyone tried this?

Originally Posted by doctorphil

I am curious if flashing my AT&T tilt with the HTC software will allow me to use a sim card from another carrier. Has anyone tried this?

Nope. Find something/someone/someway to SIM unlock phone. Not possible as of yet. ROM flashing will work only after you CID unlock your phone, which means you can flash different ROMs onto your phone than originally suppied.

Some post couple days ago talk about how to sim unlock already, just search for it and call the att number on there, it work for me.

Originally Posted by maximuz329

Some post couple days ago talk about how to sim unlock already, just search for it and call the att number on there, it work for me.

haha, yeah, for some reason i never think to call up At&t for anything... i'm sure you can lie to your provider so they will give you the unlock code (at least until enough people use the same story verbatim to where they realize that it must be posted some discussion board as to how to get sim unlocked....)

I am still somewhat confused as to the unlocking aspect.
I know I can obtain the SIM unlock code for the Tilt from AT&T. Are you saying that it is still impossible to CID unlock the phone, once this has been done?

Originally Posted by lorettaboy

I am still somewhat confused as to the unlocking aspect.
I know I can obtain the SIM unlock code for the Tilt from AT&T. Are you saying that it is still impossible to CID unlock the phone, once this has been done?

SIM unlocking and CID unlocking are two different things.

CID unlocking allows you to use OS ROMs from other variants of the same hardware. i.e. HTC TyTn II ROM on a Tilt. CID unlocking can be done easily with HardSPL.

SIM unlocking allows you to use SIMs other than your carrier's. Right now the only way to get a Tilt SIM-unlocked is to get an unlock code from AT&T, or to purchase an unlock code from someone else (who is probably just abusing an "insider" within AT&T to feed them unlock codes.). Flashing an alternative radio ROM can remove a SIM lock, but from a few posts I have read, it is going to be much more difficult/take much longer for our enterprising hackers to figure out how to flash an unsigned radio ROM and have it actually boot, apparently the radio bootloader now does an integrity/signing check against the ROM and will only boot signed carrier ROMs.

Well then I'm still going to call ATT tomorrow for the sim Unlock (heading to japan in a month) but, from what your saying does that mean i can go ahead and flash my phone using HardSPL to HTC stock? or do i need to have sim unlock first regardless what i do?

I understand it's encrypted. But what happens if you dump the radio rom from a tytnii and flash it onto a 8925?

Originally Posted by ziddey

I understand it's encrypted. But what happens if you dump the radio rom from a tytnii and flash it onto a 8925?

Don't think it'll work. I think that the ROM has to be signed until the bootloader gets cracked. Not sure. If it worked, we would've heard about it and it would be in all the FAQs.

I wonder how it works though. Definitely am not knowledgeable enough about this yet, but upgrades have come out in the past for older phones. It wouldn't change the lock state though. Why is that? If there's a way to corrupt it and then flash back the original? Are there any signed radio roms out?

What exactly happens when you flash an unsigned one? Brick or just no radio?