HELP!! h6315 wont unlock with official code

[jdc4357]

I have a h6315 tmobile locked phone purchased from ebay. It came with an unlock code. It wont unlock. I called tmobile, they sent me the official unlock code which matches the one given to me with the phone. Here are the steps I've been doing for 1 month to try to get it to work on cingular.

I've tried, using a live cingular 64k sim.
Unlock Error: your phone is not ready for unlocking
(h6315 wont work with 64k sims supposubly)

I've tried, using a live tmobile sim.
Picks up signal and works.
Unlock Error:unlock code not accepted
Had friend call tmobile, got unlock code. Same code as before.

I've tried flashing the rom with 1.00.38eng.
Put tmobile live sim in.
Unlock Error:unlock code not accepted

I bought a 32k cingular sim. Activated it. It works on other phones.
Unlock error:your phone is not ready for unlocking.

Does anyone have any ideas what else to do? I've read that some of the h6315 will never unlock. I guess I might have found the needle in the haystack.

Any help is greatly appreciated!!
Thanx!