How to go about Flashing the Radio Rom

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Hi,

This is a stab in the dark, but my attempt to contribute to the good work been done by many others in rooting and flashing the tattoo, but I'm going to need some pointers.

I foolishly told the wife to buy a HTC Tattoo that was locked to Orange UK thinking, hey it'll be a piece of p!ss to unlock. That definitely isn't the case. Now I've rooted the device using the various things on the forum, the contributors are vast, so not enough space to mention them all here.

I plan tonight to flash using the AzusaRom, but as it's been pointed out on a number of occassions this doesn't unlock the phone from the CID check. I've also tried one of those turbosims without joy, so I thought I'd start taking a very tenative look around the tattoo to see if I'm able to understand what's going on a bit more.

I was hoping for a little guidance that's all. I'm assuming at some level there's a process spawned which at boot says check this SIM card? One approach I guess will be to understand what that process is and disable it? Although from what I gather the issue is to do with the version of the radio rom and the thing we really need to do is hack and flash the radio rom?

I'm probably putting myself out there for some ridicule, but this problem seems to be a recurring theme and perhaps a consolidated thread might be useful for everyone in the same boat.

So anyone wishing to join the party please do.

http://www.dealextreme.com/details.dx/sku.12167

Works perfectly in my Orange Tattoo and I running my O2 SIM no problems whatsoever. We would all love a hacked radio rom but me thinks it not that simple.

I would have thought that on a rooted phone if we flashed the HTC rom 1.67.405.6 then this would write the generic radio rom to the phone but I guess it doesn't, there must be some other protection somewhere.