HTC Touch Diamond US 3G - working ROM

[listaction]

Is there a working ROM (home brewed or otherwise) that will make the 3G in HTC Diamond work in the US with a carrier like ATT?

I would like to buy a phone and I am not sure if this is possible. I read somewhere that the FCC recently approved 3G version of the model - but would like to know for sure.

Thanks,
Karter:confused:

[Black93300ZX]

No, there is no ROM. The European Diamonds don't have the hardware necessary for getting anything but 900/2100mhz 3G. Try searching before you ask questions that have been answered 5 times over.

[jcrompton]

No, there is no ROM. The European Diamonds don't have the hardware necessary for getting anything but 900/2100mhz 3G. Try searching before you ask questions that have been answered 5 times over.


Ok now I'm really confused ! I thought the fact (or at least I thought it was) that the "European" Diamonds were ROM upgradable to access US 3G was the whole basis for those of us that are hoping for the Touch Pro to eventually be the same way ??????????????

[jcrompton]

No, there is no ROM. The European Diamonds don't have the hardware necessary for getting anything but 900/2100mhz 3G. Try searching before you ask questions that have been answered 5 times over.


Sorry hit the submit button twice

[Blazeitup123]

we ALL hope so, but it looks like is NOT happening! >:(

[frozenwaffles]

lol this is just funny now...

[jcrompton]

lol this is just funny now...

Sorry guys - I must have misunderstood some of the posts and I haven't been following the Diamond area closely enough

But I sure am glad I could provide you some entertainment ... but even more so, I sure hope that the when the dust settles the laugh will be on you ???

hopefully

[frozenwaffles]

yes yes the manufacturers want to give out all those free features..i forgot how the commercial world works...

[charly_mx]

No, there is no ROM. The European Diamonds don't have the hardware necessary for getting anything but 900/2100mhz 3G. Try searching before you ask questions that have been answered 5 times over.

that is not entirely true. The hardware is exactly the same.

[landshark]

Based on the fact that HTC submitted a different model number than DIAM 100, the DIAM110

http://gullfoss2.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=417017&fcc_id=%27NM8DM%27)

to the FCC, it seems pretty clear that the hardware between the European version and the US version are in fact different. In addition, no one has been ale to get 850mhz 3G working on any existing (i.e., DIAM100) phone. If you can show evidence otherwise, I'm sure people would be interested. Otherwise, I think you're spreading a false rumor created out of wishful thinking and HTC's past behavior of not enabling GPS on the Trinity.

[charly_mx]

Based on the fact that HTC submitted a different model number than DIAM 100, the DIAM110

http://gullfoss2.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=417017&fcc_id=%27NM8DM%27)

to the FCC, it seems pretty clear that the hardware between the European version and the US version are in fact different. In addition, no one has been ale to get 850mhz 3G working on any existing (i.e., DIAM100) phone. If you can show evidence otherwise, I'm sure people would be interested. Otherwise, I think you're spreading a false rumor created out of wishful thinking and HTC's past behavior of not enabling GPS on the Trinity.

Indeed there is no evidence to prove the DIAM100 can work on US 3G. But, i dont think its hardware related :( well i just keep my hope that something can make mine work. Dont want to sell it out!

[clovis]

lets speculate a little....

1) Mobile phone chipsets ARE multiband by definition. Even if it says that it is only 1900MHz, its chipset suports a range of frequencies (something like 1850 to 1990). Why? because it has to support lots of call in a single cell. The call are spread over hundreds of channels (frequencies) and across time-slots in a code division scheme.
And because it uses a code division scheme for multiple simultaneos calls, then all these frequencies are used at the same time.
So, operating frequency is programmable.
2) The Antenna has also to support multiple frequencies.
3) I think the only reason a chipset has to not support a frequency is the processor speedy. But 7201A specs says it suports 2.1GHz as well as 850GHz UMTS.

So, the reason a mobile phone has to be dual band and not quadband has to be only market related and not technical.

Is this correct?
or only bullshit?

If this is correct, then Diamod Hardware HAS to be UMTS Quadband.
And, to provide HTC a commercial advantage when negotiating with carriers (that is, HTC locks european models to not work in USA --- so that, to use 3G in USA one needs to by the device from the local carrier --- this leads to better contracts with the carrier).

If Diamond hardware is quadband where is the lock?
From all the reseaches we are almost sure it is not in the main storage memory (Radio or ROM).

It can be hardware locked....then the only way to unlock will be hacking the hardware wich is not viable for almost all of us (if it is not impossible).

But (trying thinking as HTC engineers), how about lock it (outside the memory --- because users are flashing hacked Radios and ROMs) but still in a programable way? (I think like sim-lock is done this way in many devices). Because doing this way I don´t have to create diferent production pipelines and different projects.
By programmable I mean a process that is done after the phone (or the main board) is manufactured.

If all of this is true (and I think it is not :rolleyes:) than the question is: is this final process reversible? (like simlock)?
If yes then how?

Uau.....I am impressed on the amount of shit I can write sometimes.