Question for those of you for whom I've done a GSM firmware upgrade

ian douglas ian.douglas at
Tue Mar 11 06:48:09 CET 2008

If it helps any, using the March 4th daily build, my Neo registers just 
fine on both my TMobile and AT&T SIM's and both receive SMS messages and 
can place phone calls.

Mind you, I can connect to TMobile from within my apartment to 
make/receive a phone call and receive SMS messages. Inserting my AT&T 
SIM, I connected enough to download SMS messages, but to make a phone 
call I had to go outside where I have better AT&T reception. Must be the 
layout of the building where I live.


Michael Shiloh wrote:
> Hello,
> As most of you know, there was a bug in earlier GSM firmware on Neo 1973 
> which prevented certain AT&T 3G SIM cards from working in the Neo 1973.
> As most of you know, the upgraded GSM firmware that fixed this problem 
> could only be installed by an employee of Openmoko.
> I peformed this upgrade for perhaps a couple dozen of you.
> After I upgraded the firmware on your phones I tested them with my 
> personal AT&T SIM card, and they always worked fine.
> Starting a few months ago my AT&T SIM card no longer works in upgraded 
> Neos.
> We're trying to get to the bottom of this. Meanwhile, a useful point of 
> information would be your experience:
> For those of you for whom I performed the GSM firmware upgrade, did the 
> Neo 1973 work properly with your AT&T SIM card after the upgrade? Most 
> of you wrote me when you received the phones to indicate that it did. 
> Does it continue to do so? If not, when did this start happening? What 
> are the symptoms?
> For the larger community, do any of you have insight into cellphone 
> tower technology? Has AT&T performed an update in the past few months?
> Is it possible that AT&T has modified its policy towards unlocked phones?
> These are all extreme notions - it is far more likely that something 
> trivial and local has occurred. Perhaps I've forgotten to do something 
> (although I've reviewed my steps in excrutiating detail with the folks 
> back home) during the upgrade process. But since I'm completely out of 
> ideas, I'm reaching to the less plausible.
> Any ideas welcome, including crackpot ideas. To paraphrase Sherlock 
> Holmes, when you have removed the possibility of all other causes, the 
> one remaining explanation, no matter how implausible, must be the one.
> Michael
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