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ATT Version and CM for Froya


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13 replies to this topic

#1 jason.hamilton

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Posted 17 June 2010 - 03:33 PM

Hello,
I am fairly new to the nexus mods, so this might be an easy question.
I have the att build EPE54B version and i am running cmod 5.0.7.1-n1. When froya rolls OTA and cyanogen gets its hands on it and makes the mod, will there be two different versions? one for att and one for tmobile? or is it universal for any build?

#2 ushi

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Posted 17 June 2010 - 04:35 PM

Should be a universal build. Cyanogen for N1 should work for any N1...

#3 comzee

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Posted 17 June 2010 - 10:14 PM

The only reason I could see there being different builds if one version was CDMA and one was GSM. Since nexus ones only run on GSM networks they are all exactly the same.

#4 Szmyd

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Posted 18 June 2010 - 03:16 PM

View Postcomzee, on 17 June 2010 - 10:14 PM, said:

The only reason I could see there being different builds if one version was CDMA and one was GSM. Since nexus ones only run on GSM networks they are all exactly the same.
I'm not doubting the statement, but I'm curious as to why Google wanted me to identify that I was going to use my N1 on the AT&T network instead of the T-Mobile network during the ordering process...even though the prices for either were exactly the same.

#5 quadnad

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Posted 18 June 2010 - 04:20 PM

View PostSzmyd, on 18 June 2010 - 03:16 PM, said:

I'm not doubting the statement, but I'm curious as to why Google wanted me to identify that I was going to use my N1 on the AT&T network instead of the T-Mobile network during the ordering process...even though the prices for either were exactly the same.

That's because although both phones are GSM, T-Mo and ATT networks operate on different frequencies -- a T-Mo N1 would only operate on Edge speeds if used on the ATT network.

To the OP's question, although the build of CM itself should be the same, I wouldn't be surprised if there are two separate Froyo radios that would be available (one for each network). Not sure what is stored in the radio firmware, but if it has anything to do with the network they operate on, there would need to be two radios available.

#6 vincom2

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Posted 18 June 2010 - 04:41 PM

View Postquadnad, on 18 June 2010 - 04:20 PM, said:

That's because although both phones are GSM, T-Mo and ATT networks operate on different frequencies -- a T-Mo N1 would only operate on Edge speeds if used on the ATT network.

To the OP's question, although the build of CM itself should be the same, I wouldn't be surprised if there are two separate Froyo radios that would be available (one for each network). Not sure what is stored in the radio firmware, but if it has anything to do with the network they operate on, there would need to be two radios available.
Actually, I think currently both AT&T and T-Mobile N1s can use the same radios.

#7 ushi

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Posted 18 June 2010 - 04:55 PM

I believe there is only one radio. Only difference is hardware frequencies.

#8 jason.hamilton

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Posted 18 June 2010 - 04:56 PM

Well thats good news. Next question is, when CM froya is developed, we have to flash a new radio, correct?

#9 Scott.Baeder

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Posted 18 June 2010 - 05:28 PM

View Postjason.hamilton, on 18 June 2010 - 04:56 PM, said:

Well thats good news. Next question is, when CM froya is developed, we have to flash a new radio, correct?
yes, and even some of the non-froyo, but newer kernels have switched to needing the new radio

#10 quadnad

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Posted 18 June 2010 - 10:27 PM

View Postvincom2, on 18 June 2010 - 04:41 PM, said:

Actually, I think currently both AT&T and T-Mobile N1s can use the same radios.

Well that's great -- I suppose it means there's nothing to do with the frequencies they operate on in the radio itself, or perhaps it just works with both.

#11 llvwboy

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Posted 19 June 2010 - 08:09 PM

Not to sound completely not smart but wouldnt it be possible to take a quad band gsm phone (currently with att or t-mobile radio) and flash the other radio (t-mobile or att) to it? Would that work?

#12 chris-do-algarv

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Posted 23 June 2010 - 04:42 PM

This may be more detail than anyone wants but never the less, here goes.
I also have a question, below.

As far as I know there are actually two radios:  one for T-Mobile and one for AT&T.
There a number of clues to this.
There are two distinct model numbers for the Google Neuxs One.
These can be found under the battery and are hard to read if you are over fifty
(as I am).  I do know the model numbers are different but I do not know if the FCC-IDs
and the ICs are different.  I own a Google Nexus One AT&T model so I can only provide
deep details on it.

The Nexus One T-Mobile is model PB99100. I do not know the FCC-ID or the IC but can
make a pretty good guess.

The Nexus One AT&T is model PB99110.
The FCC ID is NM8PB99110.
The IC is 4115B-PB99110.
I would suspect that the T-Mobile numbers are the same but with PB99100 as an
extension to the FCC and IC numbers.
Once upon a time two similar transmitters with distinct FCC registration numbers meant
that the physical radios were different!  Different radios means ...

The T-Mobile configuration is:
3G/UMTS bands (900/AWS/2100 MHz) and four GSM radio frequencies (850/900/1800/1900 MHz)
The AT&T configuration is:
3G/UMTS bands (850/1900/2100 MHz) and four GSM radio frequencies (850/900/1800/1900 MHz)
As it happens the 3G/UMTS 2100 band is used in Portugal, Spain, France, and as far as I know
Germany, Italy, and Sweden.
This means either model will work in Europe for the most part.  In Portugal my carrier is
TMN and they (along with the other two carriers) use 2100.

Here is the detail on my phone:
The model number is PB99110.
Firmware Android 2.1-update 1
Baseband 32.26.00.24U_4.04.00.03_2
Kernel 2.6.29-01117-g4bc62c2 android-build@apa26 #1
Build Number EPE54B

I think a lot of the concern we AT&T owners have is will this or that mod work with
our phones.  The various Froyos that have escaped into the wild seem to only work well
(if at all) on the T-Mobile versions.
Are any of the Cyanogen Mods hardware specific, i.e., do they play with the radios?
By the way, do any of the Cyanogen Mods do WiFi as 802.11n?  It is also my understanding
that both the T-Mobile and AT&T models can do WiFi on 802.11n.
Please advise.

Cheers
chris-do-algarve (as chris-do-algarv)

#13 ushi

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Posted 23 June 2010 - 05:20 PM

The Froyo copies work just fine for me. I use Paul's releases from Modaco.

#14 Big Sal

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Posted 23 June 2010 - 07:21 PM

Yeah t-mobile and at&t 3g bands are different, thus 2 different devices. This is also why an unlocked iPhone will only operate at edge speeds on t-mobile's network.