Lumia 920 Amber Update via Rogers Dev ROM

da1stprince

Senior Member
Jan 14, 2007
98
18
0
new york
Here's a side by side speedtest comparison between stock and Australian rom:

The red N920 on the left has the stock AT&T rom with LTE icons and yellow N920 (aus.3049 rom) on the right has 4G icons, both average about same speeds but noticed after testing in several locations throughout the day that the Australian rom always came back with faster download speeds... I don't think it makes much of a difference but the point is that I have on or about the same average speed before and after flashing to this rom, regardless of 4G icon. got to speeds as high as 35mbps down in some areas (NYC)
 

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derausgewanderte

Senior Member
Aug 9, 2009
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Here's a side by side speedtest comparison between stock and Australian rom:

The red N920 on the left has the stock AT&T rom with LTE icons and yellow N920 (aus.3049 rom) on the right has 4G icons, both average about same speeds but noticed after testing in several locations throughout the day that the Australian rom always came back with faster download speeds... I don't think it makes much of a difference but the point is that I have on or about the same average speed before and after flashing to this rom, regardless of 4G icon. got to speeds as high as 35mbps down in some areas (NYC)
that is interesting. I tested speeds between my wife's ATT Amber/GDR2 and my Rogers Amber/GDR2 and although there were only minor differences, the Rogers rom always came out with higher numbers. Interesting ;)
 

riceboyler

Senior Member
Mar 26, 2008
136
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Cedar City, UT
So, I've read through the above posts, and I think snickler answered it, but I want to make sure. Is there ANY way to get back to AT&T after you've flashed a Rogers ROM? The only problem I'm having is Internet Sharing, and especially with GDR3, I'd really like to have it available again...
 

da1stprince

Senior Member
Jan 14, 2007
98
18
0
new york
So, I've read through the above posts, and I think snickler answered it, but I want to make sure. Is there ANY way to get back to AT&T after you've flashed a Rogers ROM? The only problem I'm having is Internet Sharing, and especially with GDR3, I'd really like to have it available again...

if you flash Rogers pre portico rom without the updates to amber you can flash back to Att, anything after the update you cant.
 
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derausgewanderte

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Aug 9, 2009
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if you flash Rogers pre portico rom without the updates to amber you can flash back to Att, anything after the update you cant.
good luck with that. A number of other people and I tried this without luck. There was no way to go back to ATT stock once you did a single OTA on the pre-portico.
http://forums.wpcentral.com/nokia-lumia-920/236790-41.htm#post2170760
follow a few pages before and after this post.

I know of only two other folks who reported that it is possible. One of them however stated that you can only go back if you DO NOT do ANY updates after flashing the pre-portico. Once you did you are stuck. Since the purpose of installing the pre-portico was to go to Amber (and Riceboyler wrote that he is on GDR3) that is not a solution. If you you did any OTA on the pre-portico there is no way back. I have contacted the other person who reported success but he never got back to me. The fact that there are plenty of other people who were not able to go back (including Snickler), to me is a good indication that only luck will help you here.

What you will likely find is that you cannot even flash back to pre-portico Rogers. Riceboyler, please report back if it works for you.
 
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da1stprince

Senior Member
Jan 14, 2007
98
18
0
new york
good luck with that. A number of other people and I tried this without luck. There was no way to go back to ATT stock once you did a single OTA on the pre-portico.
http://forums.wpcentral.com/nokia-lumia-920/236790-41.htm#post2170760
follow a few pages before and after this post.

I know of only two other folks who reported that it is possible. One of them however stated that you can only go back if you DO NOT do ANY updates after flashing the pre-portico. Once you did you are stuck. Since the purpose of installing the pre-portico was to go to Amber (and Riceboyler wrote that he is on GDR3) that is not a solution. If you you did any OTA on the pre-portico there is no way back. I have contacted the other person who reported success but he never got back to me. The fact that there are plenty of other people who were not able to go back (including Snickler), to me is a good indication that only luck will help you here.

What you will likely find is that you cannot even flash back to pre-portico Rogers. Riceboyler, please report back if it works for you.
exactly what i said... you can flash a pre portico rogers rom and downgrade from a stock att rom but if you do an update of any kind while in pre portico you will be stuck!!!
 
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TheIronMaiden

Senior Member
Jul 30, 2013
1,127
540
143
Chicago
Yep, just tried on mine, and I get a 0x80131500 error, which is basically saying that it doesn't match the ROM on it. Same problem I had trying to use NSU. Looks like I'm stuck with Rogers for now...





figures as soon as I flash this pretty much for the amber, AT&T knocked out those updates in record speeds. Now im looking forward to the 929. The 5" screen looks appealing








Sent from my Nokia Lumia 920 using Tapatalk
 

jhoff80

Senior Member
Apr 8, 2008
218
30
0
I know this is an old thread, but I flashed my 920 to the 8.1 AT&T/Rogers Developer Device ROM (w/ Cyan), I gave Internet Sharing a quick test and it worked fine... with no keyboard tricks or anything of the sort.

My 920 was originally a AT&T device, flashed it to Dev ROM to get Amber, and since then, Internet Sharing has never worked right, keyboard tricks or not. So I'm not sure if it was 8.1 or Cyan, but something appears to have fixed that.

My 1020 is now my daily driver anyway, but thought I'd point it out.
 

TheIronMaiden

Senior Member
Jul 30, 2013
1,127
540
143
Chicago
I know this is an old thread, but I flashed my 920 to the 8.1 AT&T/Rogers Developer Device ROM (w/ Cyan), I gave Internet Sharing a quick test and it worked fine... with no keyboard tricks or anything of the sort.

My 920 was originally a AT&T device, flashed it to Dev ROM to get Amber, and since then, Internet Sharing has never worked right, keyboard tricks or not. So I'm not sure if it was 8.1 or Cyan, but something appears to have fixed that.

My 1020 is now my daily driver anyway, but thought I'd point it out.
I confirm that. I have internet sharing after flashing the official 8.1 ROM. Rogers ROM that is
 
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