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  1. MekkelRichards's Avatar
    Currently there is no way back to ATT stock or ATT stock amber after you flashed with another ROM and it has been this way since the beginning.
    Of course there is, but none of us have figured it out yet.
    xandros9 likes this.
    10-11-2013 01:52 AM
  2. revfast's Avatar
    Oh, ok. Thanks. So there's basically no reason to go official unless for warrantee issues (or if you want slower updates haha).
    not even for warranty, they swapped out a phone that was running the att dev rom like a month ago !!
    10-11-2013 12:24 PM
  3. sharpycl's Avatar
    Its definetly possible to go from French amber to Att dev ROM. I did it myself some weeks ago. Don't exactly remember the process though...
    I don't suppose you can provide some info on what you remember? Might help me figure this out. If I figure out anything I'll be more than happy to post here my findings.
    10-11-2013 12:38 PM
  4. ivankan's Avatar
    I'm trying to go from French amber to ATT rom. I tried everything using NCS, NSU for Retail. My concern from reading the RM-821 ROM is missing some of the bands used in the US (1700 MHz) please correct me if I'm wrong. Since I'm using my L920 on T-Mobile, that band may be helpful! I'll report back if I find anything.
    10-11-2013 12:44 PM
  5. revfast's Avatar
    I'm trying to go from French amber to ATT rom. I tried everything using NCS, NSU for Retail. My concern from reading the RM-821 ROM is missing some of the bands used in the US (1700 MHz) please correct me if I'm wrong. Since I'm using my L920 on T-Mobile, that band may be helpful! I'll report back if I find anything.
    I don't think the rom replaces the radio but I could be wrong!!!
    10-11-2013 02:54 PM
  6. sharpycl's Avatar
    I don't suppose you can provide some info on what you remember? Might help me figure this out. If I figure out anything I'll be more than happy to post here my findings.
    I was able to successfully get back to the lates Rogers build but could not update to AT&T from there. Also before that I tried installing the pre portico build of Rogers bur that did not work either. Hope this informations helps someone.
    juan6996 and Derausgewanderte like this.
    10-11-2013 03:21 PM
  7. monte0's Avatar
    How do you get the calendar to show in English? I installed the language pack and applied but that didn't fix it. Also, how do you get it off military time?
    10-11-2013 04:40 PM
  8. abedauhajre's Avatar
    I don't suppose you can provide some info on what you remember? Might help me figure this out. If I figure out anything I'll be more than happy to post here my findings.
    I did it using the wphelper Chinese program that is shown on on xda developer.

    Since it goes from French rm-821 to rm-820, maybe through them they cam do something to flash the att official. If someone in this forum knows Chinese and can contact them, it will be of great help.
    sharpycl likes this.
    10-11-2013 05:27 PM
  9. Derausgewanderte's Avatar
    As others have already discovered, going from Rogers Amber/GDR2 to ATT Amber/GDR2 does not work just like from any other rom (I just tried this on mine). Honestly - this is perfectly fine with me (and I am actually pretty sure that as soon as I'd be finished with it I'd ask myself why in the world I went back). I am afraid it needs some deep digging into the rom settings to get this done (hopefully somebody at XDA can figure this out).

    I cannot speak for other roms, but I've tested two phones side by side yesterday in different locations for connectivity and speed and performance. Download/Upload speeds and connectivity is the same whether I use my wife's L920 on ATT Amber/GDR2 or my own L920 on Rogers/GDR2 using the ATT network.
    No issues on the Rogers rom whatsoever.

    Maybe it took ATT so long to make sure NOBODY can flash this over any other rom than an ATT stock rom.

    We probably need somebody from Nokia to help us out flashing back to ATT stock if it is ever needed.


    PS: here is the link to Snickler's instructions on XDA
    I did it using the wphelper Chinese program that is shown on on xda developer.

    Since it goes from French rm-821 to rm-820, maybe through them they cam do something to flash the att official. If someone in this forum knows Chinese and can contact them, it will be of great help.
    Last edited by Derausgewanderte; 10-11-2013 at 07:45 PM.
    sharpycl likes this.
    10-11-2013 05:39 PM
  10. monte0's Avatar
    I did a full reset and the calendar plus time fixed themselves. Now the only issue I've got is the glance screen is showing the time incorrectly while the rest of the phone is ok...any idea's?
    10-11-2013 06:08 PM
  11. Derausgewanderte's Avatar
    I did a full reset and the calendar plus time fixed themselves. Now the only issue I've got is the glance screen is showing the time incorrectly while the rest of the phone is ok...any idea's?
    shows time incorrectly as in totally screwed or off by a few hours exactly or 24h instead of 12h system? Check in settings/ date and time?
    10-11-2013 06:12 PM
  12. monte0's Avatar
    The glance screen is showing 24h instead of 12h. The phone time when unlocked is fine though, weird...
    10-11-2013 06:45 PM
  13. Darren Walsh's Avatar
    I think ya all need to do a hard reset in settings -about -reset phone, you will still have gdr2 but on a clean slate, it has sorted out problems for loads of people
    10-11-2013 06:58 PM
  14. Derausgewanderte's Avatar
    BTW: people are starting to post problems after upgrading to ATT Amber/GDR2.

    1) Local Scout is not working
    http://forums.windowscentral.com/nok...tm#post2168305
    xda-developers - View Single Post - Lumia 920 Amber Update via Rogers Dev ROM

    2) Xbox music has issues

    it took them so long and then they release a rom with problems? Sheesh
    Doesn't make me want to go back to ATT stock rom for sure. ...
    10-11-2013 07:51 PM
  15. juan6996's Avatar
    BTW: people are starting to post problems after upgrading to ATT Amber/GDR2.

    1) Local Scout is not working
    http://forums.windowscentral.com/nok...tm#post2168305
    xda-developers - View Single Post - Lumia 920 Amber Update via Rogers Dev ROM

    2) Xbox music has issues

    it took them so long and then they release a rom with problems? Sheesh
    Weird, my local scout was also not working today- on the ATT DEV ROM. Might be a server-side issue.
    10-11-2013 07:53 PM
  16. Derausgewanderte's Avatar
    Weird, my local scout was also not working today- on the ATT DEV ROM. Might be a server-side issue.
    but no issues on my Rogers Amber/GDR2. Not saying that it would have worked all day, but in the last hour I checked a few times and it was working fine.
    10-11-2013 07:58 PM
  17. juan6996's Avatar
    but no issues on my Rogers Amber/GDR2. Not saying that it would have worked all day, but in the last hour I checked a few times and it was working fine.
    yup, mine is working fine now as well. I don't think its ROM-related. I hope there's a way to flash an international ROM on the 1020, AT&T ROMs suck.
    Derausgewanderte likes this.
    10-11-2013 08:10 PM
  18. james05gt's Avatar
    Same here no issues with local scout, I'm also on Rogers amber/gdr2. I haven't really had any issues with the Rogers rom it's pretty stable and I get awesome battery life.
    Derausgewanderte likes this.
    10-11-2013 08:17 PM
  19. monte0's Avatar
    Yep, I did another reset and it started working correctly. Thanks! One last issue or maybe more of a question. On the stock ATT rom it would show 3g or 4g next to the single strength bars. Not on the french rom it shows H or H+ sometimes. Is that there 3 and 4g??
    10-11-2013 09:19 PM
  20. juan6996's Avatar
    Yep, I did another reset and it started working correctly. Thanks! One last issue or maybe more of a question. On the stock ATT rom it would show 3g or 4g next to the single strength bars. Not on the french rom it shows H or H+ sometimes. Is that there 3 and 4g??
    Basically, H = 3G and H+ = "4G" (not LTE, just HSPA+). You're getting the same speeds, just different icons.
    10-11-2013 09:25 PM
  21. pmc64's Avatar
    I just took my phone into my local service center and they handed me a replacement phone. Now i'm back on att rom.
    10-11-2013 09:38 PM
  22. Derausgewanderte's Avatar
    I just took my phone into my local service center and they handed me a replacement phone. Now i'm back on att rom.
    what did you tell them?
    10-11-2013 09:39 PM
  23. pmc64's Avatar
    I told them by battery was getting horrible battery life which was true. I charged it this morning and it was 100% then by like 12 it was at 40%.I charged it again and it was down to 48% at 4:00 and In the span of like 10 mins it dropped another 10%.
    10-11-2013 10:04 PM
  24. sharpycl's Avatar
    As others have already discovered, going from Rogers Amber/GDR2 to ATT Amber/GDR2 does not work just like from any other rom (I just tried this on mine). Honestly - this is perfectly fine with me (and I am actually pretty sure that as soon as I'd be finished with it I'd ask myself why in the world I went back). I am afraid it needs some deep digging into the rom settings to get this done (hopefully somebody at XDA can figure this out).
    I'm totally fine with sticking with the french rom myself. I knew what I was doing and am greatful for the OP for posting how to get to this ROM so easily while I waited for ATT. I think I am more concerned about upgrading to 8.1/GDR3 when it is released soon but I think I will just flash then when it is released.

    The french ROM has been working flawlessly since I installed it with the exception of tethering not working but that was because of me tinkering with the LTE settings (what the OP recommended not to do once you get it working).

    I love this community and hope I can give back to it in some way which is why I posted my findings about the latest Rogers build working earlier. If I think of something else I'll quickly post it here.

    Cheers all :)
    juan6996 likes this.
    10-11-2013 10:04 PM
  25. pmc64's Avatar
    I liked the Rogers one the best. Had the same symbols as the ATT one but no splash screen.
    10-11-2013 10:09 PM
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