1. gbourland's Avatar
    So this may have already been covered but I haven't been able to find any such post. So I updated to 5.1 carrier file. MMS works great here in az. But what happens on 9/25 will I check update through itunes and it change it for me? Would I have to revert back to 5.0? Just curious if anyone has thought of this or would have more insight than myself. THanks


    Gabe.
    09-15-2009 11:14 AM
  2. texags08's Avatar
    it will not ask you to update if you have a higher version of the file...
    09-15-2009 01:25 PM
  3. whmurray's Avatar
    So this may have already been covered but I haven't been able to find any such post. So I updated to 5.1 carrier file. MMS works great here in az. But what happens on 9/25 will I check update through itunes and it change it for me? Would I have to revert back to 5.0? Just curious if anyone has thought of this or would have more insight than myself. THanks


    Gabe.
    It seems clear that instead of using a generalized control that turned off MMS for all iPhones, the 'steaming pile of failure' turned it off one account at a time. Right, Duvi?

    Now it has to go back and turn them on one account at a time. In order to have everyone turned on by 9/25, they have to turn some on early. Will not surprise me if they do get everyone on time.

    I will be very surprised if this one application is going to make the difference in its load that AT&T so fears. The ironic part of this is that MMS is metered, not included in "unlimited" data. AT&T has foregone revenue which it will never get back but will make pots full of money on MMS. In fact, SMS is such a rip-off that I use it only for emergencies.

    Similarly, I do not think the other applications that it fears, e.g. tethering, Slingplayer, would make much of a difference either. There are simply too many applications for any one to move the load needle very much.

    Courage! Courage, AT&T. The sky is not falling.
    Last edited by whmurray; 09-15-2009 at 03:04 PM.
    09-15-2009 03:00 PM
  4. donblay's Avatar
    whmurray, I think what the OP meant was will the official update on the 25th over-write his non-official carrier file with the official one. I don't think he meant what will happen to AT&T's network.
    I was wondering the same thing Gabe, i was thinking about doing a backup->reset->restore on my phone the night before, that way I'll have the original carrier file I'm supposed to have before the official push on the 25th; just be be safe.
    09-16-2009 10:29 AM
  5. flyingember's Avatar
    i was thinking about doing a backup->reset->restore on my phone the night before, that way I'll have the original carrier file I'm supposed to have before the official push on the 25th; just be be safe.
    the carrier file is not backed up.

    Dev-Team Blog - 3 • fun!

    read the Baseband 101 section

    I have a feeling the current baseband file is what's required by ATT for MMS to work.
    09-16-2009 11:09 AM
  6. donblay's Avatar
    the carrier file is not backed up.

    Dev-Team Blog - 3 • fun!

    read the Baseband 101 section

    I have a feeling the current baseband file is what's required by ATT for MMS to work.
    right thats what i'm hoping for, the carrier file to not be backed up. that way after i reset the phone to 3.1 and then restore it i'll have the non-altered 5.0 carrier file agian
    09-16-2009 12:50 PM
  7. flyingember's Avatar
    right thats what i'm hoping for, the carrier file to not be backed up. that way after i reset the phone to 3.1 and then restore it i'll have the non-altered 5.0 carrier file agian
    the backup never backs up the baseband file
    09-16-2009 05:01 PM
  8. donblay's Avatar
    the backup never backs up the baseband file
    Are you agreeing with me, or correcting me??
    If i do a reset and then restore my iphone, i will end up with the original carrier file that comes with OS 3.1 and not the hacked one I recently installed, correct?
    09-17-2009 09:31 AM
  9. JustinHorn's Avatar
    As far as I know the carrier file just gets replaced by new versions. So if the new version is 5.1 you might not get it since you already have a 5.1.
    09-17-2009 09:41 AM
  10. donblay's Avatar
    As far as I know the carrier file just gets replaced by new versions. So if the new version is 5.1 you might not get it since you already have a 5.1.
    but if i do a restet & restore, i should get the 5.0 that comes with OS 3.1 i think, then i can get the official 5.1 on the 25th. thats what i'm thinking
    09-17-2009 10:16 AM
  11. JustinHorn's Avatar
    donblay, you could be correct as I haven't tried or know anyone that has. Just going my gut because, for example cannot downgrade from 3.1 to 3.0.

    Let us know how it works out.
    09-17-2009 11:05 AM
  12. baseballkyle's Avatar
    donblay, you could be correct as I haven't tried or know anyone that has. Just going my gut because, for example cannot downgrade from 3.1 to 3.0.

    Let us know how it works out.
    Yes you can. Its not for the faint of heart though.

    Revert Back From iPhone Firmware 3.1 To Firmware 3.0.1 | Jaxov

    3GS steps are a little more involved - Revert / Downgrade iPhone 3GS Firmware 3.1 To 3.0 | Jaxov
    09-17-2009 11:56 AM
  13. donblay's Avatar
    i'm not reverting from 3.1 to 3.0. i'm currently on 3.1 (which normally comes with carrier file 5.0) with a hacked 5.1 carrier file. if i do a reset to 3.1 again (save version i have) it should totally wipe out the iphone and put it back to the factory settings for 3.1; which should include 5.0 carrier file. then when i do a restore of my backup (backups do not back up the carrier file). i should have my iphone back to the way it was, but with the 5.0 carrier file its supposed to have.
    make sense?
    09-17-2009 01:47 PM
  14. JustinHorn's Avatar
    I was just using the 3.1 to 3.0 as an example of my thinking...

    not saying you are going from 3.1 to 3.0, was just using that as an example. The carrier file is it's own update. Just saying it could possibly work the same way.

    I also know that you can do some "crazy stuff" to downgrade iPhone firmware, but it's such a mess I just say you can't. Plus when you downgrade the modem software doesn't downgrade I believe and that can cause issues.

    You will know soon enough what happens when they release the new carrier file. Who knows, it might be 5.5 and this argument won't make any difference.
    09-17-2009 03:08 PM
  15. SaberSerene's Avatar
    Honestly I give up on getting MMS to work I'll just wait and stick too emailing until next Friday.
    09-17-2009 11:28 PM
  16. cdudek's Avatar
    I Was worried about the same thing. I restored my phone back to factory settings and then restored from backup....tada! Back to the 5.0 carrier file. The only problem was I had to put all my music back on which took some time. But yeah...it works. Now just waiting for the 25!!
    09-18-2009 09:22 AM
  17. donblay's Avatar
    I Was worried about the same thing. I restored my phone back to factory settings and then restored from backup....tada! Back to the 5.0 carrier file. The only problem was I had to put all my music back on which took some time. But yeah...it works. Now just waiting for the 25!!
    awesome, i thought it would work, but good to get some confirmation. i'll be doing that in a few days.
    Thanks for letting us know it works
    09-18-2009 02:13 PM
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