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Thread: Down grade Galaxy S4 firmware

  1. #1
    Junior Member Timeclock's Avatar
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    Down grade Galaxy S4 firmware

    I have a galaxy S4 (SGH-I337ZKAATT, KitKat 4.4.2, Kernel 3.4.0-505595, build number KOT49H.I337UCUFNB1) and I am getting the “can’t find sim card so reboot” message. I have tried the fixes but no good. I read on the web that the S4 has two card readers, one for the SD and another for the SIM and when the phone is reading the SD it can’t see the sim so you get the message. I removed the SD card but no good. I also have a Galaxy Nexus (for years) and have never had this message ( It is running 4.2.2) So here is the question – Can I flash 4.2.2 onto my S4 and if so where can I get a good download? (The nexus does not have a memory card slot)

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  3. #2
    Senior Member Leeshor's Avatar
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    Welcome to the forum

    The same question was asked by another member just last week. There is no known way to downgrade. With that said I doubt the issue is with the Android OS. I have those 2 slots and my S4 doesn't care if I have the SD card installed or not. Your OS is actually a couple upgrades behind. Did you buy it used/rooted?
    Samsung Galaxy S 10.5 - SGH-i337 on AT&T - and LG G4

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    Junior Member Timeclock's Avatar
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    I got it new off EBAY. It worked perfectly for six mounts and started " no sim detected". ATT service said that with the imei phone number not on the receipt they would not fix it under warranty. Question? Do you know of any android OS phones that are not having this problem?

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    Senior Member Leeshor's Avatar
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    I'm not aware of any but yours that IS having that problem.

    Did you take the phone to an AT&T store or was it over the phone?
    Samsung Galaxy S 10.5 - SGH-i337 on AT&T - and LG G4

    Printing and file transfer tips
    WiFi connection tips. (modified 7/26/13)
    Current versions of Android don't support Flash player, try Puffin or Flashfox as an alternative browser.

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    Junior Member Timeclock's Avatar
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    It was over the phone. He sounded like he wasn't very tech savvy about smart phones, I will just scrap it and move on. I did a google search on "Unable to detect your SIM card. restart to check for your SIM card " and found a hoard of people with Samsung phones with this problem. Also take a look at You Tube for the same thing. There has to be at least 20 repairs suggestions from these sources but none work.

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    Senior Member Leeshor's Avatar
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    I'm aware of some that had that problem that proved to be fake S4 phones. None that were the real thing. I suspect you have one of those.

    See this site
    Don't be a victim: How to spot a fake Samsung Galaxy S4
    Samsung Galaxy S 10.5 - SGH-i337 on AT&T - and LG G4

    Printing and file transfer tips
    WiFi connection tips. (modified 7/26/13)
    Current versions of Android don't support Flash player, try Puffin or Flashfox as an alternative browser.

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    Junior Member Timeclock's Avatar
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    LEESHOR I do appreciate you helping me. Now, I tested my phone against the clone specs and my phone met all the requirements of being a Samsung S4 including the “ air swipe gestures” that are only on S4’s. The only thing left is the software. I could not find a fault there so I want to re-burn the 4.4.2., Doing a “phone factory reset” did not do the job. If I do that and the phone still has a problem, it would be a hardware issue. The phone is a ATT base unlocked phone and I would like to re-flash the basic KitKat 4.4.2. It has been a few years ago when I rooted my last phone and that method has changed. Can you direct me to where I can download the basic firmware and the best way to install it. ( I am not looking to rooting the phone but if thats what it takes I’ll try. The ATT software has canned programs I can’t get rid of. )

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    Senior Member Leeshor's Avatar
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    I'm not into rooting so I can't help, but as I remember there is a (ROM/Firmware) repository somewhere on the Internet that may have what you want. I can't remember where, but I've seen it before.
    Samsung Galaxy S 10.5 - SGH-i337 on AT&T - and LG G4

    Printing and file transfer tips
    WiFi connection tips. (modified 7/26/13)
    Current versions of Android don't support Flash player, try Puffin or Flashfox as an alternative browser.

  10. #9
    cr6
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    Sammobile has the stock firmware.
    Leeshor likes this.

  11. #10
    Senior Member Leeshor's Avatar
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    That was it!!!!!
    Samsung Galaxy S 10.5 - SGH-i337 on AT&T - and LG G4

    Printing and file transfer tips
    WiFi connection tips. (modified 7/26/13)
    Current versions of Android don't support Flash player, try Puffin or Flashfox as an alternative browser.

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