1. mustang7757's Avatar
    Ruben and I be adding firmware for carriers to flash as we go along
    EMGSM likes this.
    03-24-2020 10:46 AM
  2. mustang7757's Avatar
    Att s20 ultra 5g firmware courtesy of Reuben

    https://androidfilehost.com/?w=files&flid=305576
    EMGSM likes this.
    03-24-2020 10:51 AM
  3. nuangel2's Avatar
    I have unlocked S20 ultra on t mobile. I took out my sim. I used ATT files posted.
    Used prince Odin v3 it ran said passed.
    But when I looked at phone it did not update. What happened?S20 Firmware For Odin Flash-20200324_151303.jpegS20 Firmware For Odin Flash-screenshot_20200324-151413_settings.jpeg
    mustang7757 likes this.
    03-24-2020 02:17 PM
  4. nuangel2's Avatar
    I tried again same files but with Odin3 v3.13.1B and it worked. Success.
    S20 Firmware For Odin Flash-screenshot_20200324-161423_settings.jpeg
    mustang7757 likes this.
    03-24-2020 03:15 PM
  5. mustang7757's Avatar
    I tried again same files but with Odin3 v3.13.1B and it worked. Success.
    Click image for larger version. 

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    Nice
    nuangel2 likes this.
    03-24-2020 03:21 PM
  6. pjniez's Avatar
    Att s20 ultra 5g firmware courtesy of Reuben

    https://androidfilehost.com/?w=files&flid=305576
    The version of firmware on this download site appears to be the same version that I have which was on my phone when I received it (G988USQU1ATAW). On AT&T's support site for the S20 phones, it says that G988USQU1ATBN was released on 3/4/2020. Also, after doing some more research, I found that the S20 Ultra firmware available on SamMobile is firmware version G988UOYN1ATCH which was released on 3/20/2020:

    https://www.sammobile.com/samsung/ga...ware/#SM-G988U

    But I am not sure if that will work on my AT&T locked phone. I see they list many carriers. But not AT&T. There is a version of G988UOYN1ATCH that just says USA in the Country / Carrier column though. Is the USA (no carrier identified) for version G988UOYN1ATCH a firmware that I can install on my AT&T locked S20 Ultra?
    @Ruben Ocasio, do you have access to firmware G988USQU1ATBN?

    Sorry for the beginner questions. This is my first time trying to use Odin and update the firmware of a Samsung phone.

    Thanks!
    03-25-2020 11:28 AM
  7. criminal_bg's Avatar
    never really went too deep into flashing firmwares on phones unless necessary, (i did it alot with blackberry though but never with samsung) is there a version of the international version, the ones without any carrier branding and bloatware??
    03-25-2020 11:31 AM
  8. Ruben Ocasio's Avatar
    The version of firmware on this download site appears to be the same version that I have which was on my phone when I received it (G988USQU1ATAW). On AT&T's support site for the S20 phones, it says that G988USQU1ATBN was released on 3/4/2020. Also, after doing some more research, I found that the S20 Ultra firmware available on SamMobile is firmware version G988UOYN1ATCH which was released on 3/20/2020:

    https://www.sammobile.com/samsung/ga...ware/#SM-G988U

    But I am not sure if that will work on my AT&T locked phone. I see they list many carriers. But not AT&T. There is a version of G988UOYN1ATCH that just says USA in the Country / Carrier column though. Is the USA (no carrier identified) for version G988UOYN1ATCH a firmware that I can install on my AT&T locked S20 Ultra?
    @Ruben Ocasio, do you have access to firmware G988USQU1ATBN?

    Sorry for the beginner questions. This is my first time trying to use Odin and update the firmware of a Samsung phone.

    Thanks!
    This version G988UOYN1ATCH will work for your Carrier AT&T
    mustang7757 likes this.
    03-25-2020 11:41 AM
  9. mustang7757's Avatar
    The version of firmware on this download site appears to be the same version that I have which was on my phone when I received it (G988USQU1ATAW). On AT&T's support site for the S20 phones, it says that G988USQU1ATBN was released on 3/4/2020. Also, after doing some more research, I found that the S20 Ultra firmware available on SamMobile is firmware version G988UOYN1ATCH which was released on 3/20/2020:

    https://www.sammobile.com/samsung/ga...ware/#SM-G988U

    But I am not sure if that will work on my AT&T locked phone. I see they list many carriers. But not AT&T. There is a version of G988UOYN1ATCH that just says USA in the Country / Carrier column though. Is the USA (no carrier identified) for version G988UOYN1ATCH a firmware that I can install on my AT&T locked S20 Ultra?
    @Ruben Ocasio, do you have access to firmware G988USQU1ATBN?

    Sorry for the beginner questions. This is my first time trying to use Odin and update the firmware of a Samsung phone.

    Thanks!
    You can download that ATCH as carrier firmware are universal , I'm not sure if Att has rolled their update out but when they do and it's different build numbers can always flash later to it , just remember to save data no factory reset use home CSC file in slot for Odin CSC
    Ruben Ocasio and nuangel2 like this.
    03-25-2020 11:44 AM
  10. mustang7757's Avatar
    never really went too deep into flashing firmwares on phones unless necessary, (i did it alot with blackberry though but never with samsung) is there a version of the international version, the ones without any carrier branding and bloatware??
    I'm sure the international should have that , but not familiar because international have many different country codes
    criminal_bg likes this.
    03-25-2020 11:45 AM
  11. nuangel2's Avatar
    I got ATT download files for ATCH from sammobile. Used on my unlocked ultra. Worked fine.
    You can download that ATCH as carrier firmware are universal , I'm not sure if Att has rolled their update out but when they do and it's different build numbers can always flash later to it , just remember to save data no factory reset use home CSC file in slot for Odin CSC
    mustang7757 likes this.
    03-25-2020 11:52 AM
  12. nuangel2's Avatar
    Also used home csc file.
    mustang7757 likes this.
    03-25-2020 11:53 AM
  13. mustang7757's Avatar
    I got ATT download files for ATCH from sammobile. Used on my unlocked ultra. Worked fine.
    Glad to hear that
    nuangel2 likes this.
    03-25-2020 11:55 AM
  14. nuangel2's Avatar
    thanks mustang for explaining to me on my note 10 plus.how to use odin and flash.This was my first time flashing my Ultra.Thanks for always be supportive to members here.you and reubon are awesome
    03-25-2020 01:14 PM
  15. mustang7757's Avatar
    thanks mustang for explaining to me on my note 10 plus.how to use odin and flash.This was my first time flashing my Ultra.Thanks for always be supportive to members here.you and reubon are awesome
    Anytime! , glad we could help and yes Ruben also great contributor .
    pjniez and Ruben Ocasio like this.
    03-25-2020 01:21 PM
  16. pjniez's Avatar
    Thanks mustang7757 and Ruben for your assistance! I hope to be trying to do this later today.
    03-25-2020 02:08 PM
  17. mustang7757's Avatar
    Thanks mustang7757 and Ruben for your assistance! I hope to be trying to do this later today.
    No problem
    If you get stuck , let us know.
    03-25-2020 02:13 PM
  18. pjniez's Avatar
    I have two further questions...
    1) The page that I downloaded Odin from (samsungodin.com), said that I needed to download ADB Fastboot. But in every set of directions I have seen on how to use Odin, it doesn't say what to do with ADB Fastboot and there doesn't seem to be an install for the ADB Fastboot either. Do I need to do anything with ADB Fastboot? If so, what?

    2) From what I can gather, it looks like the USERDATA file is for carrier bloat and features. Is this correct? I am not sure if the latest firmware version G988UOYN1ATCH (dated 3/20/2020) which I found on SamMobile has been released by AT&T yet since the latest version I found on AT&T's support page is G988USQU1ATBN (dated 3/4/2020). Should I still go ahead and install the USERDATA file for firmware version G988UOYN1ATCH? I do want to use AT&T features like wifi calling and VoLTE.

    Thanks in advance!
    03-25-2020 02:42 PM
  19. mustang7757's Avatar
    I have two further questions...
    1) The page that I downloaded Odin from (samsungodin.com), said that I needed to download ADB Fastboot. But in every set of directions I have seen on how to use Odin, it doesn't say what to do with ADB Fastboot and there doesn't seem to be an install for the ADB Fastboot either. Do I need to do anything with ADB Fastboot? If so, what?

    2) From what I can gather, it looks like the USERDATA file is for carrier bloat and features. Is this correct? I am not sure if the latest firmware version G988UOYN1ATCH (dated 3/20/2020) which I found on SamMobile has been released by AT&T yet since the latest version I found on AT&T's support page is G988USQU1ATBN (dated 3/4/2020). Should I still go ahead and install the USERDATA file for firmware version G988UOYN1ATCH?

    Thanks in advance!
    No need for adb commands

    And yes I dont believe Att rolled the update out , so that's the latest security patch other carrier put out , if att comes with different patch number you'll need to flash to that to continue getting automatic software updates when you manual check in settings.
    03-25-2020 02:57 PM
  20. mustang7757's Avatar
    Yes user date in CSC of Odin will keep from factory rest, which will happen if you use regular CSC in odin
    03-25-2020 02:58 PM
  21. pjniez's Avatar
    No need for adb commands

    And yes I dont believe Att rolled the update out , so that's the latest security patch other carrier put out , if att comes with different patch number you'll need to flash to that to continue getting automatic software updates when you manual check in settings.
    OK, great! Thanks!

    If I flash the G988UOYN1ATCH version which looks like hasn't been released by AT&T yet, will I still have use of carrier specific features like wifi calling and VoLTE (which I do want)? Or should I just install the latest version that AT&T has released (G988USQU1ATBN) in order to retain usage of AT&T specific features?
    mustang7757 likes this.
    03-25-2020 03:11 PM
  22. pjniez's Avatar
    Yes user date in CSC of Odin will keep from factory rest, which will happen if you use regular CSC in odin
    Yep, so, I know I need to use the HOME_CSC file instead of the CSC file in order to retain my data. However, under the CSC button and field, there is a button called USERDATA and a field for the file path of the USSERDATA_USC file.

    S20 Firmware For Odin Flash-2020-03-25_16h17_40.jpg

    From what I can understand from some internet research, is that this is the file that enables/contains carrier bloatware and carrier specific features. So, I was wondering if the latest version of the firmware that I found on SamMobile hasn't been released by AT&T yet, will I retain the carrier specific features if I install this latest version and specify the USERDATA_USC fiel? Or should I just install the latest version that has been released by AT&T in order to be able to use AT&T specific features like wifi calling and VoLTE?
    03-25-2020 03:24 PM
  23. mustang7757's Avatar
    Yep, so, I know I need to use the HOME_CSC file instead of the CSC file in order to retain my data. However, under the CSC button and field, there is a button called USERDATA and a field for the file path of the USSERDATA_USC file.

    Click image for larger version. 

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    From what I can understand from some internet research, is that this is the file that enables/contains carrier bloatware and carrier specific features. So, I was wondering if the latest version of the firmware that I found on SamMobile hasn't been released by AT&T yet, will I retain the carrier specific features if I install this latest version and specify the USERDATA_USC fiel? Or should I just install the latest version that has been released by AT&T in order to be able to use AT&T specific features like wifi calling and VoLTE?
    Yes it will retain everything from Att

    And No dont use that slot in Odin for usedr data only first 4 with CSC use the firmware file CSC home there
    03-25-2020 03:30 PM
  24. pjniez's Avatar
    I did the firmware upgrade to G988USQU1ATBN and it all went very smoothly and quickly and no data loss! Once I got everything downloaded and installed it took about 5 minutes to do the actual upgrade.

    A BIG THANK YOU to Mustang and Ruben for all of your help!
    03-25-2020 06:35 PM
  25. mustang7757's Avatar
    I did the firmware upgrade to G988USQU1ATBN and it all went very smoothly and quickly and no data loss! Once I got everything downloaded and installed it took about 5 minutes to do the actual upgrade.

    A BIG THANK YOU to Mustang and Ruben for all of your help!
    Nice ! Very welcome
    pjniez likes this.
    03-25-2020 06:46 PM

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