How To Guide F926U and F926U1 Firmware Links and Flashing Discussion Here

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iBowToAndroid

Senior Member
Nov 9, 2010
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Twin Cities MN
Hi there, my last line in service provider SW is
XAA/XAA,VZW/XAA

5G not working only LTE as i got the device from US to used in Saudi arabia, can i move to other firmware
It is SMF-926U1 OYM .
I read most of thread and made some searches and was looking for pit.file for z3 did not found it in Samsung site any help or guidance
Are you saying that the phone model is F926U and you want to flash it to F926U1 firmware?
 
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JaCkaL_Sense

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Aug 11, 2007
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Jeddah
The device may not support the 5G bands and frequencies used by your provider
5g band with my provider is N 78 and as i did some searches the device is equipped to support this band , was trying to flash another stock firmware to it , after many reading i found the need to have PIT file but unfortunately it is not on website for Samsung pit files , any ideas to change firmware
 

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Hashirama_Senju

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Nov 24, 2022
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I keep getting this error when trying to flash the U1 firmware on my Locked Verizon Z Fold 3. Am I doing something wrong?

I do not want to lose my data so I'm using HOME_CSC. Will it go through if I just select CSC?

Also, I have no Userdata file (I downloaded using Frija)

Please help will be greatly appreciated.
 

iBowToAndroid

Senior Member
Nov 9, 2010
5,497
1
1,751
Twin Cities MN
I keep getting this error when trying to flash the U1 firmware on my Locked Verizon Z Fold 3. Am I doing something wrong?

I do not want to lose my data so I'm using HOME_CSC. Will it go through if I just select CSC?

Also, I have no Userdata file (I downloaded using Frija)

Please help will be greatly appreciated.
If you want the Thom Browne firmware, you probably need to wipe. Probably can only avoid the wipe if it's regular U1 firmware.

But that's just my guess. Did an error message appear on the phone screen, when the flash failed?
 

kenbrownstone

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Feb 12, 2013
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OnePlus 7 Pro
View attachment 5768725


I keep getting this error when trying to flash the U1 firmware on my Locked Verizon Z Fold 3. Am I doing something wrong?

I do not want to lose my data so I'm using HOME_CSC. Will it go through if I just select CSC?

Also, I have no Userdata file (I downloaded using Frija)

Please help will be greatly appreciated.
Is the the 5.o ? I have a locked Verizon too
 
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DarthScabrous

Senior Member
Dec 22, 2012
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If you have network issues after updating the 12 OS and UI 4, is there a way to fix it without sending it to Samsung? I bought it second hand.
 

DarthScabrous

Senior Member
Dec 22, 2012
121
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The thing I'm worried about is others on here have said that they had to send it to Samsung to get the pba replaced. But I don't know if that is the only option.
 

nolidzh

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Dec 3, 2022
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I have an unlocked TMB version, can I infer from this that I can use other versions of the F926U or U1 software. For instance Xfinity has released 13/OUI5 but TMB has not. Can I use their firmware? Should I just be extra patient and wait for the U1 to release? TMB seems to be the last to update and I just switched from an Android 13 device to the Z Fold 3 and would like it sooner rather than later. Thanks!

(Long time lurker 15+yrs, first time poster)
 

iBowToAndroid

Senior Member
Nov 9, 2010
5,497
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1,751
Twin Cities MN
I have an unlocked TMB version, can I infer from this that I can use other versions of the F926U or U1 software. For instance Xfinity has released 13/OUI5 but TMB has not. Can I use their firmware? Should I just be extra patient and wait for the U1 to release? TMB seems to be the last to update and I just switched from an Android 13 device to the Z Fold 3 and would like it sooner rather than later. Thanks!

(Long time lurker 15+yrs, first time poster)
From the OP:

"Firmware is 100% interchangeable among these models: any U or U1 firmware version can be flashed to any U or U1 device at any time, assuming that you're not trying to downgrade the bootloader."
 

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    For those who aren't already aware, F926U is the model number of all of the US carrier versions of the Z Fold3. The F926U1 is the model number of the same device, but sold by Samsung SIM unlocked and with no carrier bloatware. Firmware is 100% interchangeable among these models: any U or U1 firmware version can be flashed to any U or U1 device at any time, assuming that you're not trying to downgrade the bootloader. A "U to U" or "U1 to U1" flash does not require a factory reset, but changing from one firmware to the other will require one. Also, U firmware is identical for the 4 base files (AP, BL, CP, CSC) for each individual build, no matter which carrier it comes from. So if you download 2 different carrier versions of the exact same build, the 4 base files will be identical. Where the firmware differs is in the USERDATA file - that's where the carrier bloatware and customizations reside.

    Manual Odin flashing is designed for those who:

    - want to manually update to a newer version of U firmware on their U device, either because they don't want to wait for their carrier's OTA or because OTAs aren't working on their device, or a different carrier got a new feature/patch before they did
    - want to flash U1 firmware to their U device
    - want to convert from U1 firmware to carrier U firmware
    - want to convert from one carrier's U firmware (with all apps and bloatware) to a different carrier's U firmware (with all apps and bloatware)

    For those who aren't already aware, anyone can now download firmware for almost any Samsung device any time that they want, via the various firmware download tools posted here on XDA like SamFirm or Frija. There are threads and info about them here on XDA so I won't waste time explaining - do a search if you're not already familiar with these tools. But they only provide whatever the latest/newest/current version is - nothing older. I have access to an internal Samsung firmware download tool that usually gets new versions before they hit the public firmware download tools, so that's where my files come from.

    This is not a "beginner's guide to Odin flashing" -type post/thread, so I won't list basic, step-by-step flashing instructions. My threads are geared towards those who already know what they're doing. If you're new to manually flashing Samsung firmware (or haven't done it in a long time), I recommend you consult one of those "beginner's" guides- there are tons of them here on XDA.

    Happy flashing!

    U firmware: https://www.androidfilehost.com/?w=files&flid=327754
    U1 firmware: https://www.androidfilehost.com/?w=files&flid=327755

    Notes:

    - DON'T QUOTE THE OP WHEN YOU REPLY, kthx

    - I have lots of threads just like this one for other Samsung flagships, if it interests you. For those who have already made use of my previous threads for a different device and are upgrading, welcome back :)

    - My zips are compressed extra small for space and bandwidth savings. The default Windows extractor can't handle it, so you'll need a 3rd party tool like 7zip, WinRAR, etc

    - it's quite time consuming to download the files, zip them up, and upload them to AFH. And, I do threads like this for every single flagship model, so I won't be uploading every single version. The only full builds that I upload are ones where I get access to a new bootloader and/or Android version early, before they hit the firmware download tools.

    - My naming method for folders on AFH is: build - bootloader - Android version
    So "SAT - 1 - 9.0" means the full build number ends in SAT, it's bootloader version 1, and it's Android 9.0. When bootloader and Android versions increment, the first build to have those changes will have its folder notated appropriately.

    - HOME CSC file keeps data intact; using the other CSC will wipe data. Flashing USERDATA will also wipe data.

    - Since AT&T doesn't allow their firmware to be publicly available (for any of their devices), I'll try to always upload at least one USERDATA per bootloader increment for AT&T (and Cricket, if they get this model). I'll also upload any full builds if AT&T is the only carrier to get that specific build, because you won't be able to find the files anywhere else.

    - For identifying USERDATAS, and to know what region/CSC to use in the firmware download tools if you're downloading yourself:

    AIO = Cricket (not available via firmware download tools)
    ATT = AT&T (not available via firmware download tools)
    BST = Boost Mobile
    CCT = Xfinity Mobile (Comcast)
    CHA = Spectrum Mobile (Charter)
    DSH = Dish Network
    TMB = T-Mobile
    TMK = Metro PCS
    USC = US Cellular
    VZW = Verizon (available via firmware download tools, but Manual Entry is required - Auto will not work)
    XAA = U1 firmware
    2
    I've got the u1 firm I'm gonna odin to my Verizon u..Was wondering in odin do I do the user data thing too..Read on another not to do it so I wanted to check

    U1 Firmware XAA shouldn't have a USERDATA file on it, so you can just ignore that slot on ODIN.
    2
    I guess what I'm asking is isn't there a way to just simply flash one of the US firmware's like XAA = U1 firmware or the CCT = Xfinity to enable the proper US frequency bands on a Physical dual sim international phone ?
    Nope. If you want US firmware, get a US phone
    1
    Is there a T-Mobile version available yet?
    Yep, firmware has been on Samsung's servers since last week
    1
    View attachment 5768725


    I keep getting this error when trying to flash the U1 firmware on my Locked Verizon Z Fold 3. Am I doing something wrong?

    I do not want to lose my data so I'm using HOME_CSC. Will it go through if I just select CSC?

    Also, I have no Userdata file (I downloaded using Frija)

    Please help will be greatly appreciated.
    Is the the 5.o ? I have a locked Verizon too