How To Guide Convert your T-Mobile (LE2127) to EU via MSM, No unlock.bin needed!

Search This thread

craznazn

Senior Member
Nov 12, 2009
464
203
OnePlus 8T
OnePlus 9 Pro
Thanks did that already and no luck..
Here were the exact steps i took from when we tried to debug it earlier. It says 11.2.3.3 OTA because that was the latest version at the time. run.bat was the old flash_all

  1. Download conversion zip
  2. Download EU 11.2.3.3 OTA ( this one specifically https://otafsg1.h2os.com/patch/amaz...6_OTA_0060_all_2104020504_14b30fef4631402.zip )
  3. Download the LE2123 conversion magisk module, I updated it. Link will be provided when available. Delete the one you downloaded before
  4. Reboot device to bootloader
  5. run.bat. Hope this runs fine for you, it worked for me in 1 try
  6. Setup without connecting to wifi, don't do anything special just get past the setup as fast as you can
  7. Install EU OTA
  8. Reboot, let it boot fully
  9. Reboot to bootloader
  10. Flash Magisk'd boot.img
  11. Flash Tmo modem
  12. Reboot
  13. Install Magisk Manager
  14. Magisk Manager -> Settings -> Enable MagiskHide
  15. Magisk Manager -> Settings -> Systemless Hosts (Not sure if necessary)
  16. MagiskHide -> Google Play Services -> Toggle on everything
  17. Install my magisk module
  18. Reboot
  19. Check for L1

im doing the download straight the system update is that okay or do i need the oxygen one? There both the same right?

both are the same
 

sunxutian

Member
  • Jan 22, 2015
    23
    3
    Here were the exact steps i took from when we tried to debug it earlier. It says 11.2.3.3 OTA because that was the latest version at the time. run.bat was the old flash_all

    1. Download conversion zip
    2. Download EU 11.2.3.3 OTA ( this one specifically https://otafsg1.h2os.com/patch/amaz...6_OTA_0060_all_2104020504_14b30fef4631402.zip )
    3. Download the LE2123 conversion magisk module, I updated it. Link will be provided when available. Delete the one you downloaded before
    4. Reboot device to bootloader
    5. run.bat. Hope this runs fine for you, it worked for me in 1 try
    6. Setup without connecting to wifi, don't do anything special just get past the setup as fast as you can
    7. Install EU OTA
    8. Reboot, let it boot fully
    9. Reboot to bootloader
    10. Flash Magisk'd boot.img
    11. Flash Tmo modem
    12. Reboot
    13. Install Magisk Manager
    14. Magisk Manager -> Settings -> Enable MagiskHide
    15. Magisk Manager -> Settings -> Systemless Hosts (Not sure if necessary)
    16. MagiskHide -> Google Play Services -> Toggle on everything
    17. Install my magisk module
    18. Reboot
    19. Check for L1



    both are the same
    Cool will give it a try, so I don't need to relock my bl first?
     

    craznazn

    Senior Member
    Nov 12, 2009
    464
    203
    OnePlus 8T
    OnePlus 9 Pro
    Cool will give it a try, so I don't need to relock my bl first?
    Only need to lock BL if you want to test for L1 while locked.

    In my experience with the other user not getting L1, we found that he didn't even have L1 while bootloader was locked, so it seems like the keys were lost somehow.

    I would first check that you get L1 in a locked BL state before following the steps I just listed. Take the OTA again via local upgrade and lock the BL without flashing anything.
     

    avid_droid

    Senior Member
  • Aug 24, 2019
    1,884
    636
    Maui,Hawaii
    OnePlus 9 Pro
    Only need to lock BL if you want to test for L1 while locked.

    In my experience with the other user not getting L1, we found that he didn't even have L1 while bootloader was locked, so it seems like the keys were lost somehow.

    I would first check that you get L1 in a locked BL state before following the steps I just listed. Take the OTA again via local upgrade and lock the BL without flashing anything.
    Im getting drunk again and about to lose a whole lot more than my keys HAHAHA. CRAZNAZN..... thank you bro
     

    grinch247

    Senior Member
    Jun 5, 2010
    658
    160
    Screenshot_20210506-135203.jpg





    Screenshot_20210506-135217.jpg
     

    avid_droid

    Senior Member
  • Aug 24, 2019
    1,884
    636
    Maui,Hawaii
    OnePlus 9 Pro
    Craznazn won't like this,but, screw it!
    If you all have some money,buy the .an a beer at least. He has been more helpful to the Op9pro than anyone I've seen yet! PERIOD! Pay this man with some gratitude folks. All of us Tmo users need to!
     

    sunxutian

    Member
  • Jan 22, 2015
    23
    3
    Only need to lock BL if you want to test for L1 while locked.

    In my experience with the other user not getting L1, we found that he didn't even have L1 while bootloader was locked, so it seems like the keys were lost somehow.

    I would first check that you get L1 in a locked BL state before following the steps I just listed. Take the OTA again via local upgrade and lock the BL without flashing anything.
    Tried relock BL and has L1 and unlock BL, downgrades to L3 again, Magisk hide doesn't work so still L3, tired of doing it again, will leave it as L3 for now I guess
     

    Top Liked Posts

    • There are no posts matching your filters.
    • 1
      If I'm on EU can I use oxygen updater to convert to India for the new 7.7 update?
      Yes just remember to reflash the modem when done
      1
      So, how does someone go about backing up the modem if you need root to do a backup? Forgive my ignorance, I haven't rooted in a few years and I think some things have changed haha :p Please advise on how to perform a system backup without root?

      Edit: Sorry, I just found the info on how to use EDL :p excuse this post haha
      1
      Just did this conversion last night. And boy was I 🤔 confused. ( New to the oneplus) But I got it done and all is working perfect on the latest 11.2.6.6 . All security issues pass on L1 and still rooted and magisk... Thank you to all that put in time and effort into this..👍👍👍👍
      Screenshot_20210612-083851.jpg
    • 5
      *** Use this at your very own risk.
      *** You will lose all data
      *** Backup your working modemst1/2 and persist. If you lose these for any reason, it's unique to your device and not recoverable if you didn't back up (via MSM or other people).
      *** Read the entire post and follow the steps closely before asking for help. Post all error messages and steps you took. If you just ran a bunch of unknown commands, I would tell you to MSM.
      *** Know how to use the MSMTool, Don't start before figuring it out. https://forum.xda-developers.com/t/op9pro-repository-of-msm-unbrick-tools-tmo-glo-in.4272549/
      *** DO NOT ATTEMPT THIS IF YOU ARE NOT FAMILIAR WITH ANY STEP DESCRIBED IN THIS GUIDE



      Disclaimer: I initially did not want to release this conversion because you still need to unlock the bootloader to fix modem, but this conversion lets you unlock the bootloader without needing unlock.bin. Since OnePlus's website is currently broken, the only way to backup the partitions above is via EDL. I've had the conversion tested and there seem to be no issues, and you can make the backups afterwards. Just keep in mind that if something goes wrong and the above partitions are lost, you are really screwed and there's no way back. If you are not comfortable with this, turn back now.

      General notes:

      • NR and LTE bands are read only and not modifiable, not in modem.img or any other partition. You cannot get global bands by flashing a global ROM, nor can you lose TMO bands by flashing another ROM.
      • The T-Mobile modem is not compatible with any other variant's NON-HLOS, meaning you need to flash back the T-Mobile modem in order to have cell connectivity.
      • Dual-SIM does not work.

      Prerequisites:
      • You must be SIM unlocked. This conversion will not SIM unlock you.
      • Verify "Enable OEM unlocking" is not greyed out in Developer Options
      • Familiarity with MSMDownload tools. If the regular MSM tool doesn't work for you, turn back now.
      • Back up all data, it will be wiped.

      Download:

      Steps:
      1. Unzip both the conversion and modem zip files.
      2. Execute MSMDownloadTool V4.0.exe and msm normally.
      3. Connect to wifi (not sure if necessary)
      4. Go to Developer Options -> Enable OEM Unlocking. If this is greyed out, it means you are still SIM locked and didn't read the whole guide (You may need to reboot a few times, but if it stays greyed you are still locked). MSM back to T-Mobile and get it unlocked first.
      5. Reboot to bootloader
      6. Unlock your bootloader, no unlock.bin needed:
        Code:
        fastboot oem unlock
        or
        Code:
        fastboot flashing unlock
      7. Follow instructions on phone to unlock bootloader.
      8. Boot back to bootloader and flash modem:
        Code:
        fastboot flash modem_a NON-HLOS.bin
        fastboot flash modem_b NON-HLOS.bin
      9. You are done converting. Make sure to keep NON-HLOS around, you'll need to flash it after every OTA.

      Fastboot method:
      * The steps in this guide will convert your TMO LE2127 to EU 11.2.3.3. This is intentionally not the latest version to force you to take a FULL OTA.
      * You can use this guide to convert to your own variant by extracting payload and flashing from a full OTA. No support will be given if you choose to manually do it.
      * Use the latest platform tools: https://developer.android.com/studio/releases/platform-tools. DO NOT USE MINIMAL ADB, it has not been updated for years.
      * Fastboot can't see your device? https://forum.xda-developers.com/t/...stboot-mode-windows-10.4194491/#post-84943553
      * Test that you can boot to fastbootd prior to starting, "fastboot reboot fastboot" and you should see the OnePlus logo with the text "fastbootd" on top. Do not continue if this doesn't work.
      * When encountering issues, describe all steps you took, paste any outputs, and take screenshots. Make sure to include the output of fastboot --version in your post.

      Steps to convert your device to EU
      1. You need your device bootloader and SIM unlocked. See https://forum.xda-developers.com/t/how-to-unlock-the-t-mobile-bootloader.4256319/
      2. Download and unzip the conversion package:
        • EU 11.2.3.3
          MD5: cb949816fa80d5f0d984359b819426c3
      3. Boot to bootloader.
        • From adb:
          Code:
          adb reboot bootloader
        • From fastboot/bootloader:
          Code:
          fastboot reboot bootloader
      4. Execute "flash_all.bat" from the unzipped directory from step 2.
      5. Reboot into recovery, and wipe everything.
      6. Once fully booted, connect to WiFi and download Oxygen Updater and take the FULL OTA (11.2.4.4 as of this writing)
      7. Do a regular reboot, don't reboot to fastbootd, bootloader, recovery, etc. Reboot to system.
      8. Reboot into bootloader or fastbootd, and flash the T-Mobile modem.
        Code:
        fastboot flash modem NON-HLOS.bin
      9. After each Full OTA you take in the future, you will need to repeat step 7 & 8

      FAQ
      • Q: The most recent version is 11.2.4.4, why is this guide converting to 11.2.3.3?
        A: You didn't read the full post.
      • Q: Why is there no conversion to Global?
        A: Global variant uses the Google incremental OTA server, and full OTAs are not always provided. There's no functional difference, and EU has better privacy requirements anyways. You can do it manually by extracting payload.bin and running the same flash script. No support will be provided if you choose to flash to Global.
      • Q: Can I re-lock the bootloader after conversion?
        A: While you can go ahead lock your bootloader after conversion, I don't recommend it as you will not be able to take incremental OTA due to modem changes, and lose connectivity if you take a full OTA. To fix it, you need to unlock the bootloader and end up wiping.
      • Q: Where is the Linux guide?
        A: Too lazy, if you're using Linux, you can make your own bash script from the Windows batch script.
      • Q: Help, I see is 'fastboot' is not recognized as an internal or external command.
        A: Your fastboot.exe is not in your $PATH. You can either drop fastboot into the same folder as flash-all.bat, or you can fix your $PATH
      • Q: Help, I cannot boot to fastbootd because previous flashes messed things up.
        A: MSM
      • Q: Help, "not enough space to resize [system, product, system_ext]"
        A: MSM. If the error is on Vendor, it might still work and boot with a generic Android boot logo. If so, take the full OTA as described in the guide.
      • Q: Help, something went wrong!
        A: Post in here the starting state of your device (Device model, ROM version, etc), all steps you've taken since unlocking bootloader, and the output of whatever is causing you trouble. Chances are, the answer is MSM, but read my MSM warning.
      • Q: Help, I see "Invalid sparse file format at header magic"
        A: Ignore this message, not an error


      Fixing the About Phone page

      These steps are optional, and will fix the "About Phone" page. There are no performance differences. All that's done is change build.prop to reflect the correct model.
      1. You need to rooted with Magisk
      2. Download and install the magisk module: here
      3. Reboot, the About Phone page is filled out.


      Issues so far (please post if you run into more):
      • Dual SIM does not work
      • Dialer's vvm doesn't seem to work with T-Mobile, might be a T-Mobile issue though.
      • You must flash the T-Mobile modem after every OTA
      • Wildvine L1 is a crapshoot, you may or may not be lucky. Worked for me with only magiskhide enabled and blocking Google Play Services, but many people not having the same luck.
      What appears to work:
      • Everything else.

      Much appreciation for everyone that help develop and test
      @razercortex
      @retryfail
      @amaroney55
      5
      Due to OnePlus's incompetence on running a website, the MSM conversion is released today to enable bootloader unlocking for folks who are SIM unlocked but can't download an unlock.bin
      2
      Goodness man. Presently I see where I wrecked. I did the EU 11.2.4.4 and not the 11.2.3.3. much obliged for this and clearing that up. Likewise, thank you again for assisting me with saving my mobile. JBBattery
      2
      Well, OnePlus sent you link to your email.
      why you don't try to redownload?
      Because OnePlus broke their website and you can't download a working unlock.bin anymore.
      1
      Just did this conversion last night. And boy was I 🤔 confused. ( New to the oneplus) But I got it done and all is working perfect on the latest 11.2.6.6 . All security issues pass on L1 and still rooted and magisk... Thank you to all that put in time and effort into this..👍👍👍👍
      Screenshot_20210612-083851.jpg