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General [MODEM] [9Pro] Tmobile

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1NewbieRooter

Member
Jul 22, 2021
8
3
OnePlus 6T
OnePlus 9 Pro
i flashed the modem.img in fastboot after installing lineage os 18.1 & gapps. There was no signal in the beginning as the modem was deleted I guess. This modem.img was perfect (lifesaver) for me. After rom set up, it is picking up signal and recognizing sim no issues.

regular fastboot:
fastboot flash modem modem.img

***I have a OnePlus 9 Pro (tmobile)
 
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freddienuxx

Senior Member
Dec 11, 2012
1,626
307
OnePlus 8 Pro
OnePlus 8T
I flashed the modem and wow I have never seen this before
 

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  • 1
    fizzy and libra420t

    tmo flasher has a script error in the .bat file. modem
    _b.img is mkdem_b.img
    1
    fizzy and libra420t

    tmo flasher has a script error in the .bat file. modem
    _b.img is mkdem_b.img
    fixed will upload
    *edit
    uploaded 👍
  • 2
    i mad a simple script just enable usb debugging and run bat itll do everything for you
    1
    Thread updated Guys 😊
    Get flashing, modem_b now included

    Special Thanks to @FizzyAps for script 👍
    1
    Thread updated Guys 😊
    Get flashing, modem_b now included

    Special Thanks to @FizzyAps for script 👍
    hope you all enjoy
    1
    Anyone willing to flash back to tmobile 11.2.3.3 (via Tmo MSM), and backup every single img; compress & share here or TG for me? 🤔
    1
    fizzy and libra420t

    tmo flasher has a script error in the .bat file. modem
    _b.img is mkdem_b.img
  • 10
    EXPLICITLY FOR ONEPLUS 9 PRO
    This thread is created to provide all who need T-Mobile Modem.imgs, from loss of service due to an OTA, Flashing, or EU & IN Conversion gone wrong....​
    Also to prevent cluttering up other threads with same question. 👍
    IMPORTANT!!! (T-mobile Variant)​
    - Backup your Modem images from T-mobile using a Partition Backup app.​
    - Backup both; Modem_A & Modem_B (very important)​
    Partitions backup app link provided 👇 👇 (Root Needed)​
    Tmobile MSM tool provided 👇 👇(In case things go wrong)​
    ***THIS IS NOT A PERMANENT FIX
    {(((<You will have to FLASH Tmo Modems after every LOCAL & OTA Update>)))}​
    --- Fastboot Flash Modems Imgs​
    - Fastboot Modem Script now provided (just unzip run bat file)​
    - Also just fastboot imgs as well​
    For extended and accurate conversions visit TG 👇
    Join «T-Mobile Oneplus 9 Pro Support» on Telegram: https://t.me/Tmo_OP9P
    Donations welcomed:​
    Cash App: $Libra420T​
    ***THINGS TO KNOW​
    -If from T-mobile, flashing to custom rom, service should be fine...(always backup)​
    -If using EU & IN conversion to avoid unlock.bin, then you absolutely need to flash modem after every update...​
    -Have other variant(s) and/or have T-mobile service​
    ***REASONS TO BACKUP MODEM​
    -Other variant OTA updates causes Tmo modem to be replaced..​
    -EU & IN conversion does the same...​
    -Or just want Tmo modem instead of stock (oxygen) because you have T-Mobile service on unlock 9 pro​
    Special Thanks to:​
    (For providing fastboot Script)​
    Good luck, Happy Flashing​
    &​
    BE RESPONSIBLE 😊👍
    3
    Holy crap guys,
    don't mess with or share modemst1/2
    don't mess with or share modemst1/2
    don't mess with or share modemst1/2
    don't mess with or share modemst1/2
    don't mess with or share modemst1/2
    don't mess with or share modemst1/2
    don't mess with or share modemst1/2
    don't mess with or share modemst1/2

    DON'T MESS WITH OR SHARE MODEMST1/2


    It contains your device specific info, device specific NV data, IMEI, etc. Flashing someone else's modemst will screw up your device and lose all cellular capability (and you are completely SOL if you don't have a backup), and someone with your modemst might be able to clone your IMEI.

    This is why my guides all tell you to back them up, so you can restore it in case something goes wrong. You should not be messing with it unless you know what you're doing.

    The only modem file you need to flash on to a OP9P conversion is modem.bin, AKA NON-HLOS.
    2
    11.2.6.6 Modem uploaded 😊 👍
    2
    DO NOT FLASH modemst1 or modemst2.

    Thanks @craznazn. Will delete files from folder so the modem_a and modem_b are the only two files in there. Also, these are the modems from the Pro variant. OOS 11.2.5.5. T-Mobile firmware.

    Edit: files removed.
    2
    Okay, gimme a few. Gotta start up my ancient laptop and throw it on the otg drive, upload it to gdrive, and I'll post the link here. 😎

    Edit: Link Posted. https://drive.google.com/drive/folders/1LFEy0q58Dke1t_Uh7bdTxdp-wY0YFs_Z?usp=sharing

    Modem_a/_b are fastboot flashable. Modemst1/st2 have to be flashed via fastbootd.

    Fastboot flash modem_a modem_a.img

    Fastboot flash mkdem_b modem_b.img

    Fastboot reboot fastboot

    Fastboot flash modemst1 modemst1.img

    Fastboot flash modemst2 modemst2.img

    Fastboot reboot

    These can also be replaced in payload.bin firmware fastboot roms. Just extract via payload dumper, place these modem files into the rom, then fastboot flashall in fastbootd.