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Will Flashing param.bin Fix Target Region Issues for OnePlus MSM Download Tool Users? Is Your OnePlus 9 Pro Stuck on IN Region? Here’s How to Use the T-Mobile MSM Tool
When the MSM Download Tool displays “Target stuck on IN” (India region), you cannot use the T-Mobile MSM Download Tool to unbrick or restore your OnePlus 9 Pro. This issue is caused by the device’s region information being locked in the param.bin partition. To resolve this, you need to flash a T-Mobile-compatible param.bin file.
Step-by-Step Solution
- Acquire a param.bin file from a T-Mobile OnePlus 9 Pro. This can be extracted using the MSM Download Tool’s Readback mode or via root-enabled adb commands. Community forums like XDA may have shared param.bin files suitable for this process.
- Download and extract Android SDK Platform Tools on your computer.
- Transfer the T-Mobile param.bin file into the platform-tools folder.
- Enable USB Debugging and OEM Unlocking on your device in Developer Options.
- Back up all important data, as this process may wipe your device.
- Bootloader unlocking is required for flashing partitions via fastboot. This will erase all data.
- Connect your device to the PC.
- Open a command prompt in the platform-tools directory.
- Enter the following commands:
adb reboot fastboot
(Device enters FastbootD mode)
fastboot flash param param.bin
(Flashes the new param.bin)
fastboot reboot
(Reboots to system)
- With the correct param.bin flashed, your device’s region is now compatible. You can now use the T-Mobile MSM Download Tool without encountering the “Target stuck on IN” error.
- The MSM Tool will relock your bootloader. To unlock again, generate a new unlock token and use the fastboot command:
fastboot flashing unlock
Key Points
- Flashing param.bin changes the region information, enabling MSM Tool compatibility.
- The process wipes all device data and relocks the bootloader.
- Always use the correct param.bin for your device model and carrier variant.