However, upon further investigation, I found out that you could easily carry out this conversion on a locked bootloader. And this was one of the major reasons why some users were hesitant to try out this conversion. While there are quite a few methods through which you could cross flash the firmware of another carrier, however, most of them require an unlocked bootloader.
In this guide, we will show you the steps to convert your OnePlus device from T-Mobile/Metro to Global on a locked bootloader. Convert OnePlus T-Mobile/Metro to Global on Locked Bootloader … On that note, this tutorial will show you the steps to convert the OnePlus 9 Pro T-Mobile to the EU via MSM Download Tool without using the unlock.bin file. Be it for flashing custom ROMs, installing custom recovery, gaining administrative privileges by rooting via Magisk, or flashing the OFP firmware via MSM Tool to unbrick your device, the possibilities stand endless.
And the ninth iteration is no different either. With that said, one major saving grace for these devices is the fact that they are quite a popular name in custom development.
