[OnePlus 10 Pro] mark332:
here is the instructions to flash any region ROM on OnePlus 10 Pro

Disclaimer:

use at own risk

Links:

NE2215export_11_C.26_202301101951016 : Download

NE2213GDPR_11_C.21_2022102318590000: Download

Steps:

unlock bootloader

plug in bootloader mod

open cmd

locate edl rom dir

send below code

fastboot flash modem_a radio/modem.img

fastboot flash modem_b radio/modem.img

fastboot flash boot_a images/boot.img

fastboot flash boot_b images/boot.img

fastboot flash vbmeta_system_a images/vbmeta_system.img

fastboot flash vbmeta_system_b images/vbmeta_system.img

fastboot flash vbmeta_a images/vbmeta.img

fastboot flash vbmeta_b images/vbmeta.img

fastboot flash vendor_boot_a images/vendor_boot.img

fastboot flash vendor_boot_b images/vendor_boot.img

fastboot flash vbmeta_vendor_a images/vbmeta_vendor.img

fastboot flash vbmeta_vendor_b images/vbmeta_vendor.img

fastboot reboot fastboot

fastboot flash --slot=all init_boot images/init_boot.img

fastboot flash --slot=all aop radio/aop.img

fastboot flash --slot=all aop_config radio/aop_config.img

fastboot flash --slot=all bluetooth radio/bluetooth.img

fastboot flash --slot=all cpucp radio/cpucp.img

fastboot flash --slot=all devcfg radio/devcfg.img

fastboot flash --slot=all dsp radio/dsp.img

fastboot flash --slot=all dtbo images/dtbo.img

fastboot flash --slot=all my_engineering images/my_engineering.img

fastboot flash --slot=all system_dlkm images/system_dlkm.img

fastboot flash --slot=all vendor_dlkm images/vendor_dlkm.img

fastboot flash --slot=all my_stock images/my_stock.img

fastboot flash --slot=all my_stock images/my_stock.img

fastboot flash --slot=all my_preload images/my_preload.img

fastboot flash --slot=all my_heytap images/my_heytap.img

fastboot flash --slot=all my_carrier images/my_carrier.img

fastboot flash --slot=all my_region images/my_region.img

fastboot flash --slot=all my_bigball images/my_bigball.img

fastboot flash --slot=all my_manifest images/my_manifest.img

fastboot flash --slot=all engineering_cdt images/engineering_cdt.img

fastboot flash --slot=all featenabler radio/featenabler.img

fastboot flash --slot=all hyp radio/hyp.img

fastboot flash --slot=all imagefv radio/imagefv.img

fastboot flash --slot=all keymaster radio/keymaster.img

fastboot flash --slot=all oplus_sec radio/oplus_sec.img

fastboot flash --slot=all oplusstanvbk radio/oplusstanvbk.img

fastboot flash --slot=all qupfw radio/qupfw.img

fastboot flash --slot=all recovery images/recovery.img

fastboot flash --slot=all shrm radio/shrm.img

fastboot flash --slot=all splash images/splash.img

fastboot flash --slot=all tz radio/tz.img

fastboot flash --slot=all uefi radio/uefi.img

fastboot flash --slot=all uefisecapp radio/uefisecapp.img

fastboot flash --slot=all xbl radio/xbl.img

fastboot flash --slot=all xbl_ramdump radio/xbl_ramdump.img

fastboot flash --slot=all system images/system.img

fastboot flash --slot=all system_ext images/system_ext.img

fastboot flash --slot=all vendor images/vendor.img

fastboot flash --slot=all product images/product.img

fastboot flash --slot=all my_product images/my_product.img

fastboot flash --slot=all odm images/odm.img

fastboot flash --slot=all abl radio/abl.img

in the recovery select English, wipe data and reboot.