Mi Mix 3 5G EEA Stable V12.0.1.0
OTA Apply to V10.3.25.0
https://bigota.d.miui.com/V12.0.1.0.PEMEUXM/miui-blockota-andromeda_eea_global-V10.3.25.0.PEMEUXM-V12.0.1.0.PEMEUXM-a6f0717cf5-9.0.zip
Recovery ROM
https://bigota.d.miui.com/V12.0.1.0.PEMEUXM/miui_ANDROMEDAEEAGlobal_V12.0.1.0.PEMEUXM_9e4961bf09_9.0.zip
>>> All firmware: xiaomifirmware.net