For a terrifying second, nothing. Then: 6a2b3c4d5e6f fastboot
But the system was still broken. The bootloop was caused by a corrupt dalvik cache . One more command:
adb shell twrp wipe dalvik
Then, using adb shell , I navigated into the phone's system partition: adb shell cd /system/priv-app/MiuiCloudService cp /data/local/tmp/com.miui.cloudservice.apk . chmod 644 com.miui.cloudservice.apk
I held the button combo: . The screen flickered. A miracle. Fastboot mode. A tiny, blue-backlit text menu. It wasn't much, but it was a door. adb tools xiaomi
The command that saved me: fastboot boot twrp-3.7.0-plato.img
Now, my phone was a digital corpse.
Fastboot is the low-level mechanic. ADB is the doctor. But to get ADB working, I needed a recovery environment. I downloaded the official "Plato" recovery ROM from Xiaomi's servers—a 4.7GB file that took 20 agonizing minutes to fetch.