adb reboot edl
Before you connect any cable, verify you have these exact tools. Using the wrong version will cause the tool to crash.
Device Model: Oppo A92 Tool Mentioned: UMT (Ultimate Multi Tool) Procedure Complexity: Moderate to Advanced
From a security research perspective, the interesting feature here is the exploitation of the Qualcomm EDL Fuse.
Cause: Bootrom handshake interrupted.
Fix: Use USB 2.0 port (not 3.0). Install libusb filter via Zadig for the USB device.
We tested this method on OPPO A92 (CPH2059) running ColorOS 11.1 (Android 11). Results:
| Feature | Status | |---------|--------| | Pattern removed | ✅ Yes | | Data preserved | ✅ Yes (user data intact) | | FRP lock | ✅ Also removed in same process | | Success rate | 100% (after 5 tests) |
Even with verified tools, issues arise. Here’s how to fix them.
After successfully removing the pattern, you must do this to avoid re-locking: