: Backup all photos, contacts, and documents via Huawei HiSuite.

At 98%, the tool hung. A red error message flickered. !error: secure check fail

Resolves instances where the phone gets stuck on the Huawei logo.

Download and install the latest version of the official Huawei HiSuite client on your Windows PC.

: Community-verified firmware for specific regional builds like MAR-LX3A C605 can be found on sites like Pro-TeamMT database Firmware Details for MAR-LX3A EMUI 10 (Latinoamerica) 9.1.0.318(C605E5R4P2patch01) Android 9.1 9.1.0.215 (C605E5R4P2) Installation Guide (DLOAD Method)

Avoid flashing an older Android/EMUI version than what is currently installed. Huawei's security features will block downgrades, which can result in a hard-brick.

If your phone becomes unresponsive after flashing, attempt the method first—it is the most resilient offline recovery option. If that fails, use SP Flash Tool with test point mode to force the device into flashing state.