Technically, yes, but you will clone the other person's lock screen and app data. It will not boot properly due to encryption differences (Android's dm-default-key ). Always use the userdata.img from the stock ROM meant for your specific build number (e.g., A37m_11_A.20).

If the screen lock password is unknown and cannot be wiped, the userdata must be formatted using SP Flash Tool by selecting the correct scatter file and choosing the format option (targeting the userdata partition), usually requiring MediaTek USB VCOM drivers. 4. Backup & Restoration

| Directory | Purpose | |-----------|---------| | app/ | User-installed APKs (split into base.apk , lib/ , oat/ ) | | data/ | App private data (shared preferences, databases, files) | | dalvik-cache/ | Optimized DEX files (ART/Dalvik cache) | | misc/ | WiFi config, VPN, system keystore, etc. | | system/ | Overlay files, ringtones, wallpapers (not system partition) | | media/ | Shared storage emulation (internal SD) — often symlinked to /storage/emulated/0 | | property/ | Persistent system properties | | resource-cache/ | System resource caches | | backup/ | Some OTA or Google backup remnants | | nativetest/ , nativebenchmark/ | (Rare) Developer test binaries |

Because the OPPO A37m uses a MediaTek processor, technical adjustments are typically performed using specific PC-based tools: Oppo A37M MT6750 Firmware Flash File - Facebook