This specific version is widely associated with older Realme and Oppo models. It is frequently sought after because:
| Error Message | Cause | Solution | |----------------------------------------|-------------------------------------|--------------------------------------------------------------------------| | "Sahara communication failed" | Driver issue or wrong COM port | Reinstall Qualcomm drivers. Use a USB 2.0 port. Try a different cable. | | "Firehose fails to load" | Wrong MSM tool version for device | Double-check OPS file name. Ensure device is really in EDL mode. | | "SHA256 mismatch – aborting" | Trying to downgrade locked device | Uncheck "SHA256 check" in the tool (only if downgrading). | | "Param preload failed" | Corrupted OPS file | Re-download the firmware pack. Do not rename OPS file. | | "Device not found in EDL" | Windows drivers not loaded | Run Driver Signature Enforcement Off . Manually install qcser.inf . | | "Download fails at 94% (userdata)" | NAND memory bad sectors | Use MSM tool's "Force Erase All" option (available in advanced settings).| msm tool v4.0.28 download