This version ships with a more robust prog_emmc_firehose driver set that works across:
Once you have the package downloaded and extracted to a folder (avoid spaces in the path), follow these steps precisely. msm tool v4028 download top
Reflashes the official OxygenOS (OnePlus) or ColorOS (Oppo) onto the device. This version ships with a more robust prog_emmc_firehose
: Flashing firmware via MSM Tool wipes all user data . Back up your files beforehand if possible. Back up your files beforehand if possible
Extract the firmware zip archive using an extraction utility like WinRAR.
| Error Message | Likely Cause | Solution | |---|---|---| | Sahara Fail: QSaharaServer Fail | Wrong driver version or USB 3.0 port | Switch to USB 2.0 port; reinstall Qualcomm drivers. | | Firehose: Invalid SHA256 | Corrupt loader or mismatched auth | Replace prog_firehose.elf with a version from your device’s stock OTA. | | ERROR: function: rx_data:247 | Bad USB cable or unstable power | Use a short, high-quality USB 2.0 cable + powered USB hub. | | NOP: Unsupported version v4028 | You have a fake build | Re-download from a verified source (compare SHA-1 hash). | | Sahara failed. Trying again | EDL timeout; device reboots | Short EDL test points on the motherboard (last resort). |