| Error Message | Cause | Solution | | :--- | :--- | :--- | | Sahara Fail: QSaharaServer Fail: Process fail | Wrong driver or USB cable | Use a USB 2.0 port, replace cable, reinstall Qualcomm drivers. | | Firehose Check Valid Image Fail | Wrong programmer file | Ensure the .mbn matches your exact chipset (MSM8953 for R9s Plus). | | NOP error or Reset device failed | Phone left EDL mode mid-flash | Unplug, re-enter EDL mode (method above), restart QFil. | | Userdata image size too large | Partition mismatch | You’re flashing a larger capacity firmware (e.g., 64GB firmware on 128GB device). Find the correct dump. | | switch to EDL mode failed | Phone not in 9008 mode | Manually force EDL by shorting test points on the motherboard (last resort). |
Oppo devices (post-2016) use qualcomm encrypted bootloaders . SP Flash Tool is designed for MediaTek chipsets. QFil is the only legitimate low-level tool for the Snapdragon 653 (MSM8953) inside the R9s Plus. Attempting to use SP Flash Tool will not work and could short-circuit the motherboard’s EMMC. Oppo R9s Plus Firmware Qfil
The Oppo R9s Plus must be in (Qualcomm 9008 mode) for QFIL to communicate with it. Power off the device completely. | Error Message | Cause | Solution |
“If you flash the wrong bootloader, you’ll short the eMMC,” whispered a memory of a YouTube comment. “You’ll get a hard brick. No second chance.” | | Userdata image size too large |