Warning: Flashing the wrong Firehose loader will permanently short the eMMC. Double-check your CPU model via the phone's PCB silkscreen.
Here are the trusted driver packages that work for both OPPO and VIVO devices. oppo vivo usb driver fix 9008 link
This is the universal driver for all devices running Qualcomm chipsets (which includes 90% of OPPO and VIVO phones). Warning: Flashing the wrong Firehose loader will permanently
Here is the confusion. Many users search for "OPPO 9008 firmware download" and get massive 3GB ROM files. That is the full firmware. But to flash it, you need a tiny file called the Firehose Programmer or 9008 Link. Here are the trusted driver packages that work
Think of it this way:
Without the correct 9008 link, flashing tools (QPST, MSM Download Tool, SP Flash Tool) will throw errors: Sahara Protocol Error, Firehose fail, or Cannot communicate with port.