I plugged it into the Linux laptop. lsusb showed:
The device changed from “Unknown” to: A small green checkmark. The COM port opened. QPST’s QFIL finally saw the Sahara protocol.
Even on Linux, the kernel’s qcusbnet didn’t claim the device. The 9008 mode speaks a proprietary bulk‑only transport — not a modem, not storage. Just a bare-metal door to the boot ROM. install driver qualcomm hs-usb qdloader 9008
No signing bypass needed on Linux — just modprobe -r qcserial and a custom udev rule:
We loaded a rawprogram, patched the bootloader, and sent the firehose loader. Serial output: I plugged it into the Linux laptop
Windows users would have it easy — a signed driver, an .inf edit, and Device Manager magic. But I was on Ubuntu, chasing raw libusb rules.
Sahara protocol v2 Sending 1024 bytes... Firehose handshake OK The device rebooted. The logo appeared. QPST’s QFIL finally saw the Sahara protocol
SUBSYSTEM=="usb", ATTR{idVendor}=="05c6", ATTR{idProduct}=="9008", MODE="0666", GROUP="plugdev" They were on Windows 11. Secure boot on. Driver signature enforcement locked. We rebooted → Disable driver signature enforcement → Installed the .inf manually via Have Disk in Device Manager.
I found the official Qualcomm driver package: setup_qc_9008_driver.exe — useless natively. But inside, buried in Drivers/x64/ , lay qcser.inf and qcCoInstaller.dll .