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We loaded a rawprogram, patched the bootloader, and sent the firehose loader. Serial output:
I plugged it into the Linux laptop. lsusb showed:
Sahara protocol v2 Sending 1024 bytes... Firehose handshake OK The device rebooted. The logo appeared. install driver qualcomm hs-usb qdloader 9008
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.
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 . We loaded a rawprogram, patched the bootloader, and
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.
The device changed from “Unknown” to: A small green checkmark. The COM port opened. QPST’s QFIL finally saw the Sahara protocol. Firehose handshake OK The device rebooted
No signing bypass needed on Linux — just modprobe -r qcserial and a custom udev rule:
Bus 002 Device 009: ID 05c6:9008 Qualcomm, Inc. Gobi Wireless Modem (QDL mode) QDLoader 9008. The emergency download mode. The last heartbeat before the brick.
