If you want, I can:
(related search suggestions will be generated)
From recovery mode (not Fastboot), you can sideload OTA updates: blackberry fastboot driver
adb sideload update.zip
Cause: Windows power management turning off the USB port.
Fix:
Cause: Driver not loaded or device in wrong mode.
Fix: Reboot the BlackBerry into Fastboot again. Check Device Manager—if you see "QHSUSB_BULK" or "Qualcomm HS-USB QDLoader 9008", you are not in Fastboot; you are in Emergency Download (EDL) mode. That requires different tools (QPST). If you want, I can:
Before diving into the fix, you must understand the problem. When you boot a standard Android phone into Fastboot mode (using adb reboot bootloader or Volume Down + Power), it usually shows up under "Android Device" or "Fastboot Interface" in Device Manager.
BlackBerry devices, however, often use custom USB VID/PID (Vendor ID/Product ID) combinations. TCL-manufactured BlackBerry phones frequently present themselves as "Reliance Communications" or a generic "Android" device without a proper driver signature. Additionally, older BlackBerry OS devices (non-Android) use entirely different communication protocols (like loader.exe), which are not Fastboot-compatible. (related search suggestions will be generated)
Critical Note: This guide applies only to BlackBerry devices running Android OS:
If you have a BlackBerry Bold, Curve, or Classic (BBOS 10), stop here—Fastboot does not apply to you.