Try a different USB port (preferably a USB 2.0 port on the back of the motherboard rather than a USB 3.0 port) or swap out the micro-USB cable.
(Qualcomm variants); files for the STL100-1 are incompatible. Clean ROM Options : Community members on Reddit's r/blackberry blackberry z10 stl1003 autoloader 1033 download high quality
Complete Guide to Downloading the BlackBerry Z10 STL1003 OS 10.3.3 Autoloader Try a different USB port (preferably a USB 2
[Guide] How to Load an OS Using Autoloader. - CrackBerry forums blackberry z10 stl1003 autoloader 1033 download high quality