I searched in Win 11, where there is a problem when installing the 1.2.1 driver. I documented everything and sent it to technical support Ticket ID: 498297. After the release of 1.3, I did the same thing again. This message was passed:
For the Stadium Bulk Transfer interface:
USB\VID_0E41&PID_4842&MI_06
Windows correctly selects the Line 6 WinUSB driver package (L6WinUsb.inf / oem27.inf), but the install fails because the driver’s device class cannot be installed:
“Class {5f126d9c-01ea-4fb3-9274-7250c529cf08} does not exist.”
“Installing device class: ‘Line 6’ {5F126D9C-01EA-4FB3-9274-7250C529CF08}.”
“Could not locate section [ClassInstall32].”
Install fails with 0xe0000206, then Windows installs a NULL driver.
As a result, Device Manager shows “Helix Stadium Bulk Transfer” with Code 1 and no driver files loaded (“installation class was not found or is invalid”), and Line 6 Central cannot detect the device over USB (so USB firmware update is blocked).
This strongly suggests the current L6WinUsb.inf package is missing the required class installation section (ClassInstall32/ClassReg) or otherwise does not properly register its custom device class on Windows.
It's true that update 1.3 didn't fix the problem.
Petr Z.
