I have an old LS4278-SR2015TZZWR in IBM HANDHELD mode and have installed the latest Windows SDK on Windows 10 64-bit. When I run the Scanner SDK C# Sample Application, the cradle and the scanner appear in the Connected Scanners list, and I can indeed get barcode events from the scanner. But attempting to beep the beeper with opcode 6000 doesn't work -- I get a status of 0, indicating that it should have worked, but there's no beep.
I found this post which seemed to match problem exactly, and he said he fixed it by updating to the latest firmware, except that 123Scan can't find firmware for this device:
Any ideas how I might be able to beep the beeper programmatically, or to update the firmware -- or do I have a white elephant here? Thanks!