Hello, First off, I want to think Coopervid for forwarding Billycarr11's "Easy and Safe" Flash patcher kit. I have about 20 of LG's WH16NS40 drives that bought over the past 3 years, and only in the past few weeks did I discover the dreaded 1.3 firmware that block for UHD-friendly disc playback. So... I patched the affected drives all seems to be working perfectly now. However, getting too eager, I also tried to patch an older WH14NS40 drive, not realizing it was *not* an NS50 chip device. The result is the drive will still appear in windows device manager, open and close, but it won't play anything now. Any attempt to re-flash it with the factory authorized v1.03 firmware files fail with a checksum error. So, any suggestions on how to recover my afflicted drive, since it still seems addressable? I tried "reading" the firmware from another identical, working, WH14NS40, but DOSFLASH gives me an invalid chip error. Any suggestions? I can't seem to find any earlier flash tools that might let me rescue my crippled drive. Thanks!!