Assuming your NSP files are OK, that only leaves your USB ports or your USB-C cable as possible culprits. Have you tried other cables/ports?I used the GUI version before on Windows 7, and it worked fine. The cli version also works fine, even on Linux, but it's made for Windows. It should work for you too. I'd say the developer has done a fine job, as his software, although kind of old, still works and is useful with the latest nsp files, as long as you're using a recent prod.keys. What version of Windows are you using? Maybe try running in retro-compatibility mode, or something. I'm not much of a Windows user, anymore, although I still have access to Windows 7. Assuming your NSP files are OK, that only leaves your USB ports or your USB-C cable as possible culprits. Have you tried other cables/ports? Worst case scenario, you'll have to resort to copying the files by hand to the SD card, but it's really not too great, as the SD port is flaky on the Switch, and the less you insert and remove the SD card, the safer you are from a hardware malfunction.
-> I have ust tried with a different usb-c cable and the transferring was ok. But it cannot be installed. There must be something else. A little step done, anyway. Could someone help?
Thank you





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