Hacking Question Switch RCM device descriptor request failure

musumenon · Jul 16, 2020

Hello.
I own two Swich and both were able to play CFW.
Both have no problem working with OFW, but when one of the Swich was connected to the PC with RCM, a problem occurred and this device stopped. (Code 43) An unknown USB device (device descriptor request failure) is displayed.
Since it is in this state, there is no reaction even with Android.
The other Swich is fine.
There is no doubt that it is RCM.

Two PCs, two Androids, three USB cables all have the same response.
OFW recognizes the device as a Nintendo Switch.

Is something broken?
Is there any way to solve it?

godreborn · Jul 16, 2020

reinstall the drivers. that's a pc error meaning that something is corrupted somewhere. I've seen it happen with my bluetooth. reinstalling the drivers fixed it.

musumenon · Jul 16, 2020

Of course, I repeatedly reinstalled the driver.
I also replaced the USB cable. Under the same conditions, one is no RCM and the other is RCM OK.

giftmetonnes · Dec 5, 2021

I had the same problem as well. In case it helps someone:

Follow these CAREFULLY. Skip Steps 1-4 if you are starting cold; haven't screwed up the first time.

Unplug your Switch from the computer (this won't kick you out of RCM; don't worry)
Under Settings > Apps > Apps & features, look for "Windows Driver Package - libusbK Nintendo Switch APX Mode ([date] [version])".
Uninstall it.
Restart your computer
Start TegraRcmGUI
Go to Settings > Install Driver
"Yes" (otherwise you wouldn't be able to continue; duh. If it doesn't bring up the dialog again, restart TegraRcmGUI)*
Restart your computer
Plug your Switch into the computer again
You should now be able to push payloads.

If at Step 10 it is still erroring, you should probably look at getting a different cable or checking the power on your USB ports.

*Did someone forget to Dispose() and null the Winform Window after it's closed?

fabio85 · Aug 8, 2022

musumenon said:
Hello.
I own two Swich and both were able to play CFW.
Both have no problem working with OFW, but when one of the Swich was connected to the PC with RCM, a problem occurred and this device stopped. (Code 43) An unknown USB device (device descriptor request failure) is displayed.
Since it is in this state, there is no reaction even with Android.
The other Swich is fine.
There is no doubt that it is RCM.

Two PCs, two Androids, three USB cables all have the same response.
OFW recognizes the device as a Nintendo Switch.

Is something broken?
Is there any way to solve it?

Hello,
I have the same issue, followed your instructions, however even changing the laptop same output. my switch has atmosphere 1.3.2 and fw 14.1.0 with hekate 5.8.0 and RCM auto enabled.....what's wrong with it ?!

Hacking Question Switch RCM device descriptor request failure

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