Not sure if anyone is still having this issue but I found out the problem. Yes you are using incorrect keys from an outdated lockpick app. I tried using the one I already had that I installed a long time ago and it still wasn't working for 4NXCI. I don't know why you have to use an updated lockpick app but that's the way it is. Download the latest lockpick.bin from Github and inject that .bin into your Switch using TegraRCM and dump your keys through that, only then will you get your latest keys. It'll dump your keys into a prod.keys folder and put that into 4NXCI's root folder and load that keyset. Hope this helps.
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(created an account just for this) Not sure if anyone is still having this issue but I found out the problem. Yes you are using incorrect keys from an outdated lockpick app. I tried using the one I already had that I installed a long time ago and it still wasn't working for 4NXCI. I don't know why you have to use an updated lockpick app but that's the way it is. Download the latest lockpick.bin from Github and inject that .bin into your Switch using TegraRCM and dump your keys through that, only then will you get your latest keys. It'll dump your keys into a prod.keys folder and put that into 4NXCI's root folder and load that keyset. Hope this helps.