Requirements: Latest tvOS version with checkra1n and a Mac with SignApp (https://github.com/Diatrus/SignApp). Apps cracked on older tvOS versions will not work on newer tvOS versions.
1. Add https://diatr.us/nito/to your NitoTV sources and install bfdecrypt.
2. In NitoTV, go to Settings > Applications > (Application you wish to crack) > Decrypt Application.
3. It will then launch the app, crack it, and request to airdrop it. Airdrop it to your Mac.
4. Run 'SignApp (path-to-decrypted-ipa)'
5. Get the cracked ipa from ~/Documents/SignApp/
Again: **Please do not forget to crack on tvOS 13 and sign with entitlements like is done automatically with SignApp. If you fail to do this, installing will not work on any version other than the one you are on...**
You can also get AppSync for tvOS from Diatrus repo I see...