A: Generally, no. Console save files are encrypted and tied to your profile. There are unofficial homebrew methods (jailbroken Switch only), but they risk a ban. PC only for safe use.
Rename the file to persistentgamedata1.dat (to replace Slot 1), persistentgamedata2.dat (Slot 2), or persistentgamedata3.dat (Slot 3). The Binding Of Isaac Repentance 100 Save File Download
– Copy rep_persistentgamedata1.dat , rep_persistentgamedata2.dat , and rep_persistentgamedata3.dat to a safe folder. A: Generally, no