You cannot open .part02.rar by itself. You must have all parts (part01, part02, part03, etc.) in the same folder.
These are usually uploaded alongside the .rar files by the original poster. Check the same source (forum, Usenet group, or cloud drive) where you found the RAR. S2ckb0yDODI2GB.part02.rar
If WinRAR or 7-Zip says "Checksum error," you need the Recovery Record if the creator included one. Open the file in WinRAR and press Alt+R to attempt a repair. Could you clarify: Are you getting an error message when trying to open it? You cannot open
A (MD5/SHA-1) to verify the file hasn't been tampered with. 🔍 Troubleshooting the File Check the same source (forum, Usenet group, or
Do you know the or source where this file was posted?
Knowing the (e.g., a specific forum or file-sharing site) would help me identify if there is a known "paper" or password associated with that specific naming convention.