"Sleeve shock download" is not a valid technical term in any major industry. It is likely a misspelling, a mishearing, a hyper-specific internal company jargon, or an error. To get a helpful answer, please provide the context where you saw this phrase (e.g., a manual, a website, a conversation about printing presses, a software error message). With that context, a precise and valuable explanation can be given.
After a thorough analysis of current technical jargon, industry terminology (in printing, packaging, manufacturing, and software), and common search queries, sleeve shock download