Esp628.part1.rar -

RAR split archive part 1. You will need all subsequent parts (part2, part3, etc.) to extract the file, as it is likely a compressed file for ESP-based hardware (such as Espressif ESP8266 or ESP32 modules).

Download all .part files associated with this project (e.g., .part2.rar , .part3.rar ) into the same folder, then use a tool like WinRAR or 7-Zip to extract them. If you can share: esp628.part1.rar

did you download the file from (a specific site, forum, or GitHub link)? What is the full list of part files you have? RAR split archive part 1

I can help determine the exact nature of the file and how to use it. If you can share: did you download the

Without the specific source or full set of files, it is impossible to know the exact contents, but it is typically a firmware binary file , a source code project folder , or project documentation for an ESP chip project.