ER_2GB.part16.rar is the 16th segment of a multi-part RAR archive, requiring all numbered files to be present in the same directory for extraction. To successfully rebuild the file, use extraction software like WinRAR or 7-Zip on the first file in the sequence, which automatically processes the remaining parts. Learn more about managing multi-part archives at RAR - Apps on Google Play . RAR - Apps on Google Play