I tried to update from update manager and also from terminal using sudo apt-get update.
But all the time its showing some kind of errors and not updating properly. As for example, its showing:
andbzip2: Data integrity error when decompressing.
Input file = (stdin), output file = (stdout)
It is possible that the compressed file(s) have become corrupted.
You can use the -tvv option to test integrity of such files.
You can use the `bzip2recover' program to attempt to recover
data from undamaged sections of corrupted files.
these errors when I tried from apt-get update. Any idea how to fix these?W: Failed to fetch http://archive.canonical.com/ubuntu/...amd64/Packages 404 Not Found [IP: 22.214.171.124 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
Software manager showing its 13days since the package information was last updated.
Any kind of help will be appreciated.