I'm using dpkg (Cydia), and a package keeps saying that it's downloading 26.2 MB, and resuming at 166.0 kB. It is consistently failing to install properly. Is there a way to clear this "saved data" and start the download fresh again?
On Debian-based systems, apt-get downloads *.deb files under
/var/cache/apt/archives/ (dpkg does not download anything by itself, it only manages the packages locally).
Searching suggests, it's just a bit different on iOS, and the path is
/private/var/cache/apt/archives, partucularly, you probably want to remove