Whenever I try to open Cydia, it shows a black screen for a few seconds, then goes back to the home screen. Is there any way to uninstall it or get it working?
Here are the methods that worked for me a while back. Taken from another thread.
Method #1: SSH into the phone and type "rm /var/lib/dpkg/updates/*" (without quotes) and hit enter.
Method #2: Open MobileTerminal on the phone and type "rm /var/lib/dpkg/updates/*" (without quotes) and hit enter.
or Method #3: Use the apps iFile or Discover from Cydia to browse to /var/lib/dpkg/updates/ and swipe the files then select delete, or in iFile select edit, check all the files, then tap the trash can at the bottom.