My Cydia app hasn’t been working lately. I’ve been getting the error “Cydia encountered a section with no package header”, then most of Cydia won’t work. I tried reinstalling Cydia but that didn’t work. After searching around, I found a fix that worked for me. You’ll need to have SSH installed, or use an app like Disk Aid, so you can see the file structure of your iPhone and delete some stuff.
Here’s where you need to go to delete the files. /private/var/lib/apt/lists/ Make sure you do not delete the folder “partial”! You can delete all the other files in that folder.
After doing this your Cydia should be back to working again. :)