Your postinst still doesn't work
~ # dpkg -i /home/user/MyDocs/apps/ios7theme_0.0.2_armel.deb Aegis Warning: /home/user/MyDocs/apps/ios7theme_0.0.2_armel.deb uses upper case letters in package name 'iOS7theme' -- converting lowercase Selecting previously deselected package ios7theme. (Reading database ... 58912 files and directories currently installed.) Unpacking ios7theme (from .../apps/ios7theme_0.0.2_armel.deb) ... Setting up ios7theme (0.0.2) ... dpkg (subprocess): unable to execute installedpost-installation script (/var/lib/dpkg/info/ios7theme.postinst): Operation not permitted dpkg: error processing ios7theme (--install): subprocess installed post-installation scriptreturned error exit status 2 Errors were encountered while processing: ios7theme aegis-installing ios7theme (from '')