devel-su likely doesn't exist on that device, as it is part of 'busybox-devel-su' package, which is installed with developer mode: ... Package: developer-mode Status: install ok installed Priority: extra Section: user/utilities Installed-Size: 84 Maintainer: Nokia <I_EXT_HARMATTAN_DEVELOPERS@nokia.com> Architecture: armel Version: 1.48+0m6 Depends: duicontrolpanel-devmodeapplet (>= 1.14), develsh (>= 1.17), develsh (<< 1.18), sdk-connectivity-tool, meego-terminal, openssh-client, openssh-server, gdbserver, aegis-developer-unknown-source-policy (>= 1.26), aegis-dev-mode, busybox-devel-su, less, simple-syslog-daemon | sysklogd | system-log-daemon Description: Developer Mode ... Can you try to fetch the logs with file manager?