rlinfati@virtu:~/Downloads$ strings rootfs.jffs2 | grep \/opt\/
/opt/lib/libQtMessaging.so.1.0.21
/opt/lib/libtelepathy-qt4.so.0.0.0
/opt/lib/libconninet.so.0.0.0
/opt/lib/libQtScriptTools.so.4.7.0
/opt/lib/qt4/plugins/sensors/libqtsensors_n900.so
/opt/lib/qt4/plugins/sensors/libqtsensors_generic.so
/opt/lib/qt4/plugins/playlistformats/libqtmultimediakit_m3u.so
/opt/lib/qt4/plugins/contacts/libqtcontacts_maemo5.so
/opt/lib/qt4/plugins/mediaservice/libqgstengine.so
/opt/lib/qt4/plugins/mediaservice/libqtmedia_v4lengine.so
/opt/lib/libQtGui.so.4.7.0
/opt/lib/libQtXmlPatterns.so.4.7.0
/opt/lib/libQtBearer.so.1.0.2
/opt/lib/libconnsettings.so.0.0.0
/opt/lib/libQtSensors.so.1.0.2
/opt/lib/libQtServiceFramework.so.1.0.2
/opt/lib/libQtPublishSubscribe.so.1.0.2
/opt/lib/libQtSystemInfo.so.1.0.2
/opt/lib/libQtDeclarative.so.4.7.0
/opt/lib/libgq-gconf.so.0.0.0
/opt/lib/libtpsession.so.0.1.0
/opt/lib/libQtWebKit.so.4.7.0
/opt/lib/libQtVersit.so.1.0.2
/opt/lib/libQtScript.so.4.7.0
/opt/lib/libQtMultimediaKit.so.1.0.2
/opt/lib/libQtContacts.so.1.0.2
/opt/lib/libQtLocation.so.1.0.2

rlinfati@virtu:~/Downloads$ strings rootfs.jffs2 | grep -i 9\\.0\ r
9.0 r277l