ciso software package provides Tool to convert Sony PSP iso to ciso, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install ciso
ciso is installed in your system.
Make ensure the ciso package were installed using the commands given below,
$ sudo dpkg-query -l | grep ciso *
You will get with ciso package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Utilities |
| Package | ciso |
| Version | 1.0.0-0ubuntu2 |
| Description | Tool to convert Sony PSP iso to ciso |
| Sub Section | Utils |