they only way you can get itouch theme is by jailbreaking.
Jailbreaking is the only legel thing you can do to your iTouch. Depending on your software information the ways can very.
Pros: There are many features in the applications given after you jailbreak your iTouch, and it lets you change more settings that aren't available without jailbreaking your iPod. Cons: It may crash your itouch, but you should be able to restore the iTouch in iTunes to it's original settings, by clicking the button that says "Restore to factory Settings" in itunes while your itouch is connected. Hope i helped.
An ipod's Hard drive/flash memory is fixed.
I would rather choose the iPod Touch considering that you can do more with an iTouch than an PSP. You can also consider jailbreaking your Itouch allowing you to get those paid apps for free. But I do not advise it, as it will void the warranty of the iTouch.
no it was takin to court and proven that jailbreaking is legal however the installing of cracked apps on the device is illegal
Make sure that you are using the correct jailbreaking tool for your iOS version. For example, if you have the iTouch 5th generation, with iOS 8.1.2, you would need to use TaiG to jailbreak.
No, to jailbreak your iPod Touch, simply download the application you wish to use and follow the prompts on screen. Although it is suggested to maintain a backup, it is normally not necessary and the jailbreaking process is normally harmless to your phone. All user data is kept throughout the jailbreaking process.
Of course, downloading the wrong things to it that aren't compatible or not understanding before jailbreaking can brick your iDevice. Hopefully DFU mode and restore can get it out.
If it is an iTouch, iPod, etc, you cannot take it to an Apple store to get fixed, updated, etc. as they do not accept jailbroken devices.
The pros : you can tweak it, get themes, get games The cons : Something can go wrong, and your warranty is voided. But it can all be avoided if you follow the instructions .
By using connecting your iPhone/iPod to your computer and running some software. A process to use non-propietary software on the iPhone/iPod.