How to Jailbreak/Unlock Windows Phone 7.5

For all those who bought a new Windows phone 7.5 ( WP7) mobile and are enjoying its user-friendly and fluid UI but are irritated by some of the OS limitations and lack of apps compared to your buddy’s Android/iOS device,Jailbreaking could solve your problems to certain extent as you can gain access to homebrew apps and apply tweaks that would enhance the user experience.
Before we start the process let me first introduce you with different types of Unlocks available on WP7.
1. Full Unlock : Full Unlock involves flashing of Custom ROMs.You can have all the market apps and access to homebrew apps for free.Cotulla has released modified boot loaders for first generation Samsung and HTC Devices. In Full Unlock, Policies would be modified to allow running of native executables