About a month or so ago, XDA Forum Member biktor_gj posted an entire unlock and NAND access method for the Nokia Lumia 800 and 710 series of devices, which are the next of kin in Nokia’s entry into the world of smartphones (being hand held by Microsoft themselves). The complete unlock was accomplished thanks to the collaboration of several devs including XDA Recognized Developer ultrashot. Well, the best thing about having our devices completely unlocked is that it allows them to receive and accept unsigned code such as—oh, I don’t know—custom ROMs!
Thanks to the hard work by XDA Forum Member vova1609, we now have the very first custom Mango ROM for the device. For those of you who have never laid a finger on a WP device, they are locked down beyond all reasonable comprehension, and as such you are very limited in what you can do with it and to it. This custom ROM will allow you to do things such as install XAPs directly from Internet Explorer (for easier side loading than PC-tethered solutions), use various available fixes such as DFT’s Bluetooth file transfer and much more.
As it is the case with most custom work, particularly so on Windows Phone, there is always the chance of bricking the device, so make sure that you have a backup of your device in Zune in case of emergencies, and make sure that you follow the OP’s instructions completely to avoid problems. Please leave some feedback if you do run into bugs.
You can install XAP from Internet Explorer
Bazaar has already installed
Bluetooth File Transfer by DFT has already installed