I'm going to try and make this short so let's start.

For those that are thinking that updating to ios 7 beta 2 will brick your device it's all bullshit rumours, it won't it never happened with me when I tested ios 6 from the start of beta 1 to the good master version, I see it as this. Apple won't brick your device because having much more people updating to these betas allows apple to find much more bugs because more people are sending device diagnostics about the beta straight to apple, on the other hand apple is losing money for every 1 person bypassing the ios dev program apple lose $100 so I still reckon apple will continue to do this let others download betas etc and let them complain on the web about how Safari crashes all the time or it resprings often this all benefits apple .

So my word is update to beta 2 it won't brick your device and you will be finds updating to ios 8 betas in the future you've got nothing to worry about please get this information passed along so everyone knows thank you and happy beta testing