2.1_88 vs 2.0.1_88 and help identify unit

[xenoyosh]

I hope someone can help me. I have been reading on the forums for a while and i notice that there are some that would refer to 2.1_88
while others would refer to a 2.0.1_88 (like this thread)

I just want to ask if its the same thing? hoping to identify my unit and find out which i can use for it. I dont want another brick.

I would also like to ask if it would be safe to use other builds? like if i use something lower than what i have but is more stable. will that work?


btw i have pictures of my device and what i see on it.

I am not sure how to identify this thing. its got green led. red charge. no vibrations. black slots for everything. the odd thing is its blue, but they told me that is just a cover style.

http://i110.photobucket.com/albums/n101/yosh_0318/20110128145611.jpg

http://i110.photobucket.com/albums/n101/yosh_0318/Xenoxpic483.jpg

http://i110.photobucket.com/albums/n101/yosh_0318/Xenoxpic481.jpg

http://i110.photobucket.com/albums/n101/yosh_0318/Xenoxpic479.jpg

http://i110.photobucket.com/albums/n101/yosh_0318/20110128145657.jpg

http://i110.photobucket.com/albums/n101/yosh_0318/20110128145624.jpg