Not hard to install at all, just put it on your sdcard and flash in Recovery.
Yes. This was not originally for Froyo I have to remove some /libs.
I made it work for the Sidekick 4G.
Credits to Master&Slave for pulling the Modem from the device.
-My speeds have increased and I always have 3/4 full bars no lower and always 4G.
Just Hit the thanks button...
It will save a lot of you from getting infractions/warnings