Question [Q] Install Gummycharged from FP1?

I got my Charge during its EP4 days and never got a chance to try out the Gummycharged ROM. (I need a change of scenery) Is there any way to flash this while on FP1? Will it brick my phone? I was looking on the rootzwiki forums on how to install Gummycharged 2.1 and it says to go to stock EP1W before flashing. LMK if there is a possible downgrade.