hdx7 stuck in start logo

i'm using 13.3.2.4 and flowing this thread http://forum.xda-developers.com/kind...mages-t2991015
after installing safetrap 3.7.5, i used it to install the roll back zip, wipe all and reboot system but now it stucks in the grey kindle fire logo. what must i do now??? can i boot to safetrap again??