ios 4 powder nvram fix - thanks to testingthings (@throwaway167074) for the fix impl

activate_exploit.c

#include <stdlib.h>

int main() {
system("nvram -c");
system("nvram boot-partition=2");
system("nvram auto-boot=1");
//system("nvram auto-boot=0"); // for 4.2.x and lower, to send device to recovery after restore
system("umount /mnt1");
system("mount_hfs /dev/disk0s1 /mnt1");
system("dd if=/iBoot of=/mnt1/iBEC bs=512k");
system("/sbin/reboot__");
}