Este es el error que me aparece siendo hboot 1.56 :
updating partition details...
full selinux support is present.
installing´ /sdcard/update.zip...
checking for md5 file...
skipping md5 check: no md5 file found.
verifying zip signature...
e:zip signature verficationfailed: 1
error flashing zip ´ /sdcard/update.zip´
updating partition details...